Digital twin for O-RAN towards 6G

Article

Nguyen, H., Vien, Q. and Le, T. 2025. Digital twin for O-RAN towards 6G. IEEE Communications Magazine. 63 (3), pp. 174-181. https://doi.org/10.1109/MCOM.003.2400016
TypeArticle
TitleDigital twin for O-RAN towards 6G
AuthorsNguyen, H., Vien, Q. and Le, T.
Abstract

In future wireless systems of beyond 5G and 6G, addressing diverse applications with varying quality requirements is essential. Open Radio Access Network (O-RAN) architectures offer the potential for dynamic resource adaptation based on traffic demands. However, achieving real-time resource orchestration remains a challenge. Simultaneously, Digital Twin (DT) technology holds promise for testing and analysing complex systems, offering a unique platform for addressing dynamic operation and automation in O-RAN architectures. Yet, developing DTs for complex 5G/6G networks poses challenges, including data exchanges, ML model training data availability, network dynamics, processing power limitations, interdisciplinary collaboration needs, and a lack of standardized methodologies. This paper provides an overview of Open RAN architecture, trend and challenges, proposing the DT concepts for O-RAN with solution examples showcasing its integration into the framework.

KeywordsDigital Twin; O-RAN; 6G; DT-RAN; RIC
Sustainable Development Goals9 Industry, innovation and infrastructure
Middlesex University ThemeSustainability
Research GroupLondon Digital Twin Research Center
PublisherIEEE
JournalIEEE Communications Magazine
ISSN0163-6804
Electronic1558-1896
Publication dates
Online14 Oct 2024
PrintMar 2025
Publication process dates
Accepted13 Aug 2024
Deposited10 Oct 2024
Output statusPublished
Accepted author manuscript
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Open
Copyright Statement

© 2024 IEEE. For the purpose of open access a Creative Commons Attribution (CC BY) is applied to the Accepted Manuscript version.

Digital Object Identifier (DOI)https://doi.org/10.1109/MCOM.003.2400016
LanguageEnglish
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Thiruvasakan, L., Vien, Q., Loo, J. and Mapp, G. 2019. A QoS-based flow assignment for traffic engineering in software-defined networks. Barolli, L., Takizawa, M., Xhafa, F. and Enokido, T. (ed.) 33rd International Conference on Advanced Information Networking and Applications (AINA-2019). Matsue, Japan 27 - 29 Mar 2019 Springer. pp. 762-774 https://doi.org/10.1007/978-3-030-15032-7_64
Multi-path routing for mission critical applications in software-defined networks
Ramirez, R., Vien, Q., Trestian, R., Mostarda, L. and Shah, P. 2019. Multi-path routing for mission critical applications in software-defined networks. Duong, T. and Vo, N. (ed.) 14th EAI International Conferenceon Industrial Networks and Intelligent Systems, INISCOM 2018. Da Nang, Vietnam 27 - 28 Aug 2018 Springer. pp. 38-48 https://doi.org/10.1007/978-3-030-05873-9_4
Network design, modelling and performance evaluation
Vien, Q. 2018. Network design, modelling and performance evaluation. The Institution of Engineering and Technology (IET).
A physical layer network coding based modify-and-forward with opportunistic secure cooperative transmission protocol
Vien, Q., Le, T., Nguyen, H. and Le-Ngoc, T. 2018. A physical layer network coding based modify-and-forward with opportunistic secure cooperative transmission protocol. Mobile Networks and Applications. 24 (2), pp. 464-479. https://doi.org/10.1007/s11036-018-1157-1
Disaster management using D2D communication with power transfer and clustering techniques
Ali, K., Nguyen, H., Vien, Q., Shah, P. and Chu, Z. 2018. Disaster management using D2D communication with power transfer and clustering techniques. IEEE Access. 6, pp. 14643-14654. https://doi.org/10.1109/ACCESS.2018.2793532
An efficient constructive e-alignment for onsite-online learning
Vien, Q. and Shah, P. 2018. An efficient constructive e-alignment for onsite-online learning. International Journal of Continuing Engineering Education and Life-Long Learning. 28 (3-4), pp. 276-292. https://doi.org/10.1504/IJCEELL.2018.098073
On the impact of visible light communication for audio and video transmissions
Jesuthasan, F., Rohitkumar, H., Shah, P., Nguyen, H. and Trestian, R. 2018. On the impact of visible light communication for audio and video transmissions. 13th IEEE International Symposium on Broadband Multimedia Systems and Broadcasting. Valencia, Spain 06 - 08 Jun 2018 IEEE. pp. 1-6 https://doi.org/10.1109/BMSB.2018.8436852
A successive optimization approach to pilot design for multi-cell massive MIMO systems
Al-Salihi, H., Van Chien, T., Le, T. and Nakhai, M. 2018. A successive optimization approach to pilot design for multi-cell massive MIMO systems. IEEE Communications Letters. 22 (5), pp. 1086-1089. https://doi.org/10.1109/LCOMM.2018.2812891
Game theory-based resource allocation for secure WPCN multiantenna multicasting systems
Chu, Z., Nguyen, H. and Caire, G. 2018. Game theory-based resource allocation for secure WPCN multiantenna multicasting systems. IEEE Transactions on Information Forensics and Security. 13 (4), pp. 926-939. https://doi.org/10.1109/TIFS.2017.2774441
Differential spatial modulation for high-rate transmission systems
Nguyen, T., Tran, X., Le, M. and Nguyen, H. 2018. Differential spatial modulation for high-rate transmission systems. EURASIP Journal on Wireless Communications and Networking. 2018 (1). https://doi.org/10.1186/s13638-017-1013-1
An overview of 5G technologies
Tran, H., Phan, C. and Vien, Q. 2018. An overview of 5G technologies. in: Arya, K., Bhadoria, R. and Chaudhari, N. (ed.) Emerging Wireless Communication and Network Technologies: Principle, Paradigm and Performance Springer. pp. 59-80
A Stackelberg-game approach for disaster-recovery communications utilizing cooperative D2D
Chu, Z., Le, T., Nguyen, H., Nallanathan, A. and Karamanoglu, M. 2018. A Stackelberg-game approach for disaster-recovery communications utilizing cooperative D2D. IEEE Access. 6, pp. 10733-10742. https://doi.org/10.1109/ACCESS.2017.2766921
Secure wireless powered and cooperative jamming D2D communications
Chu, Z., Nguyen, H., Le, T., Karamanoglu, M., Ever, E. and Yazici, A. 2018. Secure wireless powered and cooperative jamming D2D communications. IEEE Transactions on Green Communications and Networking. 2 (1), pp. 1-13. https://doi.org/10.1109/TGCN.2017.2763826
Software defined networking for wireless sensor networks: a survey
Hassan, M., Vien, Q. and Aiash, M. 2017. Software defined networking for wireless sensor networks: a survey. Advances in Wireless Communications and Networks. 3 (2), pp. 10-22. https://doi.org/10.11648/j.awcn.20170302.11
Snort-based intrusion detection system for practical computer networks: implementation and comparative study
Karim, I. and Vien, Q. 2017. Snort-based intrusion detection system for practical computer networks: implementation and comparative study. LAP Lambert Academic Publishing.
