Turbo-MIMO系统的质点滤波器检测  

Particle filtering detection for Turbo-MIMO systems

作　　者：郑贱平[1] 白宝明[1] 

机构地区：[1]西安电子科技大学综合业务网国家重点实验室,陕西西安710071

出　　处：《重庆邮电学院学报（自然科学版）》2006年第1期8-12,共5页Journal of Chongqing University of Posts and Telecommunications(Natural Sciences Edition)

基　　金：国家自然科学基金资助项目(60472098)

摘　　要：最近质点滤波器被提出用作贝尔实验室分层空时(BLAST)结构的硬判决检测方法。给出了BLAST结构的等价白化滤波器输出(WFO)模型和等价动态状态空间模型(DSSM),由DSSM推导出BLAST结构的软判决质点滤波器检测方法-随机M算法,最后将该方法应用于Turbo-MIMO系统并给出仿真结果。试验结果表明:和未编码结构相比,当系统谱效率为4 bit/(S.Hz-1)时,采用该检测方法的编码系统有大约11.5 dB的增益;谱效率为8 bit/(S.Hz-1)时,系统增益约为8 dB。Recently, a particle filtering（PF） has been used as a hard detection of the Bell Laboratories Layered Space-Time （BLAST） scheme. The equivalent whitening filter output （WFO） model of the BLAST scheme was introduced, and a corresponding dynamic state space model （DSSM） was formed. Then, a soft particle filtering detection, stochastic, M algorithm, for BLAST scheme was achieved with the help of the DSSM. Finally, by applying the soft detection to the Turbo-MIMO system some stimulation results were obtained. The results demonstrate that this system provides a gain of 11.5 dB when the spectral efficiency is 4 bit（S · Hz^-1 ）, while approximately 8 dB when the spectral efficiency is 8 bit（S · Hz^-1 ）compared with the uncoded system.

关 键 词：Turbo—MIMO系统 软信息 检测 质点滤波器 

分 类 号：TN929[电子电信—通信与信息系统]