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Multistage linear multiuser receivers : large-system design and analysis

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Multistage linear multiuser receivers : large-system design and analysis

Ghotbi, Mohsen (2005) Multistage linear multiuser receivers : large-system design and analysis. PhD thesis, Concordia University.

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Abstract

This thesis introduces an analytical method for large-system design and analysis of multistage linear multiuser (MLMU) receivers for direct-sequence (DS-) code division multiple access (CDMA) systems. The figure of merit to evaluate performance is the signal to interference plus noise ratio (SINR) that is calculated for a case where the number of active users and the processing gain tend towards infinity, while their ratio remains finite. The large-system performance will be a function of the number of the interference cancellation stages, the moments of the eigenvalues of the covariance matrix, the system load and the SNR. Compared to other recently-proposed methods, our proposed method offers a more efficient approach to finding the large-system performance by introducing a new expression for the covariance matrix of the interference term. A simplified multistage scheme to estimate the multipath channel gains is also introduced. It will be shown that by applying this new method for data detection and channel estimation, the performance of the MLMU receiver will converge to that of the minimum mean-squared error (MMSE) receiver.

Divisions:Concordia University > Faculty of Engineering and Computer Science > Electrical and Computer Engineering
Item Type:Thesis (PhD)
Authors:Ghotbi, Mohsen
Pagination:xvii, 120 leaves : ill. ; 29 cm.
Institution:Concordia University
Degree Name:Ph. D.
Program:Electrical and Computer Engineering
Date:2005
Thesis Supervisor(s):Soleymani, M. Reza
ID Code:8566
Deposited By:Concordia University Libraries
Deposited On:18 Aug 2011 14:28
Last Modified:18 Aug 2011 14:28
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