Comparison of a physical-layer network coding system with iterative coding schemes

Physical layer network coding (PNC) is a novel technique that allows two users to exchange messages in a wireless network. PNC takes place at a relay node and exploits the interference caused by incoming signals from the two users to increase throughput. In this paper, the performance of a two-way r...

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Bibliographic Details
Published in:2013 6th Joint IFIP Wireless and Mobile Networking Conference (WMNC) pp. 1 - 4
Main Authors: Al-Rubaie, Alaa A. S., Tsimenidis, C. C., Johnston, M., Sharif, B.
Format: Conference Proceeding
Language:English
Published: IEEE 01.04.2013
Subjects:
Bit Interleaved Coded Modulation with Iterative Decoding (BICM-ID)
Decoding
Iterative decoding
Low-Density Parity-Check (LDPC) code
Network coding
Physical-layer Network Coding (PNC)
Relays
Turbo Code
Turbo codes
ISBN:9781467356152, 1467356158
Online Access:Get full text
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Summary:Physical layer network coding (PNC) is a novel technique that allows two users to exchange messages in a wireless network. PNC takes place at a relay node and exploits the interference caused by incoming signals from the two users to increase throughput. In this paper, the performance of a two-way relay network employing PNC is evaluated with three types of error-correcting codes used at the source and destination nodes, namely low-density parity-check codes, turbo codes and bit-interleaved coded modulation with iterative decoding (BICM-ID). All three coding schemes perform similarly in a single user system on the AWGN channel with no relay, but results obtained when employing PNC show that although there is an overall degradation in their performance of all three codes, the LDPC code performance is more seriously affected due to the Sum-Product decoding algorithm being less robust to unreliable symbols broadcast from the relay.
ISBN:9781467356152
1467356158
DOI:10.1109/WMNC.2013.6549038