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Interference Cancellation Using a Modified Transmitter and Partial Rake Combining for UWB Communication Systems  

Han Seung-youp (연세대학교 전기전자공학과 정보통신 연구실)
Woo Choong-chae (연세대학교 전기전자공학과 정보통신 연구실)
Lee Jae-gu (연세대학교 전기전자공학과 정보통신 연구실)
Hong Dae-sik (연세대학교 전기전자공학과 정보통신 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.31, no.1C, 2006 , pp. 102-108 More about this Journal
Abstract
In this paper, we propose an interference cancellation(IC) scheme using a partial Rake(PRAKE) combining in ultra-wideband(UWB) multipath fading channels. In this IC scheme, differently from the conventional transmitter model, which employs a guard interval between each frame, the guard interval is employed between each slot for estimating the multiple access interference(MