Obiedat, Esam and Xiang, Wei and Leis, John W. and Cao, Lei (2010) Soft incremental redundancy for distributed turbo product codes. In: CCNC 2010: 7th IEEE Consumer Communications and Networking Conference, 9-12 Jan 2010, Las Vegas, NV. United States.
In this paper, we propose a Distributed Turbo Product Code (DTPC) with soft information relaying over cooperative network using block Extended Bose Chaudhuri Hochquenghem (EBCH) codes as component codes. The source broadcasts extended EBCH coded frames to the destination and to a preassigned relay. After soft-decoding the received sequences and obtaining the Log-Likelihood Ratio (LLR) values, the relay constructs a product code by arranging the decoded bit sequences in rows and re-encoding them along the columns using a novel soft block encoding technique to obtain soft parity bits with different reliabilities that can be used as soft Incremental Redundancy (IR) for source’s data which is forwarded to the destination. A modified turbo product decoder to cope with the data received over different channels and thus having different reliabilities is used at the destination. We compared the simulation results in Additive White Gaussian Noise (AWGN) channel using network scenarios with our previous work for Decode and Forward (DF) DTPC and with non-cooperative case. Results show 0.5dB gain improvement over the non-cooperative Turbo Product Codes (TPC) at Bit Error Rate (BER) 10^−4. In addition, the BER performance is less affected by the decoding errors at the relay.
|Item Type:||Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)|
|Additional Information:||Permanent restricted access to published version due to publisher's copyright restriction. Author version not held.|
|Uncontrolled Keywords:||additive white Gaussian noise channel; BER performance; component codes; cooperative networks; decode and forward; decoding errors; encoding techniques; gain improvement; incremental redundancy; log-likelihood ratios; network scenario; non-cooperative; parity bits; product code; re-encoding; simulation result; soft information; turbo product codes|
|Depositing User:||Dr Wei Xiang|
|Date Deposited:||09 Feb 2011 06:02|
|Last Modified:||03 Jul 2013 00:28|
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