一种空间相关信道收发联合自适应MIMO传输方法  

Transmitter-receiver combined adaptive MIMO transmission scheme for spatially correlated channels

作　　者：李钊[1] 杨家玮[1] 姚俊良[1] 韩维佳[1] 

机构地区：[1]西安电子科技大学综合业务网理论及关键技术国家重点实验室,陕西西安710071

出　　处：《西安电子科技大学学报》2009年第4期590-595,共6页Journal of Xidian University

基　　金：国家杰出青年科学基金资助(60725105);国家重点基础研究发展计划(973计划)课题资助(2009CB320404);长江学者和创新团队发展计划资助;863计划课题资助(2007AA01Z288);国家自然科学基金资助(60572146);高等学校引智计划资助(B08038);教育部科学技术研究重点项目资助(10703)

摘　　要：在IEEE 802.11n簇信道模型下,以均匀线阵、均匀圆阵和星形阵形成的复合天线结构为基础,考虑空分复用和波束形成两种传输机制,设计一种自适应MIMO传输方法.由移动台和基站综合利用瞬时信道信息和空间统计信道信息,共同完成传输方式和天线阵列形式的自适应选择.与完全基于信道统计信息的自适应方法相比,该方法能够获得更高的各态历经容量,逼近最优选择的结果.并且计算复杂度低,只需要很少的反馈开销.We propose an adaptive MIMO transmission technique in IEEE 802. lln clustered MIMO channels. In the strategy a compound antenna structure composed of uniform linear array, uniform circular array and star array, and two transmission schemes including spatial multiplexing and beamforming are considered. The mobile station and base station utilize the instantaneous and spatially statistical channel information to cooperatively implement adaptation among different transmission schemes and antenna array types. Compared with the method based on statistical channel information only, the proposed method can achieve better capacity performance approximating the optimal ergodic capacity with the complexity reduced and little feedback cost needed.

关 键 词：MIMO系统 空分复用 波束形成 天线阵列 自适应 各态历经容量 

分 类 号：TN929.5[电子电信—通信与信息系统]