DESIGN OF LOW-DENSITY PARITY CHECK CODES FOR MIMO SYSTEMS WITH DOUBLY-ITERATIVE RECEIVERS  

作　　者：Mei Zhonghui Li Xiaofei 

机构地区：[1]College of Telecommunication and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003, China

出　　处：《Journal of Electronics(China)》2010年第4期553-556,共4页电子科学学刊（英文版）

基　　金：Supported by the National Natural Science Foundation of China (No. 60772061);Science Foundation of Nanjing University of Posts and Telecommunications (No. NY207132)

摘　　要：In this paper, the Multiple Input Multiple Output (MIMO) doubly-iterative receiver which consists of the Probabilistic Data Association detector (PDA) and Low-Density Parity-Check Code (LDPC) decoder is developed. The receiver performs two iterative decoding loops. In the outer loop, the soft information is exchanged between the PDA detector and the LDPC decoder. In the inner loop, it is exchanged between variable node and check node decoders inside the LDPC decoder. On the light of the Extrinsic Information Transfer (EXIT) chart technique, an LDPC code degree profile optimization algorithm is developed for the doubly-iterative receiver. Simulation results show the doubly-receiver with optimized irregular LDPC code can have a better performance than the one with the regular one.In this paper, the Multiple Input Multiple Output （MIMO） doubly-iterative receiver which consists of the Probabilistic Data Association detector （PDA） and Low-Density Parity-Check Code （LDPC） decoder is developed. The receiver performs two iterative decoding loops. In the outer loop, the soft information is exchanged between the PDA detector and the LDPC decoder. In the inner loop, it is exchanged between variable node and check node decoders inside the LDPC decoder. On the light of the Extrinsic Information Transfer （EXIT） chart technique, an LDPC code degree profile optimization algorithm is developed for the doubly-iterative receiver. Simulation results show the doubly-receiver with optimized irregular LDPC code can have a better performance than the one with the regular one.

关 键 词：Probabilistic Data Association (PDA) Multiple-Input Multiple-Output (MIMO) Low-Density Parity-Check Code (LDPC) Extrinsic Information Transfer (EXIT) chart 

分 类 号：TN914[电子电信—通信与信息系统]