Inter-Group Complementary Codes for Interference-Resistant CDMA Wireless Communications
Inter-Group Complementary Codes for Interference-Resistant CDMA Wireless Communications
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DOI：
10.1109/twc.2008.060414
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发表时间：
2008
影响因子：
10.4
通讯作者：
Jing Li;Aiping Huang;M. Guizani;Hsiao-Hwa Chen
中科院分区：
文献类型：
--
作者：
Jing Li;Aiping Huang;M. Guizani;Hsiao-Hwa Chen
Spreading code plays an extremely important role on the overall performance of a CDMA system. The correlation properties and available number of spreading codes determine the interference-resist capability as well as system capacity. In this paper, we analyze the characteristics and limitations of traditional and recently reported spreading codes. Based on the analysis, we propose a new code design approach which will be used to generate inter-group complementary (IGC) codes. The correlation functions of the IGC codes possess definite and bi-valued interference-free windows. In addition, a corresponding code assignment algorithm and spreading scheme will be introduced to take advantage of the desirable properties of the IGC codes for their applications in CDMA systems. Both theoretical analysis and simulation results show that an IGC-CDMA system is interference-resistant and capable to offer a high spectral efficiency if compared with the ones based on other spreading codes.
