【摘要】 低密度校验码(LDPC)由于其编码增益高、译码速度快、性能接近香农限的优点,目前得到学术界的广泛关注。文中简单介绍了LDPC码及其译码算法,在此基础上结合比特交织编码调制(BICM)系统,并在算法上作出了相应改进。仿真结果表明,在高斯信道、充分交织瑞利信道、相关瑞利衰落信道下,此算法正确有效。更多还原

【Abstract】 Low-density parity check (LDPC)codes have attracted great research interests because of their high code gain, relatively low decoding complexity and a good performance close to the Shannon limit for this channel. This paper introduces LDPC codes and their decoding algorithms and then proposes the LDPC-BICM scheme for transmission over AWGN and Rayleigh. Simulation results show that the scheme and algorithms are correct for the LDPC-BICM system.更多还原