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一种基于小波包变换的MC-CDMA系统 被引量:2

A MC-CDMA system based on wavelet packet transform
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摘要 本文提出了一种基于小波包变换的多载波子信道并行传输的CDMA 系统模型和利用不同小波包子空间进行分集接收的概念,结合多径信道,进行了理论分析,利用GSM-TU6 信道模型对所提出的系统进行了性能仿真。 In this paper we proposed a new multicarrier(MC) CDMA(code division multiple access)system based on wavelet packet transform(WPT)and gave the idea of the diversity reception in wavelet packet subspaces.We looked into the performance of the proposed system in the multipath environment and have found that the nature of close support in time domain and localization in frequency domain of the wavelet packet function makes the system superior to conventional ones.The computer simulation shows that the WPT CDMA system outperforms the DFT(discrete Fourier transform)based MC CDMA system in the channel specified by GSM TU6.In the meantime the diversity reception with equal combining of different wavelet packet subspaces can improve the performance of the proposed system remarkably.
出处 《通信学报》 EI CSCD 北大核心 2000年第1期13-21,共9页 Journal on Communications
基金 863 基金资助项目
关键词 小波包变换 MC-CDMA 移动通信 multicarrier code division multiple access wavelet packet transform
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参考文献2

  • 1魏急波,博士学位论文,1998年
  • 2Chang K H,ISSS TA96,1996年,1356页

同被引文献24

  • 1John A.C. Bingham, Multicarrier modulation for data transmission: an idea whose time has come , IEEE Communications Magazine, May 1990:5-14
  • 2Essam A.Sourour and Masao Nakagawa, Performance of Orthogonal Multicarder CDMA in a Multipath Fading Channel, IEEE Trans. On Communications, VOL.44,NO.3, Mar. 1996:356-367
  • 3G. W. Women, Emerging applications of multirate signal processing and wavelets in digital communications, Proc of the IEEE, VOL.84, NO.4, Apr. 1996:586-603
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  • 6Nurulfajar Abd Manap, Ishak Suleiman, Sheikh Hussain Sheikh Saleh and Zulfakar Aspar, Implementation of wavelet codrc by using Texas Instruments DSP TMS320c6701 EVM board, International Symposium on Signal Processing and its Applications(ISSPA), Kuala Lumpur, Malaysia,13-16 August, 2001:615-619
  • 7G. W. Womell and A.V.Oppenhiem, Wavelet-Based Representations for a Class of Self-Similar Signals with Application to Fractal Modulation, IEEE Trans. On Information Theory, VOL.38, NO.2, Mar. 1992:785-799
  • 8Fu-Yen Kuo and Ginkou Ma, On performance of the wavelet domain multirate transmission for wireless multimedia, IEEE 1997:413-418
  • 9M. J. Manglani and A. E. Bell, Wavelet modulation performance in gaussian and Rayleigh fading channels,IEEE 2001:845-849
  • 10K. M. Wong, Jiangfeng Wu, T. N. Davidson, Qu jin a ndP.-C. Ching, Performance of Wavelet Packet-Division Multiplexing in Impulsive and Gaussian Noise, IEEE Trans. On Communications, VOL.48, No.7, July 2000:1083-1086

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