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Title: On the variable capacity property of CC/DS-CDMA systems
Authors: Wang, LP
Yang, Y
Chen, HH
Song, YH
Keywords: Code division multiple access (CDMA);Complete complementary codes;Resource allocation
Issue Date: 2006
Publisher: IEEE
Citation: IEEE Transactions On Vehicular Technology. 55(3): 774-778, May 2006
Abstract: A complete complementary code based direct sequence code division multiple access (CC/DS-CDMA) system has been proposed recently as a potential candidate for beyond third generation (B3G) wireless communications. This paper addresses the issues that design of efficient code assignment schemes should be based on a flexible physical layer support, which is extremely important for emerging cross-layer designs in future wireless applications. The study in this paper considers a CC/DS-CDMA system with multiple time slots, three traffic classes and two dynamic code-flock assignment schemes, namely random assignment (RA) and compact assignment (CA). Simulation results show that the CC/DS-CDMA system has variable capacity property (VCP), which is sensitively affected by different code-flock assignment schemes. In general, CA can offer lower blocking probability, whereas RA can offer a larger mean system capacity and higher throughput when offered traffic is heavy.
Appears in Collections:Electronic and Computer Engineering
Dept of Electronic and Computer Engineering Research Papers

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