Title :
Energy efficiency of SISO algorithms for turbo-decoding message-passing LDPC decoders
Author :
Amador, Erick ; Rezard, Vincent ; Pacalet, Renaud
Author_Institution :
EURECOM, Sophia Antipolis, France
Abstract :
The decoding of LDPC codes using the turbo-decoding message-passing strategy is considered. This strategy can be used with different SISO message computation kernels. We analyze the suitability for VLSI implementation of various message computation algorithms in terms of implementation area, energy consumption and error-correcting performance. As one of the computation kernels, we introduce the recent Self-Corrected Min-Sum algorithm and show the advantages it brings from an energy efficiency perspective. We present comparisons among the studied kernels implemented in a 65nm CMOS process and use a test case from the codes defined in IEEE 802.11n to show differences in energy efficiency.
Keywords :
CMOS integrated circuits; VLSI; codecs; error correction codes; message passing; parity check codes; turbo codes; wireless LAN; CMOS process; IEEE 802.11n; SISO algorithms; VLSI implementation; energy consumption; energy efficiency; error-correcting performance; self-corrected min-sum algorithm; turbo-decoding message-passing LDPC decoders; Complexity theory; Computer architecture; Decoding; Energy consumption; Iterative decoding; Kernel;
Conference_Titel :
Very Large Scale Integration (VLSI-SoC), 2009 17th IFIP International Conference on
Conference_Location :
Florianopolis
Print_ISBN :
978-1-4577-0237-2
DOI :
10.1109/VLSISOC.2009.6041337
