空时分组码OFDM系统的上行多用户检测  

Uplink multi-user detection for STBC coded OFDM systems

作　　者：金奕丹[1] 张峰[1] 吴伟陵[1] 贺志强[1] 

机构地区：[1]北京邮电大学信息工程学院,北京100876

出　　处：《电路与系统学报》2007年第6期60-63,共4页Journal of Circuits and Systems

基　　金：国家重点基础研究发展计划资助项目(2007CB310604);国家863计划资助项目(2001AA123016)

摘　　要：针对目前空时编码结构大多只研究单用户检测这一现状,研究了空时分组码OFDM系统的多用户结构,并提出了一种性能次优的基于均值的软判决多用户检测(SDMUD)算法。仿真表明,该检测算法性能要比MMSE线性检测算法提高约4dB,可获得较为满意的干扰消除效果,满足系统对多用户检测性能的现实期望。Most proposed space-time code schemes focus on the single-user scenario, which cannot be applied in the mobile communication systems directly. A near-optimum mean-based soft decision multi-user detection （SDMUD） technology is proposed for STBC coded OFDM systems. The simulations show that the proposed detection algorithm gives the performance improvement in SNR about 4dB compared to MMSE, and can greatly reduce the inter-user interference to meet the expectation of the practical system.

关 键 词：空时分组码 正交频分复用 多用户检测 

分 类 号：TN929.5[电子电信—通信与信息系统]