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Convergence behaviours of an adaptive step-size constant modulus algorithm for DS-CDMA receivers

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2 Author(s)
Yuvapoositanon, Peerapol ; Dept. of Electron. Eng., Mahanakorn Univ. of Technol., Bangkok, Thailand ; Chambers, J.A.

A convergence analysis of the blind adaptive step-size constant modulus algorithm (AS-CMA) for direct-sequence code division multiple access (DS-CDMA) receivers is presented. Analytical results show similar convergence behaviours of the AS-CMA receiver and the adaptive step-size stochastic approximation (AS-SA) receiver. Simulations show that the blind AS-CMA algorithm performs comparably with the non-blind AS-SA in a Markovian type of nonstationary environment. The robustness of the proposed algorithm to different settings of the initial step-size is also shown.

Published in:

Circuits and Systems, 2003. ISCAS '03. Proceedings of the 2003 International Symposium on  (Volume:3 )

Date of Conference:

25-28 May 2003

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