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    How much training is needed in fading multiple access channels?


    Scarlett, Jonathan and Evans, Jamie and Dey, Subhrakanti (2011) How much training is needed in fading multiple access channels? In: 2011 8th International Symposium on Wireless Communication Systems. IEEE, pp. 527-531. ISBN 9781612844039

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    Abstract

    We optimize the tradeoff between multiuser diversity and training overhead in a single antenna narrowband multiple access channel with a large number of users. A block fading model with independent Rayleigh gains is considered, in which training sequences are sent to the base station one at a time and the user estimated to be the strongest is scheduled to transmit. Considering a lower bound on the ergodic sum capacity with channel uncertainty under an average total power constraint, we optimize the proportion of time and power spent on training in each block. By analyzing the asymptotic behavior of the system as the block length grows large, we optimize the number of users considered for transmission in each block with respect to an approximate expression for the achievable rate, and find first order expressions for the resulting parameters.

    Item Type: Book Section
    Additional Information: Cite as: J. Scarlett, J. Evans and S. Dey, "How much training is needed in fading multiple access channels?," 2011 8th International Symposium on Wireless Communication Systems, 2011, pp. 527-531, doi: 10.1109/ISWCS.2011.6125414.
    Keywords: How much; training; fading multiple; access channels;
    Academic Unit: Faculty of Science and Engineering > Electronic Engineering
    Faculty of Science and Engineering > Research Institutes > Hamilton Institute
    Item ID: 14486
    Identification Number: https://doi.org/10.1109/ISWCS.2011.6125414
    Depositing User: Subhrakanti Dey
    Date Deposited: 01 Jun 2021 14:30
    Publisher: IEEE
    Refereed: Yes
    URI:

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