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Implementation of Iterative Channel Equalization for MIMO Systems in WCDMA Downlink

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Title: Implementation of Iterative Channel Equalization for MIMO Systems in WCDMA Downlink
Author: Radosavljevic, Predrag; Cavallaro, Joseph R.; de Baynast, Alexandre
Type: Conference Paper
Keywords: MIMO; WCDMA; Downlink; Equalization; Conjugate Gradient; 1xEV-DV; fixed-point
Citation: P. Radosavljevic, J. R. Cavallaro and A. de Baynast,"Implementation of Iterative Channel Equalization for MIMO Systems in WCDMA Downlink," in IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP),
Abstract: In downlink transmission, channel multipaths destroy the orthogonality between users causing Multiple Access Interference (MAI). In order to restore the orthogonality between the users, chip-level channel equalization based on the iterative conjugate-gradient (CG) algorithm has been proposed in [Heikkilla '02]. We extend this approach to the multiple transmit antenna case and propose 16-bit fixed point implementation. Simulations show the robustness of the fixed point implementation of the proposed algorithm. Moreover, this approach outperforms RAKE receiver in all cases.
Date Published: 2003-10-20

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  • ECE Publications [1082 items]
    Publications by Rice University Electrical and Computer Engineering faculty and graduate students