摘要
提出了一种长期演进项目的后续演进(long term evolution-advanced,LTE-A)中的信漏噪比联合校准多用户多流波束赋形方案。基于信漏噪比准则进行波束赋形消除多用户间干扰,实现LTE-A下的多用户多流波束赋形传输;建立信道校准机制,补偿实际通信系统中的射频增益影响,恢复信道互易性,提升实际通信系统中的误码率性能。在适用于LTE-A的空间信道扩展模型(spatial channel model extension,SCME)信道环境下进行了仿真,仿真结果表明,该方法相比常用的基于信干噪比准则的块对角化方案误码率性能有明显提升,且能在存在射频增益影响的非理想环境中恢复信道互易性,提升系统传输性能。
A method based on signal to leakage and noise ratio （SLNR） and combined with channel calibration scheme to achieve multi-user and multi-stream transmission for long term evolution-advanced systems is proposed. In use of SLNR principle, it reduces the interference between different users. Through the establishment of the channel calibration scheme, the proposed method restores the channel reciprocity of practical com- munication systems, improves the system performance. Simulation results show that its system performance is better than traditional block diagonalization （BD） transmission, it restores the channel reciprocity of non-ideal channel effectively, improves the system performance.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2012年第11期2351-2354,共4页
Systems Engineering and Electronics
基金
毫米波国家重点实验室开放项目(K201009)资助课题
关键词
无线通信技术
联合校准波束赋形
多流波束赋形
信漏噪比
信道互易性
wireless communication technology
combined calibration beamforming
multi-stream beamforming
signal to leakage and noise ratio （SLNR）
channel reciprocity
