Low-complexity Soft-Decision Decoding Algorithm for BCH Code in BeiDou System

Authors

Guowei Qu, 1. Yantai Nanshan University, Yantai 265713, China;;
Songfeng Deng, 2. Aerospace Electronic Technology Research Institute, Shanghai 201109, China;

Abstract

Abstract: A low-complexity soft-decision decoding algorithm based on the re-encoding technique was proposed for the BCH(15,11) code in BeiDou satellite navigation system. Several candidate information sequences were constructed by the soft-decision vector and then re-encoded in the algorithm if the error in the hard-decision result was detected. The correlation between each codeword and the soft-decision vector was calculated, and the codeword with the maximum correlation value was selected as decoding output. Simulation results show that the presented algorithm outperforms traditional hard-decision decoding at the expense of moderate complexity increase. Moreover, the storage of error-correction ROM signal is avoided. Hence, the presented algorithm is a good choice for decoding in a practical navigation receiver.

Recommended Citation

Qu, Guowei and Deng, Songfeng (2020) "Low-complexity Soft-Decision Decoding Algorithm for BCH Code in BeiDou System," Journal of System Simulation: Vol. 28: Iss. 8, Article 12.
Available at: https://dc-china-simulation.researchcommons.org/journal/vol28/iss8/12

First Page

1790

Revised Date

2015-08-18

DOI Link

https://doi.org/

Last Page

1794

CLC

TN967.1

Recommended Citation

Qu Guowei, Deng Songfeng. Low-complexity Soft-Decision Decoding Algorithm for BCH Code in BeiDou System[J]. Journal of System Simulation, 2016, 28(8): 1790-1794.