Digital Signal Processing and Artificial Intelligence for Automatic Learning Chakir Aqil, Abdelaziz Ahaitouf, Ismailc Akharraz 1 1 2022 https://doi.org/10.6025/dspaial/2022/1/1/28-36 https://www.dline.info/dspai/fulltext/v1n1/v1n1_3.pdf In this paper, a new algorithm called Reliability Ratio Weighted Bit Flipping–Sum Product (RRWBFSP) decoding is proposed for low-density parity-check codes. The new algorithm combines two different algorithms, Sum Product [4] and Reliability Ratio Weighted Bit Flipping [6]. The results of the simulation show that the new algorithm achieves a 0.34 dB performance gain over of the standard Sum- Product decoding algorithms. Furthermore, RRWBFSP algorithm has almost the same computational complexity compared to the standard Sum-Product algorithm.