Low-density parity-check codes and high spectral efficiency modulation

Low-density parity-check (LDPC) codes have been a focus in the research of error-correcting coding in recent years. Moreover, it may be desirable to combine these marvelous codes, which have exhibited an excellent performance, with spectral efficient modulations to improve the transmission capacity in bandwidth limited channels. In this paper we present a new coding and modulation scheme in this way, using LDPC codes, and in the bit-interleaved coded modulation (BICM) style. Several simulation results show that this scheme can provide a substantial coding gain both on Gaussian channels and Rayleigh channels.