摘要
针对上行多用户MIMO系统,提出了一种新的空时检测算法。算法首先对接收信号进行线性重组,然后采用正交于各用户干扰集的匹配滤波向量来消除多用户间干扰,最后各用户利用等效信道的正交性实现线性译码。给出了非理想信道环境下算法的设计。理论分析及仿真结果表明,该算法具有复杂度低和顽健性好的优势,且性能优于其他检测算法。
Aiming at the uplink multiuser MIMO system,a new space-time detecting algorithm was proposed,in which a linear recombination strategy was imposed on the received signal first,and then the matched filter vectors orthogonal to each users’ interference sets were used to eliminate the interference among users.Finally the signal of each user was line-arly space-time decoded by means of the orthogonal equivalent channel.The design of the algorithm under imperfect channel scenario was also provided.Theory analysis and simulation results reveal that the proposed algorithm has the advantages of low complexity and good robustness,and is superior to other detecting algorithms.
出处
《通信学报》
EI
CSCD
北大核心
2010年第8期114-120,共7页
Journal on Communications
基金
国家自然科学基金资助项目(60702060)
高等学校学科创新引智计划基金资助项目(B08038)
国家重点实验室专项基金资助项目(ISN03080005)
下一代宽带无线移动通信网络国家重大专项(2009ZX03003-005)~~
关键词
多用户
空时编码
检测
等效信道
multiuser
space-time code
detection
equivalent channel