Exploring a new proactive algorithm for resource management and its application to wireless mobile environments
Paranthaman, V., Kirsal, Y., Mapp, G., Shah, P. and Nguyen, H. 2017. Exploring a new proactive algorithm for resource management and its application to wireless mobile environments. 42nd Conference on Local Computer Networks (LCN). Singapore 09 - 12 Oct 2017 IEEE. pp. 539-542 https://doi.org/10.1109/LCN.2017.86
Building a prototype VANET testbed to explore communication dynamics in highly mobile environments
Paranthaman, V., Ghosh, A., Mapp, G., Iniovosa, V., Shah, P., Nguyen, H., Gemikonakli, O. and Rahman, S. 2017. Building a prototype VANET testbed to explore communication dynamics in highly mobile environments. Guo, S., Wei, G., Xiang, Y., Lin, X. and Lorenz, P. (ed.) International Conference on Testbeds and Research Infrastructures (TridentCom 2016). Hangzhou, china 14 - 15 Jun 2016 Springer. pp. 81-90 https://doi.org/10.1007/978-3-319-49580-4_8
Seamless key agreement framework for mobile-sink in IoT based cloud-centric secured public safety sensor networks
Al-Turjman, F., Ever, Y., Ever, E., Nguyen, H. and Deebak Bakkiam, D. 2017. Seamless key agreement framework for mobile-sink in IoT based cloud-centric secured public safety sensor networks. IEEE Access. 5, pp. 24617-24631. https://doi.org/10.1109/ACCESS.2017.2766090
On the optimisation of practical wireless indoor and outdoor microcells subject to QOS constraints
Omorinoye, A. and Vien, Q. 2017. On the optimisation of practical wireless indoor and outdoor microcells subject to QOS constraints. Applied Sciences. 7 (9). https://doi.org/10.3390/app7090948
UEFA-M: Utility-based energy efficient adaptive multimedia mechanism over LTE HetNet small cells
Trestian, R., Vien, Q., Shah, P. and Mapp, G. 2017. UEFA-M: Utility-based energy efficient adaptive multimedia mechanism over LTE HetNet small cells. 14th International Symposium on Wireless Communication Systems. Bologna, Italy​ 28 - 31 Aug 2017 IEEE. pp. 408-413 https://doi.org/10.1109/ISWCS.2017.8108149
Optimisation of relay placement in wireless butterfly networks
Vien, Q. 2017. Optimisation of relay placement in wireless butterfly networks. in: Yang, X. (ed.) Nature-Inspired Algorithms and Applied Optimization Springer International Publishing.
Robust chance-constrained optimization for power-efficient and secure SWIPT systems
Le, T., Vien, Q., Nguyen, H., Ng, D. and Schober, R. 2017. Robust chance-constrained optimization for power-efficient and secure SWIPT systems. IEEE Transactions on Green Communications and Networking. 1 (3), pp. 333-346. https://doi.org/10.1109/TGCN.2017.2706063
On the nanocommunications at THz band in graphene-enabled wireless network-on-chip
Vien, Q., Agyeman, M., Le, T. and Mak, T. 2017. On the nanocommunications at THz band in graphene-enabled wireless network-on-chip. Mathematical Problems in Engineering. 2017. https://doi.org/10.1155/2017/9768604
On the handover security key update and residence management in LTE networks
Vien, Q., Le, T., Yang, X. and Duong, T. 2017. On the handover security key update and residence management in LTE networks. IEEE Wireless Communications and Networking Conference (WCNC 2017). San Francisco, CA, USA 19 - 22 Mar 2017 IEEE. pp. 1-6 https://doi.org/10.1109/WCNC.2017.7925678
Opportunistic secure transmission for wireless relay networks with modify-and-forward protocol
Vien, Q., Le, T. and Duong, T. 2017. Opportunistic secure transmission for wireless relay networks with modify-and-forward protocol. 2017 IEEE International Conference on Communications (ICC). Paris, France 21 - 25 May 2017 IEEE. https://doi.org/10.1109/ICC.2017.7996655
Performance evaluation of NOMA under Wireless Downlink Cloud Radio Access networks environments
Vien, Q., Ogbonna, N., Nguyen, H., Trestian, R. and Shah, P. 2017. Performance evaluation of NOMA under Wireless Downlink Cloud Radio Access networks environments. in: Venkataraman, H. and Trestian, R. (ed.) 5G Radio Access Networks: Centralized RAN, Cloud-RAN and Virtualization of Small Cells CRC Press. pp. 67-84
Non-orthogonal multiple access schemes for next-generation 5G networks: a survey
Bhuvanasundaram, N., Nguyen, H., Trestian, R. and Vien, Q. 2017. Non-orthogonal multiple access schemes for next-generation 5G networks: a survey. in: 5G Radio Access Networks: Centralized RAN, Cloud-RAN and Virtualization of Small Cells CRC Press. pp. 51-66
An energy-efficient NOMA for small cells in heterogeneous CRAN under QoS constraints
Vien, Q., Le, T., Phan, C. and Agyeman, M. 2017. An energy-efficient NOMA for small cells in heterogeneous CRAN under QoS constraints. 23rd European Wireless Conference (EW2017). Dresden, Germany 17 - 19 May 2017 VDE. pp. 80-85
On the energy efficiency of NOMA for wireless backhaul in multi-tier heterogeneous CRAN
Tran, H., Truong, P., Phan, C. and Vien, Q. 2017. On the energy efficiency of NOMA for wireless backhaul in multi-tier heterogeneous CRAN. 2017 International Conference on Recent Advances on Signal Processing, Telecommunications & Computing (SigTelCom). Da Nang, Vietnam 09 - 11 Jan 2017 IEEE. pp. 229-234 https://doi.org/10.1109/SIGTELCOM.2017.7849827
A comparative experimental design and performance analysis of Snort-based Intrusion Detection System in practical computer networks
Karim, I., Vien, Q., Le, T. and Mapp, G. 2017. A comparative experimental design and performance analysis of Snort-based Intrusion Detection System in practical computer networks. Computers. 6 (1), pp. 1-15. https://doi.org/10.3390/computers6010006
A resilient 2-D waveguide communication fabric for hybrid wired-wireless NoC design
Agyeman, M., Vien, Q., Ahmadinia, A., Yakovlev, A., Tong, K. and Mak, T. 2017. A resilient 2-D waveguide communication fabric for hybrid wired-wireless NoC design. IEEE Transactions on Parallel and Distributed Systems. 28 (2), pp. 359-373. https://doi.org/10.1109/TPDS.2016.2575836
Towards connecting people, locations and real-world events in a cellular network
Trestian, R., Shah, P., Nguyen, H., Vien, Q., Gemikonakli, O. and Barn, B. 2017. Towards connecting people, locations and real-world events in a cellular network. Telematics and Informatics. 34 (1), pp. 244-271. https://doi.org/10.1016/j.tele.2016.05.006
Non-orthogonal multiple access schemes with partial relay selection
Lee, S., Da Costa, D., Vien, Q., Duong, T. and De Sousa Jr., R. 2017. Non-orthogonal multiple access schemes with partial relay selection. IET Communications. 11 (6), pp. 846-854. https://doi.org/10.1049/iet-com.2016.0836
Enhancing secrecy rate in cognitive radio networks via multilevel Stackelberg game
