Optimal receiver filter for GFDM with timing and frequency offsets in uplink multiuser systems

Byungju Lim, Young Chai Ko

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    6 Citations (Scopus)

    Abstract

    In uplink multiuser systems, different timing offset (TO) and carrier frequency offset (CFO) of different users cause multiuser interference (MUI) to desired user. In this paper, we propose an optimal receiver filter for uplink transmission with generalized frequency division multiplexing (GFDM) when TO and CFO of different users exist. Proposed optimal receiver filter maximizes signal-to-interference ratio (SIR) of desired user with TO and CFO in Rayleigh channel. Based on SIR expression derived in closed form in the presence of TO and CFO, we obtain the optimal receiver filter by solving Rayleigh quotient problem. We show from the simulation that the proposed receiver filter effectively eliminates MUI caused by TO within cyclic prefix range and CFO compared to the conventional zero-forcing filter.

    Original languageEnglish
    Title of host publication2018 IEEE Wireless Communications and Networking Conference, WCNC 2018
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    Pages1-6
    Number of pages6
    ISBN (Electronic)9781538617342
    DOIs
    Publication statusPublished - 2018 Jun 8
    Event2018 IEEE Wireless Communications and Networking Conference, WCNC 2018 - Barcelona, Spain
    Duration: 2018 Apr 152018 Apr 18

    Publication series

    NameIEEE Wireless Communications and Networking Conference, WCNC
    Volume2018-April
    ISSN (Print)1525-3511

    Other

    Other2018 IEEE Wireless Communications and Networking Conference, WCNC 2018
    Country/TerritorySpain
    CityBarcelona
    Period18/4/1518/4/18

    Bibliographical note

    Funding Information:
    ACKNOWLEDGMENT This work was supported by Institute for Information & communications Technology Promotion(IITP) grant funded by the Korea government(MSIT) (2015-0-00300, Multiple Access Technique with Ultra-Low Latency and High Efficiency for Tactile Internet Services in IoT Environments).

    Publisher Copyright:
    © 2018 IEEE.

    Keywords

    • Carrier frequency offset
    • Filter design
    • GFDM
    • Interference cancellation
    • MUI
    • Multiuser
    • SIR
    • Timing offset

    ASJC Scopus subject areas

    • General Engineering

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