Iterative overlap FDE for DS-CDMA without GI

Kazuaki Takeda, Hiromichi Tomeba, Fumiyuki Adachi

    研究成果: Conference contribution

    13 被引用数 (Scopus)

    抄録

    Frequency-domain equalization (FDE) based on minimum mean square error (MMSE) criterion can replace the conventional rake combining with significantly improved bit error rate (BER) performance for the downlink DS-CDMA in a frequency-selective fading channel. Recently, a new MMSE-FDE technique that requires no GI insertion has been proposed to avoid inter-block interference (IBI) (this technique is called overlap FDE). However, the residual IBI is produced and degrades the BER performance. Furthermore, the presence of an inter-chip interference (ICI) after MMSE-FDE limits the BER performance improvement. In this paper, we propose an iterative overlap FDE for DS-CDMA downlink to suppress both IBI and ICI. In the iterative overlap FDE, joint MMSE-FDE and ICI cancellation is repeated a sufficient number of times and the middle part of M chips is picked up. The BER performance with the iterative overlap FDE is evaluated by computer simulation.

    本文言語English
    ホスト出版物のタイトル2006 IEEE 64th Vehicular Technology Conference, VTC-2006 Fall
    ページ2038-2042
    ページ数5
    DOI
    出版ステータスPublished - 2006
    イベント2006 IEEE 64th Vehicular Technology Conference, VTC-2006 Fall - Montreal, QC, Canada
    継続期間: 2006 9月 252006 9月 28

    出版物シリーズ

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

    Other

    Other2006 IEEE 64th Vehicular Technology Conference, VTC-2006 Fall
    国/地域Canada
    CityMontreal, QC
    Period06/9/2506/9/28

    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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