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Optimized IR-HARQ Schemes Based on Punctured LDPC Codes Over the BEC.

Authors :
Andriyanova, Iryna
Soljanin, Emina
Source :
IEEE Transactions on Information Theory. Oct2012, Vol. 58 Issue 10, p6433-6445. 13p.
Publication Year :
2012

Abstract

We study incremental redundancy hybrid automatic repeat request (IR-HARQ) schemes based on punctured, finite-length, low-density, parity-check (LDPC) codes. The transmission is assumed to take place over time-varying binary erasure channels, such as mobile wireless channels at the application layer. We analyze and optimize the throughput and delay performance of these IR-HARQ protocols under iterative, message-passing decoding. We derive bounds on the performance that are achievable by such schemes, and show that, with a simple extension, the iteratively decoded, punctured LDPC code-based IR-HARQ protocol can be made rateless and operating close to the general theoretical optimum for a wide range of channel erasure rates. [ABSTRACT FROM PUBLISHER]

Details

Language :
English
ISSN :
00189448
Volume :
58
Issue :
10
Database :
Academic Search Index
Journal :
IEEE Transactions on Information Theory
Publication Type :
Academic Journal
Accession number :
82709328
Full Text :
https://doi.org/10.1109/TIT.2012.2203580