Return link 2-D code acquisition for DS-CDMA in a high capacity multi-user system

Mark C. Reed*

*Corresponding author for this work

    Research output: Contribution to journalConference articlepeer-review

    4 Citations (Scopus)

    Abstract

    Acquisition of the code timing in a direct-sequence code-division multiple-access system with antenna arrays must take place before signal detection and decoding is possible. Code acquisition under severe multiple access interference conditions with time varying codes makes the task even more difficult and has been shown to limit the capacity of the system. This paper details a powerful code acquisition technique for the uplink of direct-sequence code-division multiple-access systems under high loaded situations, where the number of users is much larger than the spreading factor. The method discussed utilises soft data from the multi-user detector to reduce the interference received by the acquisition unit. Numerical and analytical performance are compared in terms of the probability of missed detection and the probability of false alarm is shown.

    Original languageEnglish
    Pages (from-to)1451-1455
    Number of pages5
    JournalIEEE Vehicular Technology Conference
    Volume59
    Issue number3
    Publication statusPublished - 2004
    Event2004 IEEE 59th Vehicular Technology Conference, VTC2004-Spring: Towards a Global Wireless World - Milan, Italy
    Duration: 17 May 200419 May 2004

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