A Study of Decoding Algorithm for LDPC Codes Based on High Order Modulation over AWGN Channel
Zhong Jing · Journal of Wuyi University · 2006
In this paper,first,the high order soft demodulation algorithms based on AWGN were introduced.Then the basic encoding and decoding principles of LDPC codes were studied,and the sum-product algorithms with its reduced complexity algorithms were presented based on high order soft demodulation.Simulation result shows that the coded-modulation algorithms can work reliably in high speed digital communication.