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Interference Suppression Based on Code Grouping and Groupwise Decorrelation in W-CDMA Downlink  

Ha, Won (고려대학교 전자컴퓨터공학과 무선통신시스템연구실)
Bae, Jung-Hwa (고려대학교 전자컴퓨터공학과 무선통신시스템연구실)
Lim, Byun-Chun (LG전자 정보통신사업본부)
Park, Jin-Woo (고려대학교 전자컴퓨터공학과 무선통신시스템연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.29, no.6A, 2004 , pp. 631-639 More about this Journal
Abstract
In this paper, we presented a new interference suppression method based on code grouping and groupwise decorrelation for multirate DS-CDMA downlink. The code grouping is accomplished according to the correlation property between the mother code and the child codes in OVSF code tree. Using groupwise decorrelation, the proposed receiver has relatively low computational complexity and does not require any information about interference users, such as code, data, and amplitude. From the simulation results in multipath channels, the proposed receiver is to provide significant performance enhancement.
Keywords
Groupwise Decorrelation; Interference Suppression; Code-Grouping; CDMA Downlink;
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