Performance Simulation of LDPC Codes in AWGN Channel
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Resource Overview
Simulation of LDPC code performance in AWGN channel using MATLAB scripts: geth.m (H-matrix generation), getG.m (H-to-G matrix conversion), H2G.m (alternative conversion method), decode.m (encoding implementation), and BER.m (bit error rate calculation). This simulation follows traditional encoding schemes: generating H-matrix, converting to G-matrix, encoding data transmission through Gaussian channel, and evaluating BER performance.
Detailed Documentation
This paper presents a methodology for simulating LDPC code performance in AWGN channels. The simulation utilizes multiple MATLAB script files with specific functions: geth.m implements the generation of parity-check matrix (H-matrix) using standard construction algorithms; getG.m handles the conversion from H-matrix to generator matrix (G-matrix) through systematic form transformation; decode.m performs the actual encoding process using matrix multiplication between message vectors and G-matrix; and BER.m calculates the Bit Error Rate by comparing transmitted and received data. The simulation follows conventional encoding schemes where data is encoded after H-matrix generation and G-matrix conversion, then transmitted through Gaussian channels. The implementation evaluates LDPC code performance by generating BER performance curves under AWGN channel conditions, demonstrating the error-correction capability through statistical analysis of transmission results.
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