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    Performance Analysis of a Power Limited Spectrum Sharing System with TAS/MRC

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    Type
    Article
    Authors
    Khan, Fahd Ahmed
    Tourki, Kamel
    Alouini, Mohamed-Slim cc
    Qaraqe, Khalid A.
    KAUST Department
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Electrical Engineering Program
    Communication Theory Lab
    Date
    2014-02
    Permanent link to this record
    http://hdl.handle.net/10754/563373
    
    Metadata
    Show full item record
    Abstract
    Capacity of the cognitive radio network degrades due to the interference constraint from the primary network. The secondary network capacity can be enhanced in a cost effective way by means of spatial diversity, that can be achieved by adding multiple antennas on the secondary network terminals and performing antenna selection. In this paper, the performance of a multiple-input multiple-output (MIMO) secondary link with transmit antenna selection (TAS) at the transmitter and maximum ratio combining (MRC) at the receiver is analyzed. A peak transmit power constraint at the secondary transmitter is considered in addition to the interference power constraint and two scenarios are considered; 1) the MIMO cognitive system with TAS/MRC (MCS-TM) does not experience interference from the primary network (denote by MCS-TM-NI), and 2) MCS-TM does experience interference from the primary network (denote by MCS-TM-WI). The performance of both MCS-TM-NI and MCS-TM-WI is analyzed and, for a Rayleigh faded channel, closed-form expression for the outage probability is derived. In addition, closed-form expressions of the moment generating function, the symbol error rate and the ergodic capacity are obtained for the MCS-TM-NI. Asymptotic performance analysis of the MCS-TM-NI reveals that TAS/MRC in a MIMO cognitive system achieves a generalized diversity gain equal to the product of the number of transmit and receive antennas. Numerical results are also presented to corroborate the derived analytical results. © 1991-2012 IEEE.
    Citation
    Khan, F. A., Tourki, K., Alouini, M.-S., & Qaraqe, K. A. (2014). Performance Analysis of a Power Limited Spectrum Sharing System With TAS/MRC. IEEE Transactions on Signal Processing, 62(4), 954–967. doi:10.1109/tsp.2013.2297684
    Sponsors
    This work was supported by NPRP under Grant NPRP 5-250-2-087 from the Qatar National Research Fund (a member of Qatar Foundation). The statements made herein are solely the responsibility of the authors. This work appeared in part in the Proceedings of the IEEE International Conference on Communications (ICC 2013), Budapest, Hungary, June 9-13, 2013.
    Publisher
    Institute of Electrical and Electronics Engineers (IEEE)
    Journal
    IEEE Transactions on Signal Processing
    DOI
    10.1109/TSP.2013.2297684
    ae974a485f413a2113503eed53cd6c53
    10.1109/TSP.2013.2297684
    Scopus Count
    Collections
    Articles; Electrical and Computer Engineering Program; Communication Theory Lab; Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division

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