Al Talabani, A., Deng, Y., Nallanathan, A. and Nguyen, H. 2016. Enhancing secrecy rate in cognitive radio networks via multilevel Stackelberg game. IEEE Communications Letters. 20 (6), pp. 1112-1115. https://doi.org/10.1109/LCOMM.2016.2541658
Optimising energy efficiency of non-orthogonal multiple access for wireless backhaul in heterogeneous cloud radio access network
Vien, Q., Le, T., Barn, B. and Phan, C. 2016. Optimising energy efficiency of non-orthogonal multiple access for wireless backhaul in heterogeneous cloud radio access network. IET Communications. 10 (18), pp. 2516-2524. https://doi.org/10.1049/iet-com.2016.0247
Architecture for public safety network using D2D communication
Ali, K., Nguyen, H., Shah, P., Vien, Q. and Bhuvanasundaram, N. 2016. Architecture for public safety network using D2D communication. 2016 IEEE Wireless Communications and Networking Conference. Doha, Qatar 03 - 06 Apr 2016 IEEE. pp. 1-6 https://doi.org/10.1109/wcnc.2016.7564671
Beamforming in coexisting wireless systems with uncertain channel state information
Le, T., Navaie, K., Vien, Q. and Nguyen, H. 2016. Beamforming in coexisting wireless systems with uncertain channel state information. 2016 IEEE 84th Vehicular Technology Conference (VTC-Fall). Montreal, QC, Canada 18 - 21 Sep 2016 IEEE. pp. 1-5 https://doi.org/10.1109/VTCFall.2016.7880920
Robust optimization with probabilistic constraints for power-efficient and secure SWIPT
Le, T., Vien, Q., Nguyen, H., Ng, D. and Schober, R. 2016. Robust optimization with probabilistic constraints for power-efficient and secure SWIPT. 2016 IEEE Global Communications Conference (GLOBECOM). Washington, DC, USA 04 - 08 Dec 2016 IEEE. pp. 1-7 https://doi.org/10.1109/GLOCOM.2016.7842232
Architecture for public safety network using D2D communication [Workshop paper]
Ali, K., Nguyen, H., Shah, P., Vien, Q. and Bhuvanasundaram, N. 2016. Architecture for public safety network using D2D communication [Workshop paper]. 2016 IEEE Wireless Communications and Networking Conference Workshops (WCNCW). Doha, Qatar 03 - 06 Apr 2016 IEEE. pp. 206-211 https://doi.org/10.1109/WCNCW.2016.7552700
An efficient channel model for evaluating wireless NoC architectures
Agyeman, M., Vien, Q., Hill, G., Turner, S. and Mak, T. 2016. An efficient channel model for evaluating wireless NoC architectures. 7th Workshop on Applications for Multi-Core Architectures (WAMCA) . Los Angeles, California, USA 26 - 28 Oct 2016 IEEE. pp. 85-90 https://doi.org/10.1109/SBAC-PADW.2016.23
An analytical channel model for emerging wireless networks-on-chip
Agyeman, M., Vien, Q. and Mak, T. 2016. An analytical channel model for emerging wireless networks-on-chip. The 14th IEEE/IFIP International Conference on Embedded and Ubiquitous Computing (EUC 2016). Paris, France 24 - 26 Aug 2016 Institute of Electrical and Electronics Engineers (IEEE). pp. 9-15 https://doi.org/10.1109/CSE-EUC-DCABES.2016.155
Enhancing secrecy rate in cognitive radio networks via stackelberg game
Al Talabani, A., Deng, Y., Nallanathan, A. and Nguyen, H. 2016. Enhancing secrecy rate in cognitive radio networks via stackelberg game. IEEE Transactions on Communications. 64 (11), pp. 4764-4775. https://doi.org/10.1109/TCOMM.2016.2589931
A secure network coding based modify-and-forward scheme for cooperative wireless relay networks
Vien, Q., Le, T., Nguyen, H. and Phan, H. 2016. A secure network coding based modify-and-forward scheme for cooperative wireless relay networks. 2016 IEEE 83rd Vehicular Technology Conference (VTC Spring). Nanjing, China 15 - 18 May 2016 IEEE. pp. 1-5 https://doi.org/10.1109/VTCSpring.2016.7504104
Cooperative spectrum sensing with secondary user selection for cognitive radio networks over Nakagami-m fading channels
Vien, Q., Nguyen, H. and Nallanathan, A. 2016. Cooperative spectrum sensing with secondary user selection for cognitive radio networks over Nakagami-m fading channels. IET Communications. 10 (1), pp. 91-97. https://doi.org/10.1049/iet-com.2015.0461
A hybrid double-threshold based cooperative spectrum sensing over fading channels
Vien, Q., Nguyen, H., Trestian, R., Shah, P. and Gemikonakli, O. 2016. A hybrid double-threshold based cooperative spectrum sensing over fading channels. IEEE Transactions on Wireless Communications. 15 (3), pp. 1821-1834. https://doi.org/10.1109/TWC.2015.2496598
Chance constrained robust downlink beamforming in multicell networks
Nasseri, S., Nakhai, M. and Le, T. 2016. Chance constrained robust downlink beamforming in multicell networks. IEEE Transactions on Mobile Computing. 15 (11), pp. 2682-2691. https://doi.org/10.1109/TMC.2016.2516981
Performance analysis of cooperative spectrum sensing for cognitive wireless radio networks over Nakagami-m fading channels
Vien, Q., Nguyen, H., Trestian, R., Shah, P. and Gemikonakli, O. 2014. Performance analysis of cooperative spectrum sensing for cognitive wireless radio networks over Nakagami-m fading channels. in: 2014 IEEE 25th Annual International Symposium on Personal, Indoor, and Mobile Radio Communication (PIMRC) IEEE. pp. 738-742
Cooperative cognitive radio beamforming in the presence of location errors
Akhatar, A., Holland, O., Le, T., Nakhai, M. and Aghvami, H. 2011. Cooperative cognitive radio beamforming in the presence of location errors. IEEE Vehicular Technology Conference (VTC Spring). https://doi.org/10.1109/VETECS.2011.5956716
Cooperative multicell processing techniques for energy-efficient cellular wireless communications
Nakhai, M., Le, T., Akhtar, A. and Holland, O. 2012. Cooperative multicell processing techniques for energy-efficient cellular wireless communications. in: Green Radio Communication Networks Cambridge University Press (CUP). pp. 236-260
Interference management in cooperative multi-cell networks
Le, T. 2012. Interference management in cooperative multi-cell networks. PhD thesis King's College London
Towards connecting people, locations and real-world events in a cellular network [conference item]
Trestian, R., Shah, P., Nguyen, H., Vien, Q., Gemikonakli, O. and Barn, B. 2015. Towards connecting people, locations and real-world events in a cellular network [conference item]. The main conference on the scientific analysis of mobile phone datasets (NetMob), Orange D4D Challenge. MIT Media Lab, USA 07 - 10 Apr 2015
Enhancing throughput of cognitive radio system with multiple power levels for primary users
Khomejani, S., Nallanathan, A., Nguyen, H. and Aghvami, H. 2015. Enhancing throughput of cognitive radio system with multiple power levels for primary users. 2015 22nd International Conference on Telecommunications (ICT). Sydney, NSW, Australia 27 - 29 Apr 2015 https://doi.org/10.1109/ICT.2015.7124647
A novel chaos based cost function for power control of cognitive radio networks
