摘要
新一代无线通信系统要求大容量、高速率、综合业务、适用于各种环境。为满足上述要求，宜采用ＣＤＭＡ／ＴＤＭＡ／ＦＤＭＡ混合多址方式，其中多载波ＣＤＭＡ已成为目前研究热点。本文提出一种基于小波包变换的多载波ＣＤＭＡ或正交小波包分解复用（ＯＷＰＤＭ）－ＣＤＭＡ通信方式，介绍了其基本结构和主要优点。这是一种很有发展前景的多址通信技术。
The new generation communication systems are required to support high capacity,high data rate and integrated services.It also needs to be able to operate in various environments.To meet the above requirement,it is suitable to use the hybrid techniques of CDMA/TDMA/FDMA.Among those,multi carrier CDMA schemes have drawn much attentions.A new scheme of wavelet packet based multicarrier CDMA or orthogonal wavelet packet division multiplexing(OWPDM) CDMA is proposed in this paper.The basic structure and main advantages are introduced.It is a promising technique in developing multi access communication systems.
出处
《通信学报》
EI
CSCD
北大核心
1999年第3期28-35,共8页
Journal on Communications
基金
国家自然科学基金
关键词
小波包变换
多址通信
混合多址方式
wavelet packet transform,multiple access communications,hybrid multi access scheme,multirate signal processing
