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Implementation Factors for Multi-rate Parallel Interference Cancellation in the IMT-2000 3GPP System  

김진겸 (아주대학교 전자공학부)
오성근 (아주대학교 전자공학부)
선우명훈 (아주대학교 전자공학부)
김성락 (한국전자통신연구원 이동통신연구원)
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Abstract
We investigate some implementation factors that affect the performance of multi-rate parallel interference cancellers (PICs) for the international mobile telecommunications-2000 (IMT-2000) 3rd-generation partnership project (3GPP) system. We consider the simple multi-rate PIC [1,2] that can remove effectively multiple access interference (MAI) through block-based detection and sample-based cancellation in asynchronous user environments. The PIC structure has significantly lower complexity as compared with that of the existing scheme, especially as the number of users increases. We analyze the effects of timing error, oversampling rate, unsynchronized users and/or outer-cell interference, and the number of Quantization bits on the PIE performance through extensive computer simulations. The models for such factors and the optimum parameters are drawn. Finally, we evaluate the receiver complexities of the PIC receivers employing using the advanced removal scheme.
Keywords
Implementation Factors; Multi-rate PIC; Camplexity; IMT-2000; 3GPP System;
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