| A novel constant modulus array for multiuser detection |
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| 作者姓名： | 张继东 郑宝玉 傅洪亮 |
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| 作者单位： | Department of Electronic Engineering，Shanghai Jiaotong University，Shanghai 200030，China Bureau of Telecom Transmission Jiangsu，Nanjing 210003，China，Institute of Signal and Information Processing，Nanjing University of Posts and Telecommunications，Nanjing 210003，China，Department of Communication Engineering，Nanjing University of Posts and Telecommunications，Nanjing 210003，China |
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| 基金项目： | 国家自然科学基金，国家高技术研究发展计划(863计划) |
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| 摘 要： | 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 inter- ferences. After that the received signal is subjected to wavelet de-noising to reduce some noise, and used in CMA adaptive iteration …
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| 关 键 词： | 无线通信 CDMA 微波通信 噪音消除 运算法则 模数 |
A novel constant modulus array for multiuser detection |
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| Zhang Ji-dong,Zheng Bao-yu,Fu Hong-liang.A novel constant modulus array for multiuser detection[J].Journal of Zhejiang University Science,2005,6(1):38-42. |
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| Authors: | Zhang Ji-dong Zheng Bao-yu Fu Hong-liang |
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| Institution: | (1) Department of Electronic Engineering, Shanghai Jiaotong University, 200030 Shanghai, China;(2) Bureau of Telecom Transmission Jiangsu, 210003 Nanjing, China;(3) Institute of Signal and Information Processing, Nanjing University of Posts and Telecommunications, 210003 Nanjing, China;(4) Department of Communication Engineering, Nanjing University of Posts and Telecommunications, 210003 Nanjing, China |
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| 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. |
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| Keywords: | Constant modulus algorithm Adaptive array Wavelet de-noising Multiuser detection CDMA |
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