摘要
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。
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 sisal along the opposite direction. Experiment proves that the bit error rote(BER) performence of the proposed method is prior to the cut -off method of FFT domain when the interference is strong.
出处
《电讯技术》
2006年第4期13-17,共5页
Telecommunication Engineering
基金
山东省科学院博士基金重点项目(科基合字2004第5号)
关键词
扩频通信
接收机
多音干扰
干扰抑制
小波包
spread spectrum communications
receiver
multi - tone interference
interference suppression
wavelet packet
作者简介
陈长英(1971-),男,辽宁沈阳人,博士,副研究员,主要研究方向:无线电通信和信号电话)0531-82605397(电子信箱)163.com;
杨秀红(1977-),女,山东泰安人,学士,中级教师,主要从事计算机和电子技术的教学及实验管理工作。