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    Low-Complexity Interference-Free Downlink Channel Assignment with Improved Performance in Coordinated Small Cells

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    Type
    Conference Paper
    Authors
    Radaydeh, Redha M.
    Zafar, Ammar cc
    Al-Qahtani, Fawaz S.
    Alouini, Mohamed-Slim cc
    KAUST Department
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Electrical Engineering Program
    Date
    2015-05
    Permanent link to this record
    http://hdl.handle.net/10754/577118
    
    Metadata
    Show full item record
    Abstract
    This paper proposes a low-complexity interference-free channel assignment scheme with improved desired downlink performance in coordinated multi-antenna small-coverage access points (APs) that employ the open-access control strategy. The adopted system treats the case when each user can be granted an access to one of the available channels at a time. Moreover, each receive terminal can suppress a limited number of resolvable interfering sources via its highly-correlated receive array. On the other hand, the operation of the deployed APs can be coordinated to serve active users, and the availability of multiple physical channels and the use of uncorrelated transmit antennas at each AP are exploited to improve the performance of supported users. The analysis provides new approaches to use the transmit antenna array at each AP, the multiple physical channels, the receive antenna array at each user in order to identify interference-free channels per each user, and then to select a downlink channel that provides the best possible improved performance. The event of concurrent interference-free channel identification by different users is also treated to further improve the desired link associated with the scheduled user. The analysis considers the practical scenario of imperfect identification of interference-free channel by an active user and/or the imperfectness in scheduling concurrent users requests on the same channel. The developed formulations can be used to study any performance metric and they are applicable for any statistical and geometric channel models. © 2015 IEEE.
    Publisher
    Institute of Electrical and Electronics Engineers (IEEE)
    Journal
    2015 IEEE 81st Vehicular Technology Conference (VTC Spring)
    Conference/Event name
    81st IEEE Vehicular Technology Conference, VTC Spring 2015
    DOI
    10.1109/VTCSpring.2015.7145922
    ae974a485f413a2113503eed53cd6c53
    10.1109/VTCSpring.2015.7145922
    Scopus Count
    Collections
    Conference Papers; Electrical Engineering Program; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

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