DESIGN OF LOWDENSITY PARITY CHECK.doc

Design of Low-density Parity Check 文章来源 毕业论文网 全部作者： 梅中辉 第1作者单位： 东南大学无线电系 论文摘要： A soft interference probabilistic data association (SC-PDA ) detector is proposed for multiple-input, multiple-output (MIMO) system, which can provide a better performance than probabilistic data association (PDA) detector with lower complexity. The MIMO doubly-iterative receiver consists of two iterative decoding loops. In the outer loop, the soft information is exchanged between the MIMO 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, a LDPC code degree profile optimization algorithm is developed for the doubly-iterative receiver. Simulation results show the doubly-receiver with SC-PDA can have a better performance than the one with PDA, additional performance gains can be achieved by employing the optimized irregular LDPC code than the regular one. 关键词： probabilistic data association (PDA), multiple-input, multiple-output (MIMO), low-density parity-check codes (LDPC), extrinsic information transfer (EXIT) chart (浏览全文) 发表日期： 2006年10月24日 同行评议： （暂时没有） 综合评价： （暂时没有） 修改稿：