Title:
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Near-far resistant CML propagation delay estimation and multi-user detection for asynchronous DS-CDMA systems
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Author:
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Rey Micolau, Francesc; Vázquez Grau, Gregorio; Riba Sagarra, Jaume
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Other authors:
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Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. SPCOM - Grup de Recerca de Processament del Senyal i Comunicacions |
Abstract:
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Multi-user receivers in asynchronous direct sequence code division multiple access (DS-CDMA) systems require the knowledge of several parameters such as timing delay between users. The goal of this work is to present a near-far resistant joint multi-user synchronization and detection algorithm for DS-CDMA systems. The solution is based on the conditional maximum likelihood (CML) estimation method (classically used in the context of sensor array processing) that leads to a fast convergence algorithm to estimate the time delays among users. At the same time the estimator implements the decorrelating detector, identifying the transmitted symbols for the different users. |
Abstract:
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Peer Reviewed |
Subject(s):
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-Àrees temàtiques de la UPC::Enginyeria de la telecomunicació -Telecommunication -Convergence -Delay estimation -Code division multiple access -Spread spectrum communication -Synchronisation -Maximum likelihood detection -Maximum likelihood estimation -Multiuser channels -Decorrelation -Telecomunicació |
Rights:
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Document type:
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Article - Published version Conference Object |
Published by:
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Institute of Electrical and Electronics Engineers (IEEE)
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