LDPC Code and Its Application in Spread Spectrum Communication

摘要

In this paper we present a general description of the low-density parity-check codes. The encoding and decoding principles are deeply discussed. At the same time we applied this coding scheme to the direct series spread spectrum communication system. The performance of the regular LDPC codes over AWGN channel is analyzed and simulated. Results make sure that LDPC codes can achieve a higher performance than convolutional codes.