Abstract
Orthogonal Variable Spreading Factor (OVSF) codes are used in both UTRA-FDD and UTRA-TDD of the third-generation (3G) mobile communication systems. They can support multirate transmissions for mobile terminals with multicode transmission capabilities. In this paper, a new OVSF code assignment scheme, namely “Multicode Multirate Compact Assignment” (MMCA), is proposed and analyzed. The design of MMCA is based on the concept of “compact index” and takes into consideration mobile terminals with different multicode transmission capabilities and Quality of Service (QoS) requirements. Specifically, priority differentiation between multirate realtime traffic and best-effort data traffic is supported in MMCA. Analytical and simulation results show that MMCA is efficient and fair.
This work was supported in part by the Hong Kong Research Grants Council under Grant CUHK 4325/02E and the Short Term Research Fellowship programme of British Telecommunications (BT).
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Yang, Y., Yum, TS.P. (2004). Multicode Multirate Compact Assignment of OVSF Codes for QoS Differentiated Terminals. In: Niemegeers, I., de Groot, S.H. (eds) Personal Wireless Communications. PWC 2004. Lecture Notes in Computer Science, vol 3260. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-30199-8_30
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DOI: https://doi.org/10.1007/978-3-540-30199-8_30
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