New code match strategy for wideband code division multiple access code tree management

Zong Kai Yang, Guang Ran Liu, Jian Hua He

    Research output: Contribution to journalArticlepeer-review

    1 Citation (Scopus)


    Orthogonal variable spreading factor channelization codes are widely used to provide variable data rates for supporting different bandwidth requirements in wideband code division multiple access (WCDMA) systems. A new code match scheme for WCDMA code tree management was proposed. The code match scheme is similar to the existing crowed-first scheme. When choosing a code for a user, the code match scheme only compares the one up layer of the allocated codes, unlike the crowed-first scheme which perhaps compares all up layers. So the operation of code match scheme is simple, and the average time delay is decreased by 5.1%. The simulation results also show that the code match strategy can decrease the average code blocking probability by 8.4%.

    Original languageEnglish
    Pages (from-to)265-269
    Number of pages5
    JournalJournal of Central South University of Technology
    Issue number3
    Publication statusPublished - Jun 2006


    • Code blocking probability
    • Code match strategy
    • Code placement strategy
    • Orthogonal variable spreading factor

    ASJC Scopus subject areas

    • Materials Science(all)
    • Mechanics of Materials
    • Mechanical Engineering


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