Al Talabani, A., Nallanathan, A. and Nguyen, H. 2015. A novel chaos based cost function for power control of cognitive radio networks. IEEE Communications Letters. 19 (4), pp. 657-660. https://doi.org/10.1109/LCOMM.2014.2385068
Exploring Markov models for the allocation of resources for proactive handover in a mobile environment
Paranthaman, V.V., Mapp, G., Shah, P., Nguyen, H. and Ghosh, A. 2015. Exploring Markov models for the allocation of resources for proactive handover in a mobile environment. 40th Annual IEEE Conference on Local Computer Networks Conference Workshops (LCN Workshops). Clearwater Beach, FL, USA 26 - 29 Oct 2015 IEEE. pp. 855-861 https://doi.org/10.1109/LCNW.2015.7365938
An energy-efficient resource allocation for optimal downlink coverage in heterogeneous wireless cellular networks
Vien, Q., Le, T., Nguyen, H. and Karamanoglu, M. 2015. An energy-efficient resource allocation for optimal downlink coverage in heterogeneous wireless cellular networks. 2015 International Symposium on Wireless Communication Systems (ISWCS). Brussels, Belgium 25 - 28 Aug 2015 IEEE. pp. 156-160 https://doi.org/10.1109/ISWCS.2015.7454318
On the design of reliable hybrid wired-wireless network-on-chip architectures
Agyeman, M., Wan, J., Vien, Q., Zong, W., Yakovlev, A., Tong, K. and Mak, T. 2015. On the design of reliable hybrid wired-wireless network-on-chip architectures. 2015 IEEE 9th International Symposium on Embedded Multicore/Many-core Systems-on-Chip. Turin, Italy 23 - 25 Sep 2015 IEEE. pp. 251-258 https://doi.org/10.1109/MCSoC.2015.11
Cross-layer topology design for network coding based wireless multicasting
Vien, Q., Tu, W., Nguyen, H. and Trestian, R. 2015. Cross-layer topology design for network coding based wireless multicasting. Computer Networks. 88, pp. 27-39. https://doi.org/10.1016/j.comnet.2015.06.005
Secure information transmission in the presence of energy-harvesting eavesdroppers in multi-cell networks
Le, T., Nguyen, H., Vien, Q. and Karamanoglu, M. 2015. Secure information transmission in the presence of energy-harvesting eavesdroppers in multi-cell networks. GLOBECOM 2015 - 2015 IEEE Global Communications Conference. San Diego, CA, USA 06 - 10 Dec 2015 IEEE. pp. 1-6 https://doi.org/10.1109/GLOCOM.2015.7417336
A robust transmission strategy for multi-cell interference networks
Le, T., Nakhai, M. and Navaie, K. 2015. A robust transmission strategy for multi-cell interference networks. 2015 IEEE Global Communications Conference (GLOBECOM). San Diego, CA, USA 06 - 10 Dec 2015 Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/GLOCOM.2015.7417142
Sum-rate analysis of cell edge users under cooperative NOMA
Bhuvanasundaram, N., Nguyen, H., Trestian, R. and Vien, Q. 2015. Sum-rate analysis of cell edge users under cooperative NOMA. 8th IFIP Wireless and Mobile Networking Conference (WMNC). Munich, Germany 05 - 07 Oct 2015 IEEE. pp. 239-244 https://doi.org/10.1109/WMNC.2015.19
Exploring energy consumption issues for multimedia streaming in LTE HetNet Small Cells
Trestian, R., Vien, Q., Shah, P. and Mapp, G. 2015. Exploring energy consumption issues for multimedia streaming in LTE HetNet Small Cells. 2015 IEEE 40th Conference on Local Computer Networks (LCN 2015). Clearwater Beach, Florida, USA 26 - 29 Oct 2015 IEEE. pp. 498-501 https://doi.org/10.1109/LCN.2015.7366362
On the coverage and power allocation for downlink in heterogeneous wireless cellular networks
Vien, Q., Akinbote, T., Nguyen, H., Trestian, R. and Gemikonakli, O. 2015. On the coverage and power allocation for downlink in heterogeneous wireless cellular networks. IEEE International Conference on Communications (ICC 2015). London, UK 08 - 12 Jun 2015 IEEE. pp. 4641-4646 https://doi.org/10.1109/ICC.2015.7249055
Power allocation for HARQ-IR systems under QoS constraints and limited feedback
To, D., Nguyen, H., Vien, Q. and Huang, L. 2015. Power allocation for HARQ-IR systems under QoS constraints and limited feedback. IEEE Transactions on Wireless Communications. 14 (3), pp. 1581-1594. https://doi.org/10.1109/TWC.2014.2370049
Disaster management communication networks: challenges and architecture design
Ali, K., Nguyen, H., Vien, Q. and Shah, P. 2015. Disaster management communication networks: challenges and architecture design. 2015 IEEE International Conference on Pervasive Computing and Communication Workshops (PerCom Workshops 2015). St. Louis, Missouri, USA 23 - 27 Mar 2015 IEEE. pp. 537-542 https://doi.org/10.1109/PERCOMW.2015.7134094
Non-orthogonal multiple access for wireless downlink in cloud radio access networks
Vien, Q., Ogbonna, N., Nguyen, H., Trestian, R. and Shah, P. 2015. Non-orthogonal multiple access for wireless downlink in cloud radio access networks. 21th European Wireless Conference. Budapest, Hungary 20 - 22 May 2015 VDE. pp. 434-439
Secure information transmission and power transfer in cellular networks
Le, T., Nguyen, H., Vien, Q. and Karamanoglu, M. 2015. Secure information transmission and power transfer in cellular networks. IEEE Communications Letters. 19 (9), pp. 1532-1535. https://doi.org/10.1109/LCOMM.2015.2454514
Double-threshold based cooperative spectrum sensing over imperfect channels
Vien, Q., Nguyen, H., Tran, L. and Hong, E. 2015. Double-threshold based cooperative spectrum sensing over imperfect channels. 2015 IEEE Wireless Communications and Networking Conference (WCNC 2015). Orleans, LA, USA 09 - 12 Mar 2015 IEEE. pp. 293-298 https://doi.org/10.1109/WCNC.2015.7127485
Symbol timing offset mitigation in OFDMA-based CoMP utilizing position aware transmission
Le, T., Gherkar, T., Nakhai, M. and Navaie, K. 2015. Symbol timing offset mitigation in OFDMA-based CoMP utilizing position aware transmission. IEEE 81st Vehicular Technology Conference (VTC Spring). Glasgow, Scotland 11 - 14 May 2015 IEEE. https://doi.org/10.1109/VTCSpring.2015.7146118
On the interference tolerance of the primary system in cognitive radio networks
Le, T. and Navaie, K. 2015. On the interference tolerance of the primary system in cognitive radio networks. IEEE Wireless Communications Letters. 4 (3), pp. 281-284. https://doi.org/10.1109/LWC.2015.2409266
On the energy-delay tradeoff and relay positioning of wireless butterfly networks
Vien, Q., Nguyen, H., Stewart, B., Choi, J. and Tu, W. 2015. On the energy-delay tradeoff and relay positioning of wireless butterfly networks. IEEE Transactions on Vehicular Technology. 64 (1), pp. 159-172. https://doi.org/10.1109/TVT.2014.2321229
Enhancing physical layer security of cognitive radio transceiver via chaotic OFDM
