小波域抑制多音干扰的扩频接收机

利用小波包理论提出了一种快速、准确地识别并且抑制多音干扰的有效方法。该方法利用小波包理论将多音干扰的各条谱线逐个定位，然后通过功率谱分析的方法来识别多音干扰的存在区间，最后将被干扰污染的区间逐个切除并反向重构接收到的信号。实验证明该方法的误比特率性能在强干扰时要优于以前的FFT域切割法。

Multi-tone Interference Suppression Spread Spectrum Receiver in Wavelet Domain

This paper proposes an effective method to identify and suppress multi-tone interference quickly and accurately on the basis of wavelet packet theory.This method utilizes the wavelet packet theory to position the spectrum lines of multi-tone interference respectively,then identifies the distances where multi-tone interference exists using power spectrum analysis method,and finally cuts off the contaminated distances one by one and reconstructs the received signal along the opposite direction.Experiment proves that the bit error rate(BER) performance of the proposed method is prior to the cut-off method of FFT domain when the interference is strong.