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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Project supported by the National Natural Science Foundation of China (No. 60372107) and the Hi-Tech Research and Development Program (863) of China (No. 2002AA121068)
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Ji-dong, Z., Bao-yu, Z. & Hong-liang, F. A novel constant modulus array for multiuser detection. J. Zheijang Univ.-Sci. A 6, 38–42 (2005). https://doi.org/10.1631/BF02842475
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DOI: https://doi.org/10.1631/BF02842475