Al Talabani, A., Nallanathan, A. and Nguyen, H. 2015. Enhancing physical layer security of cognitive radio transceiver via chaotic OFDM. IEEE International Conference on Communications (ICC 2015). London, UK 08 - 12 Jun 2015 IEEE. pp. 4805-4810 https://doi.org/10.1109/ICC.2015.7249083
On the impact of video content type on the mobile video quality assessment and energy consumption
Trestian, R., Vien, Q., Nguyen, H. and Gemikonakli, O. 2015. On the impact of video content type on the mobile video quality assessment and energy consumption. 10th IEEE International Symposium on Broadband Multimedia Systems and Broadcasting. Ghent, Belgium 17 - 19 Jun 2015 https://doi.org/10.1109/BMSB.2015.7177206
ECO-M: energy-efficient cluster-oriented multimedia delivery in a LTE D2D environment
Trestian, R., Vien, Q., Nguyen, H. and Gemikonakli, O. 2015. ECO-M: energy-efficient cluster-oriented multimedia delivery in a LTE D2D environment. IEEE International Conference on Communications (ICC 2015). London, UK 08 - 12 Jun 2015 IEEE. pp. 55-61 https://doi.org/10.1109/ICC.2015.7248298
On the perspective transformation for efficient relay placement in wireless multicast networks
Vien, Q., Nguyen, H., Barn, B. and Tran, X. 2015. On the perspective transformation for efficient relay placement in wireless multicast networks. IEEE Communications Letters. 19 (2), pp. 275-278. https://doi.org/10.1109/LCOMM.2014.2387163
Design of distributed space-time block code for two-hop cooperative wireless relay networks over frequency selective fading channels
Vien, Q., Tran, L., Kim, J., Hong, E. and Park, Y. 2008. Design of distributed space-time block code for two-hop cooperative wireless relay networks over frequency selective fading channels. Korea Information and Communications Society. 2008 (11), pp. 282-285.
Cross-layer optimisation for topology design of wireless multicast networks via network coding
Vien, Q., Tu, W., Nguyen, H. and Trestian, R. 2014. Cross-layer optimisation for topology design of wireless multicast networks via network coding. 39th Annual IEEE Conference on Local Computer Networks. https://doi.org/10.1109/LCN.2014.6925818
Performance analysis of cooperative spectrum sensing for cognitive wireless radio networks over Nakagami-m fading channels
Vien, Q., Nguyen, H., Trestian, R., Shah, P. and Gemikonakli, O. 2014. Performance analysis of cooperative spectrum sensing for cognitive wireless radio networks over Nakagami-m fading channels. 2014 IEEE 25th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC). Washington DC, DC, USA 02 - 05 Sep 2014 IEEE. pp. 738-742 https://doi.org/10.1109/PIMRC.2014.7136262
Distributed space-time-frequency block code for cognitive wireless relay networks
Vien, Q., Stewart, B., Nguyen, H. and Gemikonakli, O. 2014. Distributed space-time-frequency block code for cognitive wireless relay networks. IET Communications. 8 (5), pp. 754-766. https://doi.org/10.1049/iet-com.2013.0374
Cross-layer optimisation for topology design of wireless multicast networks via network coding
Vien, Q., Tu, W., Nguyen, H. and Trestian, R. 2014. Cross-layer optimisation for topology design of wireless multicast networks via network coding. 39th IEEE Conference on Local Computer Networks (LCN). Edmonton, Canada 08 - 11 Sep 2014 IEEE. pp. 466-469 https://doi.org/10.1109/LCN.2014.6925818
Downlink beamforming design for cognitive cellular systems
Le, T. and Navaie, K. 2014. Downlink beamforming design for cognitive cellular systems. 2014 IEEE Wireless Communications and Networking Conference (WCNC). Istanbul, Turkey 06 - 09 Apr 2014 IEEE. pp. 1188-1193 https://doi.org/10.1109/WCNC.2014.6952318
Downlink beamforming in underlay cognitive cellular networks
Le, T. and Navaie, K. 2014. Downlink beamforming in underlay cognitive cellular networks. IEEE Transactions on Communications. 62 (7), pp. 2212-2223. https://doi.org/10.1109/TCOMM.2014.2323051
Fundamental performance trade-offs in coexisting wireless networks
Navaie, K. and Le, T. 2014. Fundamental performance trade-offs in coexisting wireless networks. 1st International Conference on 5G for Ubiquitous Connectivity. Finland 26 - 27 Nov 2014 IEEE. pp. 246-251 https://doi.org/10.4108/icst.5gu.2014.258069
Resource allocation for HARQ-IR systems with QoS constraints and limited feedback
To, D., Nguyen, H., Vien, Q. and Huang, L. 2014. Resource allocation for HARQ-IR systems with QoS constraints and limited feedback. 2014 IEEE Global Communications Conference. Austin, TX, USA 08 - 12 Dec 2014 IEEE. pp. 4226-4231 https://doi.org/10.1109/GLOCOM.2014.7037471
An efficient hybrid double-threshold based energy detection for cooperative spectrum sensing
Vien, Q., Nguyen, H. and Le-Ngoc, T. 2014. An efficient hybrid double-threshold based energy detection for cooperative spectrum sensing. 27th Biennial Symposium on Communications (QBSC). Kingston, ON, Canada 01 - 04 Jun 2014 IEEE. pp. 42-46 https://doi.org/10.1109/QBSC.2014.6841181
Relay selection for efficient HARQ-IR protocols in relay-assisted multisource multicast networks
Vien, Q., Nguyen, H., Shah, P., Ever, E. and To, D. 2014. Relay selection for efficient HARQ-IR protocols in relay-assisted multisource multicast networks. IEEE 79th Vehicular Technology Conference: VTC2014-Spring. Seoul, Korea (South) 18 - 21 May 2014 IEEE. pp. 1-5 https://doi.org/10.1109/VTCSpring.2014.7023073
An efficient cooperative spectrum sensing under bandwidth constraint with user selection
Vien, Q., Nguyen, H., Gemikonakli, O. and Barn, B. 2014. An efficient cooperative spectrum sensing under bandwidth constraint with user selection. 2014 IEEE 80th Vehicular Technology Conference (VTC2014-Fall). Vancouver, BC, Canada 14 - 17 Sep 2014 IEEE. pp. 1-5 https://doi.org/10.1109/VTCFall.2014.6965868
Network coding-based channel quality indicator reporting for two-way multi-relay networks
Vien, Q. and Nguyen, H. 2014. Network coding-based channel quality indicator reporting for two-way multi-relay networks. Wireless Communications and Mobile Computing. 14 (15), pp. 1471-1483. https://doi.org/10.1002/wcm.2296
Cooperative diversity techniques for high-throughput wireless relay networks
Vien, Q. 2013. Cooperative diversity techniques for high-throughput wireless relay networks. PhD thesis Glasgow Caledonian University
Design of distributed space-time block codes for relay networks
Vien, Q. 2009. Design of distributed space-time block codes for relay networks. Masters thesis Kyung Hee University
Design of DSTBC and HARQ schemes for turbo-coded cooperative wireless relay networks over frequency selective fading channels
Vien, Q., Nguyen, D., Tran, L. and Hong, E. 2009. Design of DSTBC and HARQ schemes for turbo-coded cooperative wireless relay networks over frequency selective fading channels. Proceedings International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC'09).
