【摘要】 CDMA通信中的窄带干扰是其主要干扰类型之一。文章首先综述了目前比较先进的基于小波包变换的变换域自适应窄带干扰抑制技术:自适应小波包时频抗干扰技术和小波包自适应滤波技术。针对上述小波包分解过程是按小波包基顺序排列而非按频带顺序排列不利于干扰分析和定位这一问题,提出了一种基于按频带顺序排列的小波包变换的自适应窄带干扰抑制技术,详细说明了其基本思想。该技术便于工程上干扰分析及抑制。更多还原

【Abstract】 Narrow interference is one of the main interfernences in CDMA communication systems.Two advanced rejection techniques of narrow interference based on wavelet packet transformation are summarized.Since the wavelet packet decomposing used in positioning interference are aligned in wavelet packet base order not in frequency-band order and that is not convenient,a new technique for rejection of interference is presented.It is used to realize positioning interference.The main idea of it is stated in detail.This technique is helpful to position and analysis of interference.更多还原