Channel estimation scheme for a RAKE receiver with fractional sampling in IEEE802.11b WLAN system

Yu Imaoka, Hiroshi Obata, Yohei Suzuki, Yukitoshi Sanada

    Research output: Contribution to journalArticle

    Abstract

    The IEEE802.11b WLAN standard employs directsequence/spread-spectrum (DS/SS) modulation. With a fractional sampling RAKE receiver, it is possible to achieve diversity and reduce the BER in DS/SS communication. In order to realize the diversity through fractional sampling, the impulse response of the channel must be estimated. In this paper, a channel estimation scheme for a RAKE receiver with fractional sampling in IEEE802.11b WLAN system is investigated through a computer simulation and an experiment. In order to estimate the impulse response of the channel, a pseudo-inverse matrix with a threshold is employed. Numerical results indicate that the channel can be estimated with an optimum threshold in both the simulation and the experiment.

    Original languageEnglish
    Pages (from-to)946-953
    Number of pages8
    JournalIEICE Transactions on Communications
    VolumeE92-B
    Issue number3
    DOIs
    Publication statusPublished - 2009 Mar

    Keywords

    • Channel estimation
    • DS/SS
    • Fractional sampling
    • IEEE802.11b
    • Pseudo-inverse matrix

    ASJC Scopus subject areas

    • Software
    • Computer Networks and Communications
    • Electrical and Electronic Engineering

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