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    Adaptive rate transmission for spectrum sharing system with quantized channel state information

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    Type
    Conference Paper
    Authors
    Abdallah, Mohamed M.
    Salem, Ahmed H.
    Alouini, Mohamed-Slim cc
    Qaraqe, Khalid A.
    KAUST Department
    Communication Theory Lab
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Electrical Engineering Program
    Physical Science and Engineering (PSE) Division
    Date
    2011-03
    Permanent link to this record
    http://hdl.handle.net/10754/564365
    
    Metadata
    Show full item record
    Abstract
    The capacity of a secondary link in spectrum sharing systems has been recently investigated in fading environments. In particular, the secondary transmitter is allowed to adapt its power and rate to maximize its capacity subject to the constraint of maximum interference level allowed at the primary receiver. In most of the literature, it was assumed that estimates of the channel state information (CSI) of the secondary link and the interference level are made available at the secondary transmitter via an infinite-resolution feedback links between the secondary/primary receivers and the secondary transmitter. However, the assumption of having infinite resolution feedback links is not always practical as it requires an excessive amount of bandwidth. In this paper we develop a framework for optimizing the performance of the secondary link in terms of the average spectral efficiency assuming quantized CSI available at the secondary transmitter. We develop a computationally efficient algorithm for optimally quantizing the CSI and finding the optimal power and rate employed at the cognitive transmitter for each quantized CSI level so as to maximize the average spectral efficiency. Our results give the number of bits required to represent the CSI sufficient to achieve almost the maximum average spectral efficiency attained using full knowledge of the CSI for Rayleigh fading channels. © 2011 IEEE.
    Citation
    Abdallah, M., Salem, A., Alouini, M.-S., & Qaraqe, K. A. (2011). Adaptive rate transmission for spectrum sharing system with quantized channel state information. 2011 45th Annual Conference on Information Sciences and Systems. doi:10.1109/ciss.2011.5766156
    Publisher
    Institute of Electrical and Electronics Engineers (IEEE)
    Journal
    2011 45th Annual Conference on Information Sciences and Systems
    Conference/Event name
    2011 45th Annual Conference on Information Sciences and Systems, CISS 2011
    ISBN
    9781424498475
    DOI
    10.1109/CISS.2011.5766156
    ae974a485f413a2113503eed53cd6c53
    10.1109/CISS.2011.5766156
    Scopus Count
    Collections
    Conference Papers; Physical Science and Engineering (PSE) Division; Electrical and Computer Engineering Program; Communication Theory Lab; Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division

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