A complexity-reduced time alignment control in uplink dynamic parameter controlled OF/TDMA

Ryota Kimura, Ryuhei Funada, Hiroshi Harada, Shigeru Shimamoto

    Research output: Contribution to journalArticle

    Abstract

    We have been investigating an orthogonal frequency division multiple access (OFDMA) based cellular system that is called "dynamic parameter controlled orthogonal frequency and time division multiple access (DPC-OF/TDMA)" for the development of beyond third generation (B3G) mobile communication systems. Moreover, we have already proposed a time alignment control (TAC) to compensate propagation delays that induce a multiple-access interference (MAI) in the uplink OFDMA. However, that TAC includes a large amount of computations. This means that it is quite difficult for the OFDMA systems to implement TAC into volume-limited hardware devices such as field programmable gate array (FPGA). Thus, we propose a new complexity-reduced TAC (CRTAC) in this paper. CRTAC can be implemented into such devices easily. In this paper, we show some computer simulation results, and then evaluate the error rate performances of DPC-OF/TDMA employing CRTAC. Moreover, we also show the benefit of the reasonable level of the implementation complexity made by CRTAC.

    Original languageEnglish
    Pages (from-to)2196-2207
    Number of pages12
    JournalIEICE Transactions on Communications
    VolumeE89-B
    Issue number8
    DOIs
    Publication statusPublished - 2006 Aug

    Fingerprint

    Frequency division multiple access
    Time division multiple access
    Multiple access interference
    Mobile telecommunication systems
    Field programmable gate arrays (FPGA)
    Hardware
    Computer simulation

    Keywords

    • Complexity reduction
    • Dynamic parameter controlled orthogonal frequency and time division multiple access (DPC-OF/TDMA)
    • Orthogonal frequency division multiple access (OFDMA)
    • Propagation delay
    • Time alignment control
    • Timing synchronization

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering
    • Computer Networks and Communications

    Cite this

    A complexity-reduced time alignment control in uplink dynamic parameter controlled OF/TDMA. / Kimura, Ryota; Funada, Ryuhei; Harada, Hiroshi; Shimamoto, Shigeru.

    In: IEICE Transactions on Communications, Vol. E89-B, No. 8, 08.2006, p. 2196-2207.

    Research output: Contribution to journalArticle

    Kimura, Ryota ; Funada, Ryuhei ; Harada, Hiroshi ; Shimamoto, Shigeru. / A complexity-reduced time alignment control in uplink dynamic parameter controlled OF/TDMA. In: IEICE Transactions on Communications. 2006 ; Vol. E89-B, No. 8. pp. 2196-2207.
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