MIMO-OFDM系统空间分集定时同步算法  

Timing synchronization algorithm for MIMO-OFDM systems with spatial diversity

作　　者：彭端[1] 彭珞丽[2] 尹长川[3] 乐光新[3] 

机构地区：[1]广东工业大学实验教学部,广东广州510006 [2]广东工业大学信息工程学院,广东广州510006 [3]北京邮电大学电信工程学院,北京100876

出　　处：《电路与系统学报》2008年第3期130-135,共6页Journal of Circuits and Systems

基　　金：国家自然科学基金资助项目(60472070);国家"863计划"项目(2003AA12331004);广州市应用基础研究项目(2006J1-C0331)

摘　　要：根据MIMO-OFDM系统无线传输信道的特性,提出了基于单个前导子符号的MIMO-OFDM系统空间分集定时同步算法,以克服高速无线多径信道中深衰落对MIMO-OFDM系统定时同步性能的影响,应用概率论推导出MIMO-OFDM系统空间分集算法的定时错误概率分布和概率密度数学表达式,并给出了MIMO-OFDM系统在无线多径信道中帧定时同步的仿真结果。By exploiting spatial characteristics of MIMO wireless channel, the time synchronization algorithm based on single symbol for MIMO-OFDM systems is presented. This algorithm is able to overcome the deep fading of received signal due to multipath in wireless environments. The mathematical expression of error probability of timing synchronization is derived. The simulation results are given in wireless multipath channel and verify the performance improvement.

关 键 词：MIMO-OFDM 定时同步 分集 

分 类 号：TN929.5[电子电信—通信与信息系统]