2-Step maximum likelihood channel estimation for multicode DS-CDMA with frequency-domain equalization

Yohei Kojima, Kazuaki Takeda, Fumiyuki Adachi

    研究成果: Article査読

    2 被引用数 (Scopus)

    抄録

    Frequency-domain equalization (FDE) based on the minimum mean square error (MMSE) criterion can provide better downlink bit error rate (BER) performance of direct sequence code division multiple access (DS-CDMA) than the conventional rake combining in a frequency-selective fading channel. FDE requires accurate channel estimation. In this paper, we propose a new 2-step maximum likelihood channel estimation (MLCE) for DS-CDMA with FDE in a very slow frequency-selective fading environment. The 1st step uses the conventional pilot-assisted MMSE-CE and the 2nd step carries out the MLCE using decision feedback from the 1st step. The BER performance improvement achieved by 2-step MLCE over pilot assisted MMSE-CE is confirmed by computer simulation.

    本文言語English
    ページ(範囲)2065-2071
    ページ数7
    ジャーナルIEICE Transactions on Communications
    E92-B
    6
    DOI
    出版ステータスPublished - 2009 6月

    ASJC Scopus subject areas

    • ソフトウェア
    • 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

    フィンガープリント

    「2-Step maximum likelihood channel estimation for multicode DS-CDMA with frequency-domain equalization」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

    引用スタイル