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CLC number: TN929

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Received: 2004-03-03

Revision Accepted: 2004-07-28

Crosschecked: 0000-00-00

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Journal of Zhejiang University SCIENCE A 2005 Vol.6 No.1 P.38-42

http://doi.org/10.1631/jzus.2005.A0038


A novel constant modulus array for multiuser detection*


Author(s):  Ji-dong Zhang1,2, Bao-yu Zheng3, Hong-liang Fu4

Affiliation(s):  1. Department of Electronic Engineering, Shanghai Jiaotong University, Shanghai 200030, China; more

Corresponding email(s):   hdcools@sjtu.edu.cn

Key Words:  Constant modulus algorithm, Adaptive array, Wavelet de-noising, Multiuser detection, CDMA


ZHANG Ji-dong, ZHENG Bao-yu, FU Hong-liang. A novel constant modulus array for multiuser detection[J]. Journal of Zhejiang University Science A, 2005, 6(1): 38-42.

@article{title="A novel constant modulus array for multiuser detection",
author="ZHANG Ji-dong, ZHENG Bao-yu, FU Hong-liang",
journal="Journal of Zhejiang University Science A",
volume="6",
number="1",
pages="38-42",
year="2005",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.2005.A0038"
}

%0 Journal Article
%T A novel constant modulus array for multiuser detection
%A ZHANG Ji-dong
%A ZHENG Bao-yu
%A FU Hong-liang
%J Journal of Zhejiang University SCIENCE A
%V 6
%N 1
%P 38-42
%@ 1673-565X
%D 2005
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2005.A0038

TY - JOUR
T1 - A novel constant modulus array for multiuser detection
A1 - ZHANG Ji-dong
A1 - ZHENG Bao-yu
A1 - FU Hong-liang
J0 - Journal of Zhejiang University Science A
VL - 6
IS - 1
SP - 38
EP - 42
%@ 1673-565X
Y1 - 2005
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.2005.A0038


Abstract: 
This paper proposes a new multitarget constant modulus array structure for code division multiple access (CDMA) systems. The new algorithm for the structure is called pre-despreading and wavelet denoising constant modulus algorithm (D-WD-CMA). In the new algorithm, the pre-despreading is applied to multitarget arrays to remove some multiple access interferences. After that the received signal is subjected to wavelet de-noising to reduce some noise, and used in CMA adaptive iteration for signal separation. Simulation results showed that the proposed algorithm performed better than the traditional CMA algorithm.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

References

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[2] Cetin, K.K., Chen, G., Chui, C.K., 1994. Complexity analysis of wavelet signal decomposition and reconstruction. IEEE Trans on Aerospace and Electronic Systems, 30(3):910-918. 

[3] Chui, C.K., 1992. An Introduction to Wavelets, Academic Press, Boston, MA,:

[4] Hu, C.H., Li, G.H., Liu, T., 2004. The System Analysis and Design of MATLAB 6, (in Chinese), xWavelet Analysis. Press of Xidian University, Xian, China,:

[5] Kazubek, M., 2003. Wavelet domain image denoising by thresholding and Wiener filtering. IEEE Signal Processing Letters, 10(11):324-326. 

[6] Liu, S.M., Zhao, C.H., 2003. The LSCM algorithm and subspace approach for blind multiuser detection. Journal of China Institute of Communications, (in Chinese),24(5):129-133. 

[7] Paraschiv-Ionescu, A., Jutten, C., Aminian, K., 2002. Wavelet denoising for highly noisy source separation. , IEEE International Symposium on Circuits and Systems, I-201-I-204. :I-201-I-204. 

[8] Ranta, R., Heinrich, C., Louis-Dorr, V., Wolf, D., 2003. Interpretation and improvement of an iterative wavelet-based denoising method. IEEE Signal Processing Letters, 10(8):239-241. 

[9] Sardy, S., Tseng, P., Bruce, A., 2001. Robust wavelet denoising. IEEE Trans on Signal Processing, 49(6):1146-1152. 

[10] Zhu, M.H., Wu, H.L., Liu, Y.N., 2003. The application of the CMA Adaptive Array to CDMA Communication Systems. Chinese Journal of Electronics, (in Chinese),31(4):523-526. 


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