用于GSM系统的低复杂度ML检测的双层LDPC码

Two-Layer LDPC Codes for Low Complexity ML Detection in GSM System

为降低最大似然(maximum-likelihood,ML)检测在广义空间调制(generalized spatial modulation,GSM)系统中的复杂度,提出了双层低密度奇偶校验(two-layer low-density parity-check,TL-LDPC)码,并且对TL-LDPC编码的GSM系统和常规低密度奇偶校验(low-density parity-check,LDPC)编码的GSM系统分别做了仿真试验。结果表明,在误码率轻微增高的前提下,TL-LDPC编码的GSM系统中ML检测的复杂度远低于常规LDPC编码的GSM系统。

Two-layer low-density parity-check (TL-LDPC) codes was proposed to reduce the complexity of maximum-likelihood (ML) detection in the generalized spatial modulation (GSM) system. Simulation experiments were conducted for the GSM system coded by TL-LDPC and conventional LDPC(low-density parity-check) respectively. The results show that the complexity of ML detection in the GSM system coded by TL-LDPC is much lower than that coded by conventional LDPC under negligible increase of the bit error ratio (BER).