用阵列抑制TDMA无线通信系统中的共信道干扰  

Use Arrays in TDMA Mobile Communication for Canceling Cochannel Interferences

作　　者：崔炎[1] 吕善伟[1] 毛峡[1] 

机构地区：[1]北京航空航天大学电子工程系,北京100083

出　　处：《电子学报》2002年第12期1790-1793,共4页Acta Electronica Sinica

基　　金：国家自然科学基金(No.60072005)

摘　　要：介绍了采用阵列天线抑制TDMA移动通信系统中的共信道干扰(Cochannel Interference)的方法.采用阵列的共信道干扰抑制在空域中进行,接收阵列自适应方向图能够直接反映出抑制干扰的性能.应用具有闭式解的方法具体分析了抑制干扰效果;分别利用8元线阵和4元线阵对一个实际信号图景进行仿真,给出了方向图和阵列输出信干噪比(SINR)的数值结果,比较分析了不同方法的性能和影响干扰抑制效果的因素.Methods used in TDMA mobile communication to eliminate cochannel TDMA interferences is presented. Since these methods use the spatial filtering, it is reasonable to use adaptive patterns to analyze the performance. Discussion about the performance of these methods is made from the view of adaptive patterns with methods which have close-form solutions. An actual signaling scenario is presented, and is followed by the simulation results such as adaptive patterns and the SINR of array output, using 8-element array and 4-element array. Factors which influence the effect of cochannel interference imination are discussed.

关 键 词：阵列抑制 TDMA 无线通信 共信道干扰 自适应阵列 最小平方准则 GSM 

分 类 号：TN92[电子电信—通信与信息系统]