Closed-form BER expression for OFDM with pilot-assisted channel estimation in a nonlinear multipath fading channel

Amir Ligata, Miha Smolnikar, Mihael Mohorcic, Haris Gacanin, Fumiyuki Adachi

    研究成果: Conference contribution

    2 被引用数 (Scopus)

    抄録

    Orthogonal frequency division multiplexing (OFDM) system with frequency domain equalization (FDE) requires reliable channel estimation (CE). OFDM has a problem of high peak-to-average power ratio (PAPR), which makes it very sensitive to nonlinear distortions, affecting the channel estimation accuracy. In this paper, we investigate the effect of the nonlinearity to the the OFDM system with pilot-assisted CE based on time or frequency division multiplexed (TDM/FDM) pilot. A closed-form bit error rate (BER) expressions for OFDM system are derived in a nonlinear and frequency-selective fading channel. The analysis is based on the Gaussian approximation of the nonlinear noise, which is also confirmed by computer simulation. Our results in terms of BER and mean square error (MSE) show, that FDM-pilot based CE is more sensitive to nonlinear distortions as compared to CE based on TDM-pilot.

    本文言語English
    ホスト出版物のタイトル12th IEEE International Conference on Communication Systems 2010, ICCS 2010
    ページ441-445
    ページ数5
    DOI
    出版ステータスPublished - 2010
    イベント12th IEEE International Conference on Communication Systems 2010, ICCS 2010 - Singapore, Singapore
    継続期間: 2010 11月 172010 11月 19

    出版物シリーズ

    名前12th IEEE International Conference on Communication Systems 2010, ICCS 2010

    Other

    Other12th IEEE International Conference on Communication Systems 2010, ICCS 2010
    国/地域Singapore
    CitySingapore
    Period10/11/1710/11/19

    ASJC Scopus subject areas

    • コンピュータ ネットワークおよび通信
    • 電子工学および電気工学

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