H-ARQ-Aided Systematic Luby Transform Codes

Nguyen Dang, Thanh, Yee Siong, Ronald, Yang, Lie-Liang and Hanzo, Lajos (2008) H-ARQ-Aided Systematic Luby Transform Codes. IEEE Journal on Selected Areas in Communications


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Hybrid Automatic-Repeat-Request (H-ARQ) Aided Systematic Luby Transform (SLT) Coded Modulation is proposed, where SLT codes are used both for correcting erroneous bits and for detecting as well as retransmitting erroneous Internet Protocol (IP) based packets. Erroneous IP packet detection is implemented using syndrome checking with the aid of the SLT codes’ Parity Check Matrix (PCM). Optimizing the mapping of SLT-encoded bits to modulated symbols and then using iterative decoding for exchanging extrinsic information between the SLT decoder and the demapper substantially improves the achievable Bit Error Ratio (BER) performance of the scheme. Quantitatively, at Eb/N0 in excess of 3.8 dB, this scheme is capable of achieving a BER 10?5 and up to 1.5 times higher throughput in comparison to less sophisticated benchmarker schemes such as SLT codes, dispensing with ARQ-assistance or joint SLT coded modulation and H-ARQ-SLT codes, when communicating over AWGN channels, using 16-QAM and a half-rate SLT code.

Item Type: Article
Divisions : Faculty of Physical Sciences and Engineering > Electronics and Computer Science > Southampton Wireless Group
ePrint ID: 265829
Accepted Date and Publication Date:
April 2008Submitted
Date Deposited: 29 May 2008 19:53
Last Modified: 31 Mar 2016 14:11
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/265829

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