一种实现非等带宽多载波调制的新方法  

A new method of realizing the unequal bandwidth multicarrier modulation

作　　者：黄胜华[1] 赵彤[1] 

机构地区：[1]中国科学技术大学,安徽合肥230027

出　　处：《通信学报》2002年第9期119-126,共8页Journal on Communications

摘　　要：传统的多载波调制都是采用对传输信道进行等带宽划分的方式。为了更好地适应信道传输特性,一个很有应用前景的发展方向是采用非等带宽划分信道的多载波调制方式。本文提出了一种利用正交小波包变换实现的非等带宽划分信道的多载波调制方法。理论分析和实验结果表明,这种方法对于提高信道的传输性能有很大的潜力。In the traditional multicarrier modulation, the channel is divided into equal-bandwidth subchannels. In order to fit the channel characteristics well, adopting the way of parting the channel unequally is an important development direction of multicarrier modulation. In this paper, we present an algorithm of realizing the parting the channel unequally by using the orthogonal wavelet packet transforms in the multicarrier modulation. The theoretical analyses and the simulation results show that this way has great potential to improve the transmission performance of the channel.

关 键 词：多载波调制 正交小波包变换 多速率系统 非等带宽划分信道 MCM 

分 类 号：TN919[电子电信—通信与信息系统] TN761[电子电信—信息与通信工程]