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An Multiple Access Interference Mitigation Technique Using Linearly Constrained Constant Modulus Algorithm in MC-CDMA Systems  

Kim, Dong-Joo (연세대학교 전기${\cdot}$전자공학과 정보통신 연구실)
Kim Joo-Eung (연세대학교 전기${\cdot}$전자공학과 정보통신 연구실)
Jung Sung-Soon (동양공업전문대학교 전자통신학과)
Hong Dae-Sik (연세대학교 전기${\cdot}$전자공학과 정보통신 연구실)
Kang Chang-Eon (연세대학교 전기${\cdot}$전자공학과 정보통신 연구실)
Abstract
In this paper, two interference suppression schemes (LCCMA, HIC) applied to the MC-CDMA system were proposed. The proposed schemes have advantages that it don't requires the other's spreading code and can be used even in mobile. The proposed HIC combines the proposed interference suppressor with PIC. Simulation is performed in various environments using the Monte Carlo method. Simulation results show that there is 1.4~3 times capacity increase in corresponding simulation environments. Also this scheme can take advantage of path diversity whereas the system using EGC, MRC, and PIC cannot. Therefore, as the number of path increase, a considerable performance improvement can be attained.
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