PROJECT TITLE :

Noisy Gradient Descent Bit-Flipping Decoder Based on Adjustment Factor for LDPC Codes - 2018

ABSTRACT:

As a category of bit-flipping (BF) decoder, the noisy gradient descent bit flipping (NGDBF) algorithm outperforms the initial GDBF and other BF algorithms. To increase the reliability of the inversion function, we tend to propose a modified NGDBF algorithm by introducing an adjustment factor on the syndrome. Moreover, for the multi-bit flipping, we present an adaptive inversion threshold that depends on the numbers of negative bipolar syndromes. The simulation results show that our proposed algorithm outperforms the NGDBF algorithm for both single-bit and multi-bit flipping schemes.