Joint frequency-domain equalization and antenna diversity combining for orthogonal multicode DS-CDMA signal transmissions in a frequency-selective fading channel

Takeshi Itagaki, Fumiyuki Adachi

    Research output: Contribution to journalArticlepeer-review

    10 Citations (Scopus)

    Abstract

    Orthogonal multicode direct sequence code division multiple access (DS-CDMA) has the flexibility in offering various data rate services. However, in a frequency-selective fading channel, the bit error rate (BER) performance is severely degraded since the othogonality among spreading codes is partially lost. In this paper, we apply frequency-domain equalization and antenna diversity combining, used in multi-carrier CDMA (MC-CDMA), to orthogonal multicode DS-CDMA in order to restore the code othogonality while achieving frequency and antenna diversity effect. It is found by computer simulations that the joint use of frequency-domain equalization and antenna diversity combining can significantly improve the BER performance of orthogonal multicode DS-CDMA in a frequency-selective fading channel.

    Original languageEnglish
    Pages (from-to)1954-1963
    Number of pages10
    JournalIEICE Transactions on Communications
    VolumeE87-B
    Issue number7
    Publication statusPublished - 2004 Jul

    Keywords

    • Antenna diversity
    • Frequency-domain equalization
    • Frequency-selective fading
    • Multicode DS-CDMA

    ASJC Scopus subject areas

    • Software
    • Computer Networks and Communications
    • Electrical and Electronic Engineering

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