高技术通讯2011，Vol.21Issue(4)：374-379,6.DOI:10.3772/j.issn.1002-0470.2011.04.008
基于正交复小波变换和小波去噪的改进系统De-OCWDM
De-OCWDM: an improved system based on orthogonal complex wavelet transform and wavelet de-noise
摘要
Abstract
The approximate linear-phase orthogonal complex wavelet transform (ALOCWT) was used to replace the discrete Fourier transform (DFT) that orthogonal frequency division multiplexing (OFDM) systems generally use, and an orthogonal complex wavelet division multiplexing (OCWDM) system was formed. The ALOCWT can well substitute for the DFT because of its time-frequency property, orthogonality property and reconstruction property, and it is good at keeping complex signals to make signal reconstruction much more accurately to improve the systems transmission reliability and bandwidth efficiency. The property of signal concentration and Gaussian noise spreading in the wavelet domain was used to denoise the received signals of the OCWPM system, resulting in the de-noising orthogonal complex wavelet division multiplex (De-OCWDM) system. The system further improved the bit error rate (BER).关键词
近似线性相位正交复小波变换(ALOCWT)/正交频分复用系统(OFDM)/时频特性/误码率(BER)/信道噪声Key words
approximate linear-phase orthogonal complex wavelet transform (ALOCWT)/ orthogonal frequency division multiplex (OFDM)/ time-frequency property/ bit error rate (BER)/ channel noise引用本文复制引用
吴游,殷奎喜,赵华,吴勇..基于正交复小波变换和小波去噪的改进系统De-OCWDM[J].高技术通讯,2011,21(4):374-379,6.基金项目
863计划(2007AA12Z238)资助项目. （2007AA12Z238）
