Huang, Tao, Yang, Tao, Yuan, Jinghong, and Land, Ingmar (2013) Design of irregular repeat-accumulate coded physical-layer network coding for Gaussian two-way relay channels. IEEE Transactions on Communications, 61 (3). pp. 897-909.

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Abstract

This paper addresses the design of irregular repeat accumulate (IRA) codes for coded physical-layer network coding (PNC) for the binary-input Gaussian two-way relay channel, assuming perfect synchronization and equal received power at the relay. The design is based on a nontrivial extension of EXIT-chart based design. Specifically, we analyze the components of the IRA-PNC scheme and propose an approach to model the soft information exchanged between these components. Then, we develop upper and lower bounds on the extrinsic information transfer functions to characterize the iterative process of computing the network-coded information. Based on that, we construct optimized IRA codes to minimize the computation error at the relay. The optimized IRA-PNC has considerable performance improvement over the existing regular RA coded PNC. For a rate 3/4 code, as an example, we observed improvements of 2.6 dB, and the optimized IRA-PNC scheme is only about 1.7 dB away from the capacity upper bound of the Gaussian two-way relay channel.

Item ID:	59932
Item Type:	Article (Research - C1)
ISSN:	1558-0857
Keywords:	Two-way relay channel, physical-layer network coding, compute-and-forward, Repeat-Accumulate codes, convergence analysis, EXIT chart
Copyright Information:	© IEEE
Date Deposited:	07 Dec 2021 00:09
FoR Codes:	10 TECHNOLOGY > 1005 Communications Technologies > 100510 Wireless Communications @ 50% 10 TECHNOLOGY > 1005 Communications Technologies > 100504 Data Communications @ 50%
SEO Codes:	89 INFORMATION AND COMMUNICATION SERVICES > 8901 Communication Networks and Services > 890103 Mobile Data Networks and Services @ 50% 89 INFORMATION AND COMMUNICATION SERVICES > 8901 Communication Networks and Services > 890105 Satellite Communication Networks and Services @ 50%
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