Distributed space-time block codes for relay networks: design for frequency-selective fading channels
Vien, Q. 2011. Distributed space-time block codes for relay networks: design for frequency-selective fading channels. LAP Lambert Academic Publishing.
Training sequence-based distributed space-time block codes with frequency domain equalization
Tran, L., Vien, Q. and Hong, E. 2009. Training sequence-based distributed space-time block codes with frequency domain equalization. in: Personal, Indoor and Mobile Radio Communications (PIMRC), IEEE International Symposium IEEE. pp. 501-505
Performance analysis of cooperative transmission for cognitive wireless relay networks
Vien, Q., Nguyen, H., Gemikonakli, O. and Barn, B. 2013. Performance analysis of cooperative transmission for cognitive wireless relay networks. 2013 IEEE Global Communications Conference (GLOBECOM). Atlanta, GA, USA 09 - 13 Dec 2013 IEEE. pp. 4186-4191 https://doi.org/10.1109/GLOCOM.2013.6831730
A power-efficient coverage scheme for cell-edge users using cognitive beamforming
Zarrebini-Esfahani, A., Le, T. and Nakhai, M. 2013. A power-efficient coverage scheme for cell-edge users using cognitive beamforming. IEEE 24th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC). London, UK 08 - 11 Sep 2013 IEEE. pp. 3028-3032 https://doi.org/10.1109/PIMRC.2013.6666666
Robust and power efficient interference management in downlink multi-cell networks
Nasseri, S., Le, T. and Nakhai, M. 2013. Robust and power efficient interference management in downlink multi-cell networks. IEEE 24th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC). London, UK 08 - 11 Sep 2013 IEEE. pp. 1097-1101 https://doi.org/10.1109/PIMRC.2013.6666302
Robust cognitive beamforming for cell-edge coverage in multicell networks with probabilistic constraints
Zarrebini-Esfahani, A., Le, T. and Nakhai, M. 2013. Robust cognitive beamforming for cell-edge coverage in multicell networks with probabilistic constraints. 2013 IEEE Global Communications Conference (GLOBECOM). Atlanta, GA, USA 09 - 13 Dec 2013 IEEE. pp. 1253-1258 https://doi.org//10.1109/GLOCOM.2013.6831246
Downlink optimization with interference pricing and statistical CSI
Le, T. and Nakhai, M. 2013. Downlink optimization with interference pricing and statistical CSI. IEEE Transactions on Communications. 61 (6), pp. 2339-2349. https://doi.org/10.1109/TCOMM.2013.042313.120343
Optimal relay positioning for green wireless network-coded butterfly networks
Vien, Q., Nguyen, H. and Tu, W. 2013. Optimal relay positioning for green wireless network-coded butterfly networks. IEEE 24th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC). London, UK 08 - 11 Sep 2013 IEEE. pp. 286-290 https://doi.org/10.1109/PIMRC.2013.6666147
Cooperative retransmission for wireless regenerative multirelay networks
Vien, Q., Stewart, B., Tianfield, H. and Nguyen, H. 2013. Cooperative retransmission for wireless regenerative multirelay networks. IEEE Transactions on Vehicular Technology. 62 (2), pp. 735-747. https://doi.org/10.1109/TVT.2012.2224393
On the energy efficiency of HARQ-IR protocols for wireless network-coded butterfly networks
Vien, Q., Stewart, B., Choi, J. and Nguyen, H. 2013. On the energy efficiency of HARQ-IR protocols for wireless network-coded butterfly networks. 2013 IEEE Wireless Communications and Networking Conference (WCNC). Shanghai, China 07 - 10 Apr 2013 IEEE. pp. 2559-2564 https://doi.org/10.1109/WCNC.2013.6554964
Efficient cooperative spectrum sensing for three-hop cognitive wireless relay networks
Vien, Q., Stewart, B., Tianfield, H. and Nguyen, H. 2013. Efficient cooperative spectrum sensing for three-hop cognitive wireless relay networks. IET Communications. 7 (2), pp. 119-127. https://doi.org/10.1049/iet-com.2012.0249
An efficient network coded ARQ for multisource multidestination relay networks over mixed flat fading channels
Vien, Q., Stewart, B., Tianfield, H., Nguyen, H. and Choi, J. 2013. An efficient network coded ARQ for multisource multidestination relay networks over mixed flat fading channels. AEÜ - International Journal of Electronics and Communications. 67 (4), pp. 282-288. https://doi.org/10.1016/j.aeue.2012.08.013
Outage probability of regenerative protocols for two-source two-destination networks
Vien, Q., Stewart, B. and Nguyen, H. 2013. Outage probability of regenerative protocols for two-source two-destination networks. Wireless Personal Communications. 69 (4), pp. 1969-1981. https://doi.org/10.1007/s11277-012-0673-8
Signal detection for 3GPP LTE downlink: algorithm and implementation.
Nguyen, H. 2011. Signal detection for 3GPP LTE downlink: algorithm and implementation. International Journal on Advances in Telecommunications. 4 (1 & 2), pp. 34-47.
