A Bit Flipping Viterbi Decoding Algorithm Based on CRC Check for Convolutional Code

Soft output Viterbi decoding (SOVA) algorithm, as maximum likelihood decoding, is a convolutional code decoding algorithm commonly used in communication systems. In order to further improve the decoding performance and reduce the bit error rate, a bit flipping Viterbi decoding algorithm based on cyc...

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Bibliographic Details
Published in:Proceedings (International Conference on Communication Technology. Online) pp. 1292 - 1295
Main Authors: Sun, Yaping, Dou, Gaoqi, Yin, Hang
Format: Conference Proceeding
Language:English
Published: IEEE 13.10.2021
Subjects:
AWGN channels
bit credibility
bit flip
Communication systems
Conferences
Convolutional codes
CRC check
Cyclic redundancy check
Simulation
soft decision Viterbi decoding
Viterbi algorithm
ISSN:2576-7828
Online Access:Get full text
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Summary:Soft output Viterbi decoding (SOVA) algorithm, as maximum likelihood decoding, is a convolutional code decoding algorithm commonly used in communication systems. In order to further improve the decoding performance and reduce the bit error rate, a bit flipping Viterbi decoding algorithm based on cyclic redundancy check (CRC) is proposed in this paper. In this paper, the concept of bit credibility is introduced, where CRC check is carried out after soft decision Viterbi decoding, and the credibility of bit information is utilized to flip the wrong bits, so as to improve the performance of frame error rate (FER). Simulation results show that the performance of the proposed algorithm is better than the SOVA algorithm and the SOVA algorithm based on CRC check with certain error-correcting ability.
ISSN:2576-7828
DOI:10.1109/ICCT52962.2021.9657864