基于多子波的CDMA系统

潘进; 焦李成; 方洋旺

基于多子波的CDMA系统

潘进^{①②;焦李成},
焦李成,
方洋旺

计量
- 文章访问数: 1853
- HTML全文浏览量: 80
- PDF下载量: 587
- 被引次数: 0
出版历程
- 收稿日期: 2001-02-11
- 修回日期: 2001-08-17
- 刊出日期: 2002-09-19

CDMA system based on multiWavelet

Pan Jin^{①②;焦李成},
Jiao Licheng,
Fang Yangwang

摘要

摘要: 将多子波的分析滤波器、预处理以及平衡化等方面的最新研究成果应用于通信领域,提出了多子波码分多址(MW-CDMA)通信系统的理论框架。在MW-CDMA中,系统首先将接收信号投影到相互正交的子波空间上,然后在各子波空间中进行多用户解调。理论分析系和仿真结果表明,这种系统可以很好地抑制多址干扰和环境噪声。同时也为减少解码的计算量提供了新的思路。
- CDMA; 多子波; 平衡化; 分析滤波器
Abstract: A MultiWavelet-based Code-Division Multiple-Access (MW-CDMA) scheme is presented based on the application of recent results in multiwavelet analysis filter, preprocessing and balancing to communications area. In MW-CDMA, at first, the received signal is decomposed into the components in the orthogonal wavelet spaces, and then the multiuser demodulation is implemented in each wavelet space. Theoretical analyses and experimental results show that MW-CDMA systems suppress multiple-access interference and ambient noise well. Moreover, the scheme gives a new guideline of thought to reduce the computation for demodulating.

HTML全文

参考文献(1)

S. Verd, Multiuser Detection, Cambridge, U K, Cambridge Univ. Press, 1998, Chapter4～Chapter7.[2]G. Woodward, B. S. Vuctic, Adaptive detection for DS-CDMA, Proc. IEEE, 1998, 86(7), 1413-1433.[3]X. Wang, H. V. Poor. Blind joint equalization and multiuser detection for DS-CDMA in unknowncorrelated noise, IEEE Trans. on Circuits and Systems-II: Analog and Digital Processing, 1999,CAS-II-46(7), 886-895.[4]A. Duel-Hallen, A family of multiuser decision-feedback detectors for synchronous code-divisionmultiple access channel, IEEE Trans. on Commun., 1995, COM-43(2/3/4), 421-434.[5]A.N. Akansu, P. Duhamel, X. Lin, Marc de Courville, Orthogonal transmultiplexers in communication: A review, IEEE Trans. on Signal Processing, 1998, SP-46(4), 979-995.[6]Q. Jiang, Orthogonal multiwavelets with optimum time-frequency resolution, IEEE Trans. onSignal Processing, 1998, SP-46(4), 830-844.[7]J. Pan, L. Jiao, L. Chen, Construction of orthogonal multiwavelets with short sequence via geneticalgorithm, Progress in Natural Science, 2000, 10(4), 294-301.[8]X.G. Xia, A new prefilter design for discrete multiwavelet transforms, IEEE Trans. on SignalProcessing, 1998, SP-46(6), 1558-1570.[9]X. Yang, L. Jiao, J. Pan, Prefilter for multiwavelet neural network, Progress in Natural Science,2000, 10(10), 780-786.[10]J. Lebrun, M. Vetterli, Balanced multiwavelets theory and design, IEEE Trans. on Signal Processing, 1998, SP-46(4), 1119-1125.[11]J.S. Geronimo, D. P. Hardin, P. R. Massopust. Fractal functions and wavelet expansions basedon several scaling functions, Journal of Approximation Theory, 1994, 78(3), 373-401.

施引文献

资源附件(0)

访问统计