Performance Analysis of Gray Code based Structured Regular Column-Weight Two LDPC Codes
Mrs. Vibha Kulkarni, K. Jaya Sankar · IOSR Journal of Electronics and Communication Engineering · 2016
The Low-Density Parity-Check (LDPC) code is a linear block code specified by a parity-check matrix H.The construction process of LDPC codes considers the parameters such as row weight, column weight, density of H-matrix, code rate, code length and girth.A novel flexible method for constructing structured regular LDPC codes considering all these parameters, using Gray-code representations, was reported in our earlier work.LDPC codes with column-weight two have low computational complexity and are promising for data storage and partial response channels.This paper presents the performance analysis of column-weight two LDPC codes constructed using the method proposed in our previous work.The BER performance of the obtained codes is comparable to that of the standard Gallager"s random codes and QC-LDPC codes.