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Volume 23 Issue 10
Oct.  2001
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Li Chunguang, Liao Xiaofeng, Yu Juebang. BARRIER FUNCTION DESCENT DIRECTION METHOD FOR CDMA MULTI-USER DETECTION[J]. Journal of Electronics & Information Technology, 2001, 23(10): 1006-1013.
Citation: Li Chunguang, Liao Xiaofeng, Yu Juebang. BARRIER FUNCTION DESCENT DIRECTION METHOD FOR CDMA MULTI-USER DETECTION[J]. Journal of Electronics & Information Technology, 2001, 23(10): 1006-1013.

BARRIER FUNCTION DESCENT DIRECTION METHOD FOR CDMA MULTI-USER DETECTION

  • Received Date: 1999-08-16
  • Rev Recd Date: 2000-06-12
  • Publish Date: 2001-10-19
  • In this paper, A barrier function descent direction method for implementing CDMA multi-user detection (BMD) is proposed. As compared to conventional detectors and neural network optimal algorithms, the method derives a new descent direction from the barrier function other than the gradient direction. Numerical results show that the method is always able to find the global minimization point. It has many advantages featuring near-far effect resistance, able to suppressing multiple access interference and channel noise, etc. The method paves a new way for realizing optimal multi-user detection in CDMA system.
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  • S. Verdu, Optimum multiuser asymptotic efficiency, IEEE Trans. on Commun., 1986, COM-34(9),890-897.[2]S. Verdu, Computational complexity of multiuser detection, Algorithmica, 1989,:(3), 303-312.[3]M.K. Varanasi, B. Aazhang, Multistage detection in asynchronous code-division multiple access communications, IEEE Trans. on Commun., 1990, COM-38(4), 509-519.[4]A. Duel-Hallen, Decorrelating decision-feedback multiuser detection for synchronous code-division multiple-access channel, IEEE Trans. on Commun., 1993, COM-41(2), 285-290.[5]C. Schlegel, L. Wei, A simple way to compute the minimum distance in multiuser CDMA system, IEEE Trans. on Commun., 1997, COM-45(5), 532-535.[6]G. Woodward, B. S. Vucctic, Adaptive detection for DS-CDMA, Proc. of IEEE, 1998, 86(7),1413-1434.[7]B. Aazhang, B. Peter, Neural network for multiuser detection in CDMA communications, IEEE Trans. on Commun., 1992, COM-40(7), 1212-1222.[8]G.I. Kechriotis, E. S. Manolakos, Hopfield neural network implementation in the optimal CDMA multiuser detector, IEEE Trans. on Neural Networks, 1996, NN-7(1), 131 141.[9]唐普英,何桂清,一种实现最佳多用户检测的非线性优化神经网络,信号处理,1996,12(4),289-296.
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