基于子带滤波器组的宽带自适应天线旁瓣相消技术

文6]提出在数字移动通信中子带滤波器组处理可以提高不同阵元信号的相关性,从而能改善自适应阵列抑制码间干扰(ISI)和共信道干扰(CCI)的能力.在文6]的基础上,本文研究了子带滤波器组在宽带自适应天线旁瓣相消中的应用,对其原理进行了理论分析,提出了有效的子带处理方法.经研究表明,子带滤波器组处理能有效增加主、辅助天线信号的相关性,从而提高系统干扰相消比.而且适当的过采样能使系统干扰相消比进一步提高.计算机仿真结果和实测雷达数据处理结果证实了子带处理方法的有效性和理论分析的正确性.

Wideband Adaptive Antenna Sidelobe Cancellation via Exploitation of Subband Filter Banks

Subband adaptive array processing for mitigation of both intersymbol interferenc e(ISI) and cochannel interference(CCI) in digital mobile communications is propo sed in 6].The application of subband filter banks to wideband a daptive antenna sidelobe cancellation is studied and an efficient method is prop osed.It has been shown that the signal correlation of main channel and auxiliary c hannel can be enhanced via exploitation of subband filter banks.So the interfere nce cancellation performance can be improved.Appropriate oversampling can improv e the interference cancellation performance further.Computer simulation and real data processing results show that the method is effective and the theoretical a nalysis is correct.