摘要
接收机上接收到的信号容易被广播电台的语音噪声所干扰。而且随着广播电台的繁荣发展,语音干扰的能量越来越大,易造成误码从而严重影响信号的传输速度和质量。由于语音噪声的非平稳性,传统的消噪方法难以取得较好的效果。本文提出一种基于小波变换的语音噪声消除算法,对短波信道上的实际接收到的BPSK信号进行消噪处理。接收信号上的加性语音噪声被大幅度削减,系统的误码率性能得到很大提升,验证了算法具有良好的消噪能力。
The received signal tend to be interferenced by radio voice noise.With the prosperous development of radio industry,the energy of noise is increasing to influence the transmitting speed and quality of communication system.Due to the non-smooth of voice noise,traditional denoising methods are not available.This paper introduces an voice-denoising algorithm based on Wavelet transform to lower the energy of voice noise added on received BPSK signal.The result shows us that this algorithm has an excellent denoising ability and improves the SNR/BER performance of communication system.
出处
《无线通信技术》
2012年第1期22-25,共4页
Wireless Communication Technology
关键词
语音噪声
非平稳性
消噪
小波变换
voice noise
non-smooth
denoising
wavelet transform
