自适应天线阵列在OFDM系统中的应用  

Application of Adaptive Antenna Array Techniques Used for the OFDM System

作　　者：颜永庆[1] 蒋朱成[1] 赵春明[1] 尤肖虎[1] 

机构地区：[1]东南大学移动通信国家重点实验室,江苏南京210096

出　　处：《应用科学学报》2004年第1期50-54,共5页Journal of Applied Sciences

基　　金：国家杰出青年基金资助项目(69725001)

摘　　要：在简要介绍OFDM系统的基础上,提出了一种将卡尔曼滤波运用于OFDM系统的自适应天线阵列方法,理论分析并计算机仿真了系统误码率性能.结果表明文中提出的自适应天线阵列在消除OFDM系统同频干扰、提高系统接收性能方面显示出良好的性能.Orthogonal frequency division multiplexing (OFDM), which has been widely used in the wire and wireless communication systems, is a promising technique in future wireless communications for its good performance in combating multipath fading. Based on the analysis of the basic OFDM system, an adaptive antenna array with Kalman algorithm of updating weights of antenna arrays in the frequency domain is presented in the paper. Theoretical analysis and computer simulation results show that the adaptive antenna array with the proposed algorithm has good performance in suppressing co-channel interference and can improve the receiving performance of the system.

关 键 词：自适应天线阵列 OFDM系统 波束成形 正交频分复用 卡尔曼滤波 数字通信 

分 类 号：TN914.3[电子电信—通信与信息系统] TN821[电子电信—信息与通信工程]