Training sequence inserted OFDM transmission with MMSE-FDE

Tetsuya Yamamoto, Fumiyuki Adachi

    Research output: Contribution to journalArticlepeer-review

    1 Citation (Scopus)

    Abstract

    Orthogonal frequency division multiplexing (OFDM) has been attracting much attention because of its robustness against frequency selective fading. Instead of well-known cyclic prefix (CP) insertion, known training sequence (TS) insertion can be used for OFDM block transmission (called TS-OFDM). In this paper, we propose a new receiver design, which can obtain the frequency diversity gain through the use of frequencydomain equalization (FDE) for TS-OFDM. A conditional bit error rate (BER) analysis of the proposed FDE is presented. The average BER performance of the TS-OFDM signal transmission in a frequency-selective Rayleigh fading channel is evaluated by the Monte-Carlo numerical computation method using the derived conditional BER and is confirmed by computer simulation. Numerical and computer simulation results show the proposed TS-OFDM with FDE improves BER and throughput performance of TS-OFDM compared to the conventional TS-OFDM receiver due to the frequency diversity gain. It is also shown that the proposed TS-OFDM with FDE is more robust against imperfect channel estimation than the conventional TS-OFDM receiver.

    Original languageEnglish
    Pages (from-to)476-483
    Number of pages8
    JournalIEICE Transactions on Communications
    VolumeE97-B
    Issue number2
    DOIs
    Publication statusPublished - 2014

    Keywords

    • Frequency-domain equalization
    • OFDM
    • Training sequence

    ASJC Scopus subject areas

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

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