Two adaptive coded modulation schemes are proposed for MLC (multilevel coding) system employing LDPC (low-density parity-check) codes as component code under slowly Rayleigh fading channels.

• 设计了两个以低密度校验(low densityparity check ；LDPC)码作分量码的自适应多级编码调制(multilevelcod ing ；MLC)系统；研究了其在Rayleigh衰落信道中的性能.