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Adaptive Power Techniques for Blind Channel Estimation in CDMA Systems

Abstract : The problem of blind adaptive channel estimation in code-division multiple access systems is considered. Motivated by the iterative power method, used in Numerical Analysis for estimating singular values and singular vectors, we develop RLS and LMS subspace based adaptive algorithms in order to identify the impulse response of the multipath channel. The schemes proposed in this paper use only the spreading code of the user of interest and the received data and are therefore blind. Both versions (RLS and LMS) exhibit rapid convergence combined with low computational complexity. With the help of simulations we demonstrate the improved performance of our methods as compared to the already existing techniques in the literature.
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Submitted on : Tuesday, May 23, 2006 - 6:17:33 PM
Last modification on : Tuesday, June 15, 2021 - 4:13:46 PM
Long-term archiving on: : Tuesday, February 22, 2011 - 11:58:49 AM


  • HAL Id : inria-00071616, version 1


Xenofon Doukopoulos, George Moustakides. Adaptive Power Techniques for Blind Channel Estimation in CDMA Systems. [Research Report] RR-4963, INRIA. 2003. ⟨inria-00071616⟩



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