MIMOBC中新的TH预编码方法  

A Novel TH Precoding Method for MIMO BC

作　　者：刘金锋[1] 李安平[1] 樊昌周[2] 郭英[2] 

机构地区：[1]空军工程大学理学院,西安710051 [2]空军工程大学电讯工程学院．西安710077

出　　处：《电讯技术》2010年第11期49-52,共4页Telecommunication Engineering

基　　金：陕西省自然科学基金资助项目(SJ08F11)~~

摘　　要：针对多用户MIMO广播信道下预编码技术提出了发射端配置两根天线的改进TH预编码方案。该方法突破了传统TH预编码方案发射天线与接收天线数量的限制,并且得到了很好的分集和复用增益。仿真结果表明,所提算法在容量上接近理论容量界,且当误码率为10-2时,所提方案相比单天线THP有9 dB的增益。Aiming at the precoding technique for multiuser MIMO broadcasting channel,an improved precoding algorithm is proposed by installing two antennas at the transmitter terminal.This method breaks through the restriction of the amounts of transmitting antenna and receiving antenna in traditional Tomlinson-Harashima precoding（THP） algorithms,and obtains higher diversity and multiplex gains.According to the simulation results,the capacity of the proposed algorithm is close to the theoretical capacity bound.Besides,it has 9dB gain compared with the single antenna THP when the bit error rate（BER） is 10-2.

关 键 词：多输入多输出 TH预编码 信道协方差 有限反馈 

分 类 号：TN929.5[电子电信—通信与信息系统]