Network coding-based channel quality indicator reporting for two-way multi-relay networks
Article
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
Type | Article |
---|---|
Title | Network coding-based channel quality indicator reporting for two-way multi-relay networks |
Authors | Vien, Q. and Nguyen, H. |
Abstract | This paper considers channel quality indicator (CQI) reporting for data exchange in a two-way multi-relay network. We first propose an efficient CQI reporting scheme based on network coding, where two terminals are allowed to simultaneously estimate the CQI of the distant terminal-relay link without suffering from additional overhead. In addition, the transmission time for CQI feedback at the relays is reduced by half while the increase in complexity and the loss of performance are negligible. This results in a system throughput improvement of 16.7% with our proposed CQI reporting. Upper and lower bounds of the mean square error (MSE) of the estimated CQI are derived to study performance behaviour of our proposed scheme. It is found that the MSE of the estimated CQI increases proportionally with the square of the cardinality of CQI level sets although an increased number of CQI levels would eventually lead to a higher data rate transmission. On the basis of the derived bounds, a low-complexity relay selection (RS) scheme is then proposed. Simulation results show that, in comparison with optimal methods, our suboptimal bound-based RS scheme achieves satisfactory performance while reducing the complexity at least three times in case of large number of relays. |
Keywords | two-way wireless relay networks; network coding; CQI reporting |
Research Group | SensoLab group |
Publisher | Wiley |
Journal | Wireless Communications and Mobile Computing |
ISSN | 1530-8669 |
Electronic | 1530-8677 |
Publication dates | |
Online | 18 Sep 2012 |
25 Oct 2014 | |
Publication process dates | |
Deposited | 08 Nov 2012 |
Accepted | 21 Aug 2012 |
Output status | Published |
Accepted author manuscript | |
Copyright Statement | Attached full text: This is the peer reviewed version of the following article: Vien Q.-T. and Nguyen H. X. (2014), Network coding-based channel quality indicator reporting for two-way multi-relay networks, Wireless Communications and Mobile Computing, 14, pages 1471–1483, doi: 10.1002/wcm.2296, which has been published in final form at http://dx.doi.org/10.1002/wcm.2296. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving(http://olabout.wiley.com/WileyCDA/Section/id-828039.html#terms). |
Digital Object Identifier (DOI) | https://doi.org/10.1002/wcm.2296 |
Web of Science identifier | WOS:000342317300003 |
Language | English |
https://repository.mdx.ac.uk/item/83w14
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