利用循环频率域分离技术的多用户信道辨识  

Multiuser Channel Identification Using the Technique of Cyclic Frequency Domain Separation

作　　者：赵建春[1] 曹士坷[1] 

机构地区：[1]南京邮电大学通信与信息工程学院

出　　处：《南京邮电大学学报（自然科学版）》2012年第5期90-96,共7页Journal of Nanjing University of Posts and Telecommunications：Natural Science Edition

摘　　要：利用调制产生的循环平稳性提出了一种多用户信道的非盲估计方法。它利用循环频率域用户分离的方法辨识不同用户的信道。即利用循环频率的互不相同性将用户信号的二阶统计量从接收的多用户信号中分离出来。该方法简单明了且有较强的抗干扰能力。文中讨论了算法的计算机仿真。对多用户系统的仿真结果表明该算法收敛速度较快并且有良好的抗干扰能力,从而验证了算法的有效性和可靠性。In this paper a non-blind approach is presented for the multiuser channel identification based on stability of cyclic frequency produced by modulation.It uses the cyclo-frequences induced method to identify the channels of different users.Namely,the second-order statistics of user＇s signal can be separated from multi-user signal by using the difference of cyclo-frequences.The approach is simple with interference rejection capabilities.The simulation results are presented to verify the proposed algorithm.The results show that the algorithm converges fast and has good anti-jamming capability.Also the effectiveness and reliability of the algorithm are verified.

关 键 词：信道辨识 循环平稳 多用户 

分 类 号：TN911.5[电子电信—通信与信息系统]