自适应滤波器抑制CDMA中的BPSK窄带干扰

Adaptive Filter for BPSK Narrow band Interference Suppression in CDMA

根据码分多址（ＣＤＭＡ）信号的特点，采用最简单的自适应线性预测器（ＡＬＰ）抑制ＣＤＭＡ中的窄带干扰（ＮＢＩ），以实现ＣＤＭＡ系统与现有模拟和数字窄带系统兼容运行．应用３种改进的ＬＭＳ算法，通过计算机模拟从跟踪能力、失调和运算量等方面进行比较分析。

The simplest Adaptive Linear Prediction (ALP) is used for BPSK narrow band interference suppression in CDMA to achieve compatibility of both CDMA systems and existing narrowband system which can be analog or digital.Three improved LMS algorithms are used. Comparison is made in terms of tracking ability, misadjustement and operation quantity by computer simulations.Some conclusions are obtained.