Unique word-based distributed space-time block codes for two-hop wireless relay networks
Tran, L., Vien, Q. and Hong, E. 2012. Unique word-based distributed space-time block codes for two-hop wireless relay networks. IET Communications. 6 (7), pp. 715-723. https://doi.org/10.1049/iet-com.2010.0957
Coordinated beamforming using semidefinite programming
Le, T. and Nakhai, M. 2012. Coordinated beamforming using semidefinite programming. IEEE. pp. 3790 -3794 https://doi.org/10.1109/ICC.2012.6364232
A decentralized downlink beamforming algorithm for multicell processing
Le, T. and Nakhai, M. 2012. A decentralized downlink beamforming algorithm for multicell processing. IEEE Global Communications Conference (GLOBECOM 2012). Anaheim, CA, USA 03 - 07 Dec 2012 IEEE. pp. 3924-3929 https://doi.org/10.1109/GLOCOM.2012.6503729
An efficient cooperative retransmission for wireless regenerative relay networks
Vien, Q., Stewart, B., Tianfield, H. and Nguyen, H. 2012. An efficient cooperative retransmission for wireless regenerative relay networks. 2012 IEEE Global Communications Conference (GLOBECOM). Anaheim, CA, USA 03 - 07 Dec 2012 IEEE. pp. 4417-4422 https://doi.org/10.1109/GLOCOM.2012.6503813
Efficient cooperative spectrum sensing for cognitive wireless relay networks over Rayleigh flat fading channels
Vien, Q., Tianfield, H. and Stewart, B. 2012. Efficient cooperative spectrum sensing for cognitive wireless relay networks over Rayleigh flat fading channels. IEEE 75th Vehicular Technology Conference (VTC Spring). Yokohama, Japan 06 - 09 May 2012 IEEE. https://doi.org/10.1109/VETECS.2012.6240171
Network coding-based block acknowledgement scheme for wireless regenerative relay networks
Vien, Q., Nguyen, H., Choi, J., Stewart, B. and Tianfield, H. 2012. Network coding-based block acknowledgement scheme for wireless regenerative relay networks. IET Communications. 6 (16), pp. 2593-2601. https://doi.org/10.1049/iet-com.2011.0681
CQI reporting strategies for nonregenerative two-way relay networks
Vien, Q. and Nguyen, H. 2012. CQI reporting strategies for nonregenerative two-way relay networks. 2012 IEEE Wireless Communications and Networking Conference. Paris, France 01 - 04 Apr 2012 IEEE. pp. 974-979 https://doi.org/10.1109/WCNC.2012.6214516
Iterative OFDM receiver with channel estimation and frequency-offset compensation.
Nguyen, H., Choi, J. and Institute of Electrical and Electronics Engineers 2006. Iterative OFDM receiver with channel estimation and frequency-offset compensation. IEEE. https://doi.org/10.1109/ICC.2006.255362
Optimum performance model of ARQ protocol under adaptive modulation scheme.
Li, Y., Nguyen, H., Xing, W. and Institute of Electrical and Electronics Engineers 2008. Optimum performance model of ARQ protocol under adaptive modulation scheme. IEEE. pp. 225-229 https://doi.org/10.1109/ICC.2008.49
Layered groupwise STBC: list-based decoding using flexible length.
Nguyen, H., Choi, J. and Institute of Electrical and Electronics Engineers 2008. Layered groupwise STBC: list-based decoding using flexible length. IEEE. pp. 703-707 https://doi.org/10.1109/ISSSTA.2008.137
An efficient signal detection algorithm for 3GPP LTE downlink.
Nguyen, H. 2010. An efficient signal detection algorithm for 3GPP LTE downlink. Palelogu, C. (ed.) IEEE. pp. 77-81 https://doi.org/10.1109/ICDT.2010.22
Performance bounds for MMSE-based signal detection in LTE downlink
Nguyen, H. 2010. Performance bounds for MMSE-based signal detection in LTE downlink. IEEE.
Radio-over-fibre to increase effective coverage of motorway access networks.
Xing, W., Li, Y., Nguyen, H. and Zheng, J. 2009. Radio-over-fibre to increase effective coverage of motorway access networks. International Journal of Communication Networks and Distributed Systems. 2 (2/3), pp. 331-351. https://doi.org/10.1504/IJCNDS.2009.022338
Iterative (turbo processing) receiver design of OFDM systems in the presence of carrier frequency offset.
Nguyen, H., Choi, J. and Tianfield, H. 2010. Iterative (turbo processing) receiver design of OFDM systems in the presence of carrier frequency offset. International Transactions on Systems Science and Applications. 6 (1), pp. 82-93.
User position aware multicell beamforming for a distributed antenna system
Le, T. and Nakhai, M. 2011. User position aware multicell beamforming for a distributed antenna system. IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications. Toronto, ON, Canada 11 - 14 Sep 2011 IEEE. pp. 1423-1427 https://doi.org/10.1109/PIMRC.2011.6139736
An iterative algorithm for downlink multi-cell beam-forming
Le, T. and Nakhai, M. 2011. An iterative algorithm for downlink multi-cell beam-forming. 2011 IEEE Global Telecommunications Conference. Houston, TX, USA 05 - 09 Dec 2011 IEEE. pp. 1-6 https://doi.org/10.1109/GLOCOM.2011.6133913
Throughput analysis of network coding enabled wireless backhauls
Le, T. and Nakhai, M. 2011. Throughput analysis of network coding enabled wireless backhauls. IET Communications. 5 (10), pp. 1318-1327. https://doi.org/10.1049/iet-com.2010.0223
Green radio: radio techniques to enable energy-efficient wireless networks
Han, C., Harrold, T., Armour, S., Krikidis, I., Videv, S., Grant, P., Haas, H., Thompson, J., Ku, I., Wang, C., Le, T., Nakhai, M., Zhang, J. and Hanzo, L. 2011. Green radio: radio techniques to enable energy-efficient wireless networks. IEEE Communications Magazine. 49 (6), pp. 46-54. https://doi.org/10.1109/MCOM.2011.5783984
Power-efficient downlink transmission in multicell networks with limited wireless backhaul
Le, T., Nasseri, S., Zarrebini-Esfahani, A., Nakhai, M. and Mills, A. 2011. Power-efficient downlink transmission in multicell networks with limited wireless backhaul. IEEE Wireless Communications. 18 (5), pp. 82-88. https://doi.org/10.1109/MWC.2011.6056696
Network coding-based retransmission for relay aided multisource multicast networks
Vien, Q., Tran, L. and Hong, E. 2011. Network coding-based retransmission for relay aided multisource multicast networks. EURASIP Journal on Wireless Communications and Networking. 2011 (1). https://doi.org/10.1155/2011/643920
An efficient retransmission strategy for multi-source multi-destination relay networks over Rayleigh flat fading channels
Vien, Q., Tianfield, H., Stewart, B., Nguyen, H. and Choi, J. 2011. An efficient retransmission strategy for multi-source multi-destination relay networks over Rayleigh flat fading channels. The 14th International Symposium on Wireless Personal Multimedia Communications (WPMC'11). Brest, France 03 - 07 Oct 2011 IEEE.
Power allocation for multiband coded OFDM systems with limited feedback
To, D., Nguyen, H., Choi, J. and Choi, S. 2011. Power allocation for multiband coded OFDM systems with limited feedback. 2011 IEEE Vehicular Technology Conference (VTC Fall). San Francisco, US 05 - 08 Sep 2011 IEEE. pp. 1-5 https://doi.org/10.1109/VETECF.2011.6093066
Network coding-based block ACK for wireless relay networks
Vien, Q., Nguyen, H., Choi, J., Stewart, B. and Tianfield, H. 2011. Network coding-based block ACK for wireless relay networks. 2011 IEEE 73rd Vehicular Technology Conference (VTC Spring). Budapest, Hungary 15 - 18 May 2011 IEEE. https://doi.org/10.1109/VETECS.2011.5956413
Efficient ARQ retransmission schemes for two-way relay networks
Vien, Q., Tran, L. and Nguyen, H. 2011. Efficient ARQ retransmission schemes for two-way relay networks. Journal of Communications Software and Systems. 7 (1), pp. 9-15. https://doi.org/10.24138/jcomss.v7i1.182
Multi-group linear turbo equalization with intercell interference cancellation for MC-CDMA cellular systems.
