MIMO HSDPA系统中一种导频抵消迭代码片均衡算法  

Pilot cancellation iterative chip equalization for MIMO HSDPA systems

作　　者：宋绯[1] 吴启晖[1] 王金龙[1] 张玉恒[1] 

机构地区：[1]解放军理工大学通信工程学院,江苏南京210007

出　　处：《电路与系统学报》2009年第2期122-126,共5页Journal of Circuits and Systems

摘　　要：MIMO HSDPA(High Speed Downlink Packet Access)系统采用多天线技术,传统的LMMSE码片均衡算法计算复杂度较高,为降低运算量,本文将SMW定理引入LMMSE算法中,并引入导频抵消模块,提出了一种PC-ILMMSE算法。理论分析与仿真结果表明,新算法的性能优于传统的LMMSE,而运算量大大降低。Traditional chip LMMSE algorithm has unbearable computational complexity for MIMO HSDPA （High Speed Downlink Packet Access） owing to multiple antennas. In order to reduce computational complexity, SMW theorem is used in LMMSE, and furthermore a pilot cancellation module is added. A PC-ILMMSE （pilot cancellation iterative LMMSE） algorithm is proposed. Theoretic analysis and computer simulations show that performance of new algorithm is superior to traditional LMMSE. But computation of it is much lower than LMMSE.

关 键 词：MIMO HSDPA 码片均衡 导频抵消 块迭代 SMW 

分 类 号：TN914[电子电信—通信与信息系统]