Throughput performance of adaptive frequency offset selection for amplify-and-forward relay in multiuser environment

Takayuki Shiba, Yukitoshi Sanada

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

    Abstract

    This paper proposes an adaptive frequency offset scheme in an amplify-and-forward (AF) relay station (RS). When the RSs are at a cell edge, frequency resources are partially assigned between them and a base station (BS) to avoid inter-cell interference. On the other hand, the RS is expected to use a higher frequency band for transmission in the next generation mobile communication system. The whole frequency band can be used in the transmission between the RS and a mobile station (MS) while the RS uses only the restricted bandwidth in the low frequency band. In the proposed AF relay scheme, the frequency of the signal from the RS is shifted adaptively in accordance with the frequency response of the channel between the RS and the MS. In this scheme, the relay transmission is assumed to use a wider bandwidth between the RS and the MS than that between the BS and the RS. By making use of the better frequency response between the RS and the BS owing to the adaptive frequency offset scheme the total throughput of the cell improves. It is shown with numerical results obtained through computer simulation that for a two-user case the proposed scheme improves the total throughput by about 1.2 to 1.3 times with proportional fairness scheduling especially at a low Eb/N0 condition.

    Original languageEnglish
    Title of host publication2018 IEEE 87th Vehicular Technology Conference, VTC Spring 2018 - Proceedings
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    Pages1-5
    Number of pages5
    Volume2018-June
    ISBN (Electronic)9781538663554
    DOIs
    Publication statusPublished - 2018 Jul 20
    Event87th IEEE Vehicular Technology Conference, VTC Spring 2018 - Porto, Portugal
    Duration: 2018 Jun 32018 Jun 6

    Other

    Other87th IEEE Vehicular Technology Conference, VTC Spring 2018
    CountryPortugal
    CityPorto
    Period18/6/318/6/6

    ASJC Scopus subject areas

    • Computer Science Applications
    • Electrical and Electronic Engineering
    • Applied Mathematics

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  • Cite this

    Shiba, T., & Sanada, Y. (2018). Throughput performance of adaptive frequency offset selection for amplify-and-forward relay in multiuser environment. In 2018 IEEE 87th Vehicular Technology Conference, VTC Spring 2018 - Proceedings (Vol. 2018-June, pp. 1-5). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/VTCSpring.2018.8417824