CMFB-DWMT多载波系统与DMT多载波系统的比较  

The comparison between multi-carrier systems of CMFB-DWMT and DMT

作　　者：程玉荣 邵晓君 刘鸿 

机构地区：[1]青岛潜艇学院观通教研室,山东青岛266071

出　　处：《通信学报》2002年第1期60-69,共10页Journal on Communications

摘　　要：本文首先讨论了基于余弦调制滤波器组(cosine modulation filter-banks—CMFB)的多载波调制解调结构的快速实现。然后在性能和抗噪方面对CMFB多载波结构与DMT(discrete multi-tone)作了分析和比较。计算机仿真结果显示,CMFB-DWMT(discrete wavelet multi-tone)在频域特性、抑制噪声和抑制突发错误方面比DMT有较大的优势。In this article, we first discuss the rapid realization of multi-carrier modulation-demodulation structure based on cosine modulation filter-banks(CMFB). Then, we analyze and compare the transmission performance and noise immunity of CMFB-DWMT (discrete wavelet multi-tone) with those of DMT(discrete multi-tone). The results of computer simulation show that CMFB-DWMT has better performance than DMT in frequency efficiency, noise immunity, and restraining burst error.

关 键 词：余弦调制滤波器组 离散多音 多载波系统 

分 类 号：TN913.6[电子电信—通信与信息系统]