Performance and ExIT chart analysis of BICM-ID for physical layer network coding

Alaa A.S. Al-Rubaie, C. C. Tsimenidis, M. Johnston, B. Sharif

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Physical layer network coding (PNC) is a novel technique that allows two users to exchange messages in a wireless network. The most significant feature of PNC is the exploitation of interference at a relay due to incoming signals from two users, allowing an increase in throughput. In this paper, Extrinsic Information Transfer (ExIT) charts are employed to evaluate the performance of bit-interleaved coded modulation with iterative decoding (BICM-ID) combined with PNC. We address critical design issues to enhance decoding performance and provide analytical bounds on the performance. The analysis is extended for PNC employing Turbo and Low-Density Parity-Check (LDPC) codes to compare the performance with BICM-ID on the AWGN channel. Our results show that BICM-ID with PNC performs very similarly to a turbo-coded PNC scheme but, surprisingly, it outperforms a LDPC-coded PNC scheme, due to the Sum-Product decoding algorithm, which is less robust to unreliable symbols broadcast from the relay and needs more iterations to reach convergence. This shows that when considering trade-offs between performance and complexity, BICM-ID is an attractive coding scheme for wireless relay networks employing PNC.

Original languageBritish English
Title of host publication2013 IEEE 20th International Conference on Electronics, Circuits, and Systems, ICECS 2013
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages205-208
Number of pages4
ISBN (Print)9781479924523
DOIs
StatePublished - 2013
Event2013 IEEE 20th International Conference on Electronics, Circuits, and Systems, ICECS 2013 - Abu Dhabi, United Arab Emirates
Duration: 8 Dec 201311 Dec 2013

Publication series

NameProceedings of the IEEE International Conference on Electronics, Circuits, and Systems

Conference

Conference2013 IEEE 20th International Conference on Electronics, Circuits, and Systems, ICECS 2013
Country/TerritoryUnited Arab Emirates
CityAbu Dhabi
Period8/12/1311/12/13

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