Frequency offset amplify-and-forward relay in OFDM system

Ayana Suzuki, Yukitoshi Sanada, Mamiko Inamori

    研究成果: Conference contribution

    抄録

    In the fourth generation mobile communication system, the frequency band higher than the bands already used for IMT-2000 has been assigned. However, the higher radio frequency increases the propagation loss. To cope with the propagation loss, relay transmission has been investigated. In this paper, a transmission diversity scheme with frequency offset in amplify-and-forward (AF) relaying is proposed. In this scheme, the frequency of the OFDM signal is shifted at the relay station. A different amount of frequency offset is given in each relay station and the signals from the relay stations are separated and combined by MMSE detection at the base station. The numerical results obtained through computer simulation show that diversity is realized and the BER performance is improved by 1-2 dB at the BER of 10 -2. When the number of the RSs increases, more BER improvement is achieved.

    本文言語English
    ホスト出版物のタイトル2011 the 14th International Symposium on Wireless Personal Multimedia Communications
    ホスト出版物のサブタイトルCommunications, Networking and Applications for the Internet of Things, WPMC'11
    出版ステータスPublished - 2011 12 21
    イベント2011 14th International Symposium on Wireless Personal Multimedia Communications: Communications, Networking and Applications for the Internet of Things, WPMC'11 - Brest, France
    継続期間: 2011 10 32011 10 7

    出版物シリーズ

    名前2011 the 14th International Symposium on Wireless Personal Multimedia Communications: Communications, Networking and Applications for the Internet of Things, WPMC'11

    Other

    Other2011 14th International Symposium on Wireless Personal Multimedia Communications: Communications, Networking and Applications for the Internet of Things, WPMC'11
    国/地域France
    CityBrest
    Period11/10/311/10/7

    ASJC Scopus subject areas

    • コンピュータ ネットワークおよび通信
    • コンピュータ サイエンスの応用
    • 人間とコンピュータの相互作用

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