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

作　　者：郑言言 陈雯[1,2] ZHENG Yanyan;CHEN Wen(College of Information Science and Technology, Donghua University,Shanghai 201260, China;Key Laboratory of Network Communication, Donghua University, Shanghai 201260, China)

机构地区：[1]东华大学信息科学与技术学院,上海201620 [2]东华大学网络通信实验室,上海201620

出　　处：《东华大学学报（自然科学版）》2019年第1期82-86,共5页Journal of Donghua University(Natural Science)

基　　金：国家自然科学基金资助项目(61501108)

摘　　要：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).

关 键 词：广义空间调制(GSM) 最大似然(ML)检测 双层低密度奇偶校验(TLLDPC)码 

分 类 号：TN92[电子电信—通信与信息系统]