窄带干扰抑制技术中信号阶数对干扰性能的影响  

Influence of signal order on suppressing narrow-band interference

作　　者：杨阳[1] 曾凡鑫[1] 杨波[1] 张超[1] 

机构地区：[1]重庆通信学院,重庆400035

出　　处：《重庆邮电学院学报（自然科学版）》2005年第3期320-322,共3页Journal of Chongqing University of Posts and Telecommunications(Natural Sciences Edition)

基　　金：国家自然科学基金资助项目(60272083);重庆市自然科学基金资助

摘　　要：采用参数法估计接收信号的AR系数时,主要的问题就是确定AR的阶数。虽然预测误差与AR阶数成反比,但是由于过大的阶数会产生虚假谱峰,因此并不是阶数越高抑制干扰的性能就越好。根据窄带信号及切割技术的特点,认为把信号看作低阶谱更容易接收一些,并且验证了该提法。The order of an AR(Autoregressive) model plays an important role in the modeling problem. Though the modeling error is inverse proportion with the order, the larger order may contain the spectrum spurious peaks at best. According to the characters of the NBI (Narrow Band Interference) and technique of excision a new rule that the NBI is estimated by lower order is presented and the rule is testified.

关 键 词：窄带抑制 切割技术 参数估计 AR谱阶数 

分 类 号：TN914.42[电子电信—通信与信息系统]