Multilevel LDPC Codes for Bandwidth Efficiency Communication Systems
نویسندگان
چکیده
We design multilevel coding (MLC) with a semi bitinterleaved 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 is suitable to transmit the data over several equivalent channels with different code rates. To perform well at 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 communication system. Keywords-Multilevel Coding; BICM; LDPC; PID
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