Sampling point selection scheme for fractional sampling-OFDM receivers on fast time-varying multipath channels

Tatsuya Kobayashi, Haruki Nishimura, Yukitoshi Sanada

    Research output: Contribution to journalArticle

    2 Citations (Scopus)

    Abstract

    Fractional sampling (FS) and Doppler diversity equalization in OFDM receivers can achieve two types of diversity (path diversity and frequency diversity) simultaneously on time-varying multipath channels. However FS with a higher sampling rate requires the large amount of complexity in demodulation. In this paper, a novel sampling point selection (SPS) scheme with MMSE equalization in FS-OFDM receivers is proposed. On fast time-varying multipath channels, the proposed scheme selects the appropriate samples from the fractionally sampled signals. Through the computer simulation, it is demonstrated that with the proposed scheme, both path diversity gain and Doppler diversity gain can increase as compared to a conventional non-SPS scheme.

    Original languageEnglish
    Pages (from-to)2122-2129
    Number of pages8
    JournalIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
    VolumeE93-A
    Issue number11
    DOIs
    Publication statusPublished - 2010 Nov

    Keywords

    • Doppler diversity
    • Fractional sampling
    • MMSE equalization
    • OFDM
    • Sampling point selection

    ASJC Scopus subject areas

    • Signal Processing
    • Computer Graphics and Computer-Aided Design
    • Electrical and Electronic Engineering
    • Applied Mathematics

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