Adaptive modulation scheme for spatially correlated OFDM with time shifted sampling

Refik Caglar Kizilirmak, Yukitoshi Sanada

    研究成果: Conference contribution

    1 被引用数 (Scopus)

    抄録

    In this report, an adaptive modulated orthogonal frequency division multiplexing (OFDM) scheme that provides efficient data transmission for correlated receiver antenna arrays is proposed. Previously reported adaptive modulation schemes generally select the modulation scheme based on the estimated carrier-to-noise ratio (CNR) on each subcarrier. However, in antenna array communication in addition to the CNR, the spatial fading correlation should also be considered to evaluate the system performance. Especially, when the Time Shifted Sampling (TSS) technique is applied which overcomes the spatial correlation for some subchannels of an OFDM symbol, the spatial correlation varies dramatically through subcarriers. In this work, modulation scheme is selected based on the CNR and the spatial correlation coefficient for each subcarrier when the TSS technique is employed at the receiver. Numerical results through computer simulation show that the proposed scheme outperforms the conventional systems in achieving a target BER and establishing reliable communication while having almost the same transmission rate.

    本文言語English
    ホスト出版物のタイトル2010 IEEE 21st International Symposium on Personal Indoor and Mobile Radio Communications, PIMRC 2010
    ページ151-155
    ページ数5
    DOI
    出版ステータスPublished - 2010 12 1
    イベント2010 IEEE 21st International Symposium on Personal Indoor and Mobile Radio Communications, PIMRC 2010 - Istanbul, Turkey
    継続期間: 2010 9 262010 9 30

    出版物シリーズ

    名前IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC

    Other

    Other2010 IEEE 21st International Symposium on Personal Indoor and Mobile Radio Communications, PIMRC 2010
    国/地域Turkey
    CityIstanbul
    Period10/9/2610/9/30

    ASJC Scopus subject areas

    • 電子工学および電気工学

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