An improved multiple access design for UWB communication system

被引：0
作者：
Zhu, XT [1 ]
Deng, TL [1 ]
Zhou, Z [1 ]
机构：
[1] Beijing Univ Posts & Telecommun, Sch Telecommun Engn, Beijing 100088, Peoples R China
来源：
APOC 2003: ASIA-PACIFIC OPTICAL AND WIRELESS COMMUNICATIONS; WIRELESS COMMUNICATIONS AND NETWORKS | 2003年 / 5284卷
关键词：
UWB; orthogonal wavelet; multiple access; TH-PPM; DS-BPSK;
D O I：
10.1117/12.523397
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
The multiple access interference is the main reason that limits the UWB system capacity. The flexibility of pulse selection is a prominent property which is different from the conventional communications. In this paper, a new multiple-access scheme: Waveform Division Multiple Access (WDMA) based on the orthogonal wavelet function shapes is presented. In this scheme, the scaling function phi(t) and the wavelet function psi(t) representing the UWB pulses are equally assigned to different users to realize multiple access. Because of the better orthogonality of phi(t) and psi(t), the multiuser interference will be suppressed more effectively. The performance analysis and simulation results show that WDMA system can accommodate more users than TH-PPM UWB and DS-BPSK UWB system.
引用
收藏
页码：95 / 104
页数：10
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