Nguyen, H., Choi, J., Kim, S. and Nam, J. 2010. Multi-group linear turbo equalization with intercell interference cancellation for MC-CDMA cellular systems. Wireless Communications and Mobile Computing. 10 (8), pp. 1102-1112. https://doi.org/10.1002/wcm.825
Possible power-saving gains by dividing a cell into tiers of smaller cells
Le, T. and Nakhai, M. 2010. Possible power-saving gains by dividing a cell into tiers of smaller cells. Electronics Letters. 46 (16), pp. 1163-1165. https://doi.org/10.1049/el.2010.1509
Distributed space-time block code over mixed Rayleigh and Rician frequency-selective fading channels
Vien, Q., Tran, L. and Hong, E. 2010. Distributed space-time block code over mixed Rayleigh and Rician frequency-selective fading channels. EURASIP Journal on Wireless Communications and Networking. 2010 (1). https://doi.org/10.1155/2010/385872
Reactive service location in IEEE WAVE
Cruz, A., Boutaleb, T., Nguyen, H. and Tianfield, H. 2010. Reactive service location in IEEE WAVE. IEEE. pp. 534-540 https://doi.org/10.1109/WIMOB.2010.5645016
Network coding-based ARQ retransmission strategies for two-way wireless relay networks
Vien, Q., Tran, L. and Nguyen, H. 2010. Network coding-based ARQ retransmission strategies for two-way wireless relay networks. 18th International Conference on Software, Telecommunications and Computer Networks. Split, Croatia 23 - 25 Sep 2010 IEEE. pp. 180-184
Training sequence-based distributed space-time block codes with frequency domain equalization
Tran, L., Vien, Q. and Hong, E. 2009. Training sequence-based distributed space-time block codes with frequency domain equalization. 20th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications. Tokyo, Japan 13 - 16 Sep 2009 IEEE. pp. 501-505 https://doi.org/10.1109/PIMRC.2009.5449910
Design of quasi-orthogonal space-time block codes for cooperative wireless relay networks over frequency selective fading channels
Vien, Q. and Hong, E. 2009. Design of quasi-orthogonal space-time block codes for cooperative wireless relay networks over frequency selective fading channels. in: International Conference on Advanced Technologies for Communications, 2009. IEEE. pp. 275-278
Design of distributed space-time block code for two-relay system over frequency selective fading channels
Vien, Q., Tran, L. and Hong, E. 2009. Design of distributed space-time block code for two-relay system over frequency selective fading channels. 2009 IEEE Global Telecommunications Conference. Honolulu, HI, USA 30 Nov - 04 Dec 2009 IEEE. https://doi.org/10.1109/GLOCOM.2009.5426275
Low complexity SIC-based MIMO detection with list generation in the LR domain
Choi, J. and Nguyen, H. 2009. Low complexity SIC-based MIMO detection with list generation in the LR domain. 2009 IEEE Global Telecommunications Conference. Honolulu, HI, USA 30 Nov - 04 Dec 2009 IEEE. pp. 1-6 https://doi.org/10.1109/GLOCOM.2009.5425477
An efficient space-time coding scheme using list-based decoding
Nguyen, H. 2009. An efficient space-time coding scheme using list-based decoding. Ismail, M., Ali, B. and Hafizal, M. (ed.) 9th Malaysia International Conference on Communications. Kuala Lumpur, Malaysia 15 - 17 Dec 2009 IEEE. pp. 623-628 https://doi.org/10.1109/MICC.2009.5431554
SIC-based detection with list and lattice reduction for MIMO channels
Choi, J. and Nguyen, H. 2009. SIC-based detection with list and lattice reduction for MIMO channels. IEEE Transactions on Vehicular Technology. 58 (7), pp. 3786-3790. https://doi.org/10.1109/TVT.2009.2013472
High-rate groupwise STBC using low-complexity SIC based receiver
Nguyen, H., Choi, J. and Le-Ngoc, T. 2009. High-rate groupwise STBC using low-complexity SIC based receiver. IEEE Transactions on Wireless Communications. 8 (9), pp. 4677-4687. https://doi.org/10.1109/TWC.2009.081115
WiMAX fast-moving access network.
Xing, W., Nguyen, H. and Li, Y. 2008. WiMAX fast-moving access network. IEEE Wireless communication and networking conference (WCNC 2008). Las Vegas, NV, USA 31 Mar - 03 Apr 2008 IEEE. pp. 2663-2668 https://doi.org/10.1109/WCNC.2008.467
Joint design of groupwise STBC and SIC based receiver
Nguyen, H. and Choi, J. 2008. Joint design of groupwise STBC and SIC based receiver. IEEE Communications Letters. 12 (2), pp. 115-117. https://doi.org/10.1109/LCOMM.2008.071613
Iterative detection for MIMO-ISI channels using soft decision feedback
Nguyen, H. and Choi, J. 2007. Iterative detection for MIMO-ISI channels using soft decision feedback. 65th IEEE Vehicular Technology Conference - VCTC2007-Spring. Dublin, Ireland 22 - 25 Apr 2007 IEEE. pp. 2019-2022 https://doi.org/10.1109/VETECS.2007.418
Decision feedback detection for MIMO-ISI channels: design using fixed and adaptive constraints
Nguyen, H. and Choi, J. 2007. Decision feedback detection for MIMO-ISI channels: design using fixed and adaptive constraints. IEEE Transactions on Vehicular Technology. 56 (6), pp. 3931-3937. https://doi.org/10.1109/TVT.2007.901873
Iterative symbol-by-symbol decision feedback detection for MIMO-ISI channels
Nguyen, H. and Choi, J. 2006. Iterative symbol-by-symbol decision feedback detection for MIMO-ISI channels. APCCAS 2006: IEEE Asia Pacific Conference on Circuits and Systems. Singapore 04 - 07 Dec 2006 IEEE. pp. 139-142 https://doi.org/10.1109/APCCAS.2006.342333
Iterative channel estimation and turbo decoding in OFDM systems
Nguyen, H. and Choi, J. 2005. Iterative channel estimation and turbo decoding in OFDM systems. 62nd IEEE Vehicular Technology Conference -VTC-2005-Fall. Dallas, TX, USA 25 - 28 Sep 2005 IEEE. pp. 166-170 https://doi.org/10.1109/VETECF.2005.1557493
On the constrained MMSE decision feedback equalization for MIMO wireless systems
Nguyen, H. and Choi, J. 2005. On the constrained MMSE decision feedback equalization for MIMO wireless systems. 2005 Asia-Pacific Conference on Communications. Perth, WA, Australia 05 - 05 Oct 2005 IEEE. pp. 329-333 https://doi.org/10.1109/APCC.2005.1554074
Reduced-rank adaptive time-domain channel estimation for OFDM systems
Nguyen, H. and Choi, J. 2004. Reduced-rank adaptive time-domain channel estimation for OFDM systems. ICCS 2004: 9th International Conference on Communications Systems. Singapore 07 - 07 Sep 2004 IEEE. pp. 135-139 https://doi.org/10.1109/ICCS.2004.1359354