Method and system for decoding

Details Method and system for decoding Method and system for decoding

H - Electricity

03

M

H03M 13/31 (2006.01) H03M 13/29 (2006.01) H04L 1/22 (2006.01)

Patent

CA 2310186

Reduced complexity decoding algorithms for Low Density Parity Check codes are presented. The performance of these algorithms is optimized using the concept of density evolution and they are shown to perform well in practical decoding situations. The codes are examined from a performance vs. complexity point of view, and it is shown that there is an optimal complexity for practical decoders beyond which performance will suffer. The idea of practical decoding is used to develop the sum-transform-sum algorithm, which is very well suited for a fixed- point hardware implementation. The performance of this decoder approaches that of the sum-product decoder, but is much less complex.

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