一种基于二次迭代的同频干扰消除算法  

A Cochannel Interference Cancellation Algorithm based on Twice Iterations

作　　者：陆鹏[1] 宋春林[1] 柏亮[2] 宋超凡[2] 

机构地区：[1]同济大学电子与信息工程学院,上海201804 [2]中国航天科工四院红峰控制公司,湖北孝感432000

出　　处：《通信技术》2013年第8期1-4,共4页Communications Technology

基　　金：国家科技重大专项(No.2012ZX03001033)

摘　　要：在移动通信系统中,为了在目前有限的频率资源上提高系统的容量,通常采用降低小区复用因子的方法,但却引入了同频干扰,因此,提出了一种基于二次迭代的同频干扰消除算法。该算法在传统单频干扰消除算法的基础上进行了改进,解决了在时变参数情况下单频干扰消除算法估计出的参数值往往滞后于真实值的问题。仿真结果表明,该算法相对于传统单频干扰消除算法在性能有上所提高,能有效消除同频干扰,且性能稳定。In order to increase system capacity on the limited frequency resources of the mobile communications networks,the method that reduce reuse factor is usually adopted,and however this would result in cochannel interference to communications networks.This paper proposes a cochannel interference cancellation algorithm based on twice iterations.The proposed algorithm,based on the improved MIC algorithm,could solve the problem that the estimated parameter values by MIC algorithm often lag behind the real value under the condition of time-varying parameters.The simulation results indicate that the algorithm could effectively cancel the cochannel interference and maintain stable performance.

关 键 词：移动通信 同频干扰 单频干扰消除 二次迭代 

分 类 号：TN929[电子电信—通信与信息系统]