CDMA detection based on least-squares criterion

Authors:
Elessaid Sulaiman Saad
Affiliations:
Electrical and Computer Engineering Department, Karary University, Khartoum, Sudan
Venue:
MATERIALS'08 Proceedings of the 1st WSEAS international conference on Materials science
Year:
2008

Citing 2
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Fundamentals of statistical signal processing: estimation theory

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A constrained least squares approach to mobile positioning: algorithms and optimality

EURASIP Journal on Applied Signal Processing

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Abstract

In this paper the least squares problem of signal estimation is introduced. The Code-Division Multiple Access (CDMA) signal model is transformed into a least squares minimization form. Based on the solutions of the problem, different receiver structures are derived. Channel estimation using least-squares method is also considered. The NMSE is used as a performance measure for the estimator. The performance of the different receivers is analyzed over AWGN channel. Performance over flat fading channel is also considered with and without channel estimation. The proposed receiver is modified to accommodate detection over frequency-selective fading channels with a least-squares channel estimator block.