2002-12-01
On implementation of min-sum algorithm for decoding low-density parity-check (LDPC) codes
Publication
Publication
Presented at the
GLOBECOM'02 - IEEE Global Telecommunications Conference (November 2002), Taipei
This paper is concerned with the implementation issues of the so-called min-sum algorithm (also referred to as max-sum or max-product) for the decoding of low-density parity-check (LDPC) codes. The effects of clipping threshold and the number of quantization bits on the performance of min-sum algorithm at short and intermediate block lengths are studied. It is shown that min-sum is robust against quantization effects, and in many cases, only four quantization bits suffices to obtain close to ideal performance. We also propose modifications to min-sum algorithm that improve the performance by a few tenths of a dB with just a small increase in decoding complexity.
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GLOBECOM'02 - IEEE Global Telecommunications Conference | |
Organisation | Department of Systems and Computer Engineering |
Zarkeshvari, F. (Farhad), & Banihashemi, A. (2002). On implementation of min-sum algorithm for decoding low-density parity-check (LDPC) codes. In Conference Record / IEEE Global Telecommunications Conference (pp. 1349–1353).
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