Performance Advantage of Non-binary LDPC Codes At High Code Rate under AWGN Channel

Author(s):  
Long Ma ◽  
Lin Wang ◽  
Jianwen Zhang
2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Chakir Aqil ◽  
Ismail Akharraz ◽  
Abdelaziz Ahaitouf

In this study, we propose a “New Reliability Ratio Weighted Bit Flipping” (NRRWBF) algorithm for Low-Density Parity-Check (LDPC) codes. This algorithm improves the “Reliability Ratio Weighted Bit Flipping” (RRWBF) algorithm by modifying the reliability ratio. It surpasses the RRWBF in performance, reaching a 0.6 dB coding gain at a Binary Error Rate (BER) of 10−4 over the Additive White Gaussian Noise (AWGN) channel, and presents a significant reduction in the decoding complexity. Furthermore, we improved NRRWBF using the sum of the syndromes as a criterion to avoid the infinite loop. This will enable the decoder to attain a more efficient and effective decoding performance.


2018 ◽  
Vol 7 (2.25) ◽  
pp. 167
Author(s):  
Krishnamoorthy N.R ◽  
Ramadevi R ◽  
Marshiana M ◽  
Sujatha Kumaran

Low Density Parity Check code is the more efficient technique to attain the minimal error rate in the underwater channel. To reduce the processing delay in the LDPC decoding, convolutional code with high code rate is used. The result showed that the BER of 10-4 can be obtained with Eb/No value of 20 for code rate of ½ and 12 for code rate of 1/8. It is also showed in result that the decoding time is reduced one-third for data size of 500 and one-tenth for the data size of 1500 bits.  


2014 ◽  
Vol 60 (12) ◽  
pp. 7416-7441 ◽  
Author(s):  
Brian K. Butler ◽  
Paul H. Siegel
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