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Design and Performance Evaluation of Multilevel LDPC Codes  

Yu Yi (한려대학교 멀티미디어 정보통신공학과)
Jia Hou (전북대학교 전자정보공학부)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.15, no.1, 2004 , pp. 51-59 More about this Journal
Abstract
We design multilevel coding(MLC) with a semi bit-interleaved coded modulation(BICM) scheme based on low density parity check(LDPC) codes. Different from traditional designs, we joint the MLC and BICM together by using the Gray mapping, which can transmit the multimedia data over several equivalent channels with different code rates. To get a good performance from signal-to-noise ratio(SNR) very close to the capacity of the additive white Gaussian noise(AWGN) channel, random regular LDPC code and a simple semi-algebra LDPC(SA-LDPC) code are discussed in MLC with parallel independent decoding(PID). Finally, the numerical results demonstrate that the proposed scheme could achieve both power and bandwidth efficiency for multimedia communication system.
Keywords
Multilevel coding; BICM; LDPC; PID;
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