MIMO系统的一种改进的复数域球译码算法  

Modified Sphere-Decoding Algorithm in the Complex Domain of MIMO System

作　　者：赵东峰[1] 金鑫[1] 李道本[1] 

机构地区：[1]北京邮电大学信息处理与人工智能重点实验室,北京100876

出　　处：《天津大学学报》2009年第4期368-372,共5页Journal of Tianjin University(Science and Technology)

基　　金：国家自然科学基金资助项目(90604035)

摘　　要：为降低球译码算法复杂度,采用概率计算的方法,推导出多入多出(MIMO)系统的一种改进的复数域球译码算法.比较了采用经典复数域球译码算法和采用改进的复数域球译码算法的性能与复杂度.仿真结果表明,高信噪比条件下,改进算法的复杂度与发送天线数的2次方成正比.To reduce the complexity of the sphere-decoding algorithm, a modified sphere-decoding algorithm in the complex domain based on probability computation was proposed for multiple input and multiple output （MIMO）system. The performance and the complexity of the modified algorithm were compared with those of the classical sphere-decoding algorithm through simulation. With a high signal-to-noise ratio, the complexity of the modified algorithm is only a quadratic polynomial of the number of the transmit antennas.

关 键 词：MIMO 球译码 算法复杂度 

分 类 号：TN911.23[电子电信—通信与信息系统]