Abstract: Wideband code division multiple access (W-CDMA) system is adopted as the 3rd generation radio interface technology by 3rd generation partnership project (3GPP) [1]. In W-CDMA system, the orthogonal variable spreading factor (OVSF) code is the channelization code used for multiple accesses in the same slot as well as in the same cell. One of the most important characteristics of W-CDMA is the service flexibility, which can be supported by using OVSF codes for the channelization codes of the different users. In this paper, we propose hardware structure of W-CDMA frequency division duplex (FDD) and time division duplex (TDD) dual mode OVSF code generator using single code indexing method introduced in [2] with multi stage spreading scheme. The proposed algorithm has the advantages on memory size (reduce 98 %) and processing time (max. 32 %) compare to existing method.
Lee, J., Yang, S., Kim, S., & Kim, Y. (2008). OVSF code generator using single OVSF code index. The International Conference on Electrical Engineering, 6(6th International Conference on Electrical Engineering ICEENG 2008), 1-8. doi: 10.21608/iceeng.2008.34232
MLA
Jinyong Lee; Seongsu Yang; Soojin Kim; Younglok Kim. "OVSF code generator using single OVSF code index". The International Conference on Electrical Engineering, 6, 6th International Conference on Electrical Engineering ICEENG 2008, 2008, 1-8. doi: 10.21608/iceeng.2008.34232
HARVARD
Lee, J., Yang, S., Kim, S., Kim, Y. (2008). 'OVSF code generator using single OVSF code index', The International Conference on Electrical Engineering, 6(6th International Conference on Electrical Engineering ICEENG 2008), pp. 1-8. doi: 10.21608/iceeng.2008.34232
VANCOUVER
Lee, J., Yang, S., Kim, S., Kim, Y. OVSF code generator using single OVSF code index. The International Conference on Electrical Engineering, 2008; 6(6th International Conference on Electrical Engineering ICEENG 2008): 1-8. doi: 10.21608/iceeng.2008.34232
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