Combining of loop signals in frequency offset amplify-and-forward relay

Naoki Kikuchi, Mamiko Inamori, Yukitoshi Sanada

    研究成果: Conference contribution

    抄録

    The fourth generation mobile communication system is expected to be implemented on frequency bands higher than the bands already assigned for IMT-2000. Therefore, to compensate propagation loss, relay schemes have been investigated. Amplify-and-Forward (AF) relay has advantages in terms of lower complexity and time slot usage. However, the coupling effect causes the loop signal between transmit and receive antennas in the relay station and it can degrade the performance. Thus, in this research, a combining scheme of loop signals and original signals in the frequency offset AF relay scheme is proposed. It is shown that diversity gain and bit error rate (BER) performance vary according to the set of frequency offsets in the relays and modulation schemes. The system with 64 quadrature amplitude modulation (QAM) suffers from interference owing to frequency offsets.

    本文言語English
    ホスト出版物のタイトル2013 IEEE 77th Vehicular Technology Conference, VTC Spring 2013 - Proceedings
    DOI
    出版ステータスPublished - 2013 12 1
    イベント2013 IEEE 77th Vehicular Technology Conference, VTC Spring 2013 - Dresden, Germany
    継続期間: 2013 6 22013 6 5

    出版物シリーズ

    名前IEEE Vehicular Technology Conference
    ISSN(印刷版)1550-2252

    Other

    Other2013 IEEE 77th Vehicular Technology Conference, VTC Spring 2013
    国/地域Germany
    CityDresden
    Period13/6/213/6/5

    ASJC Scopus subject areas

    • コンピュータ サイエンスの応用
    • 電子工学および電気工学
    • 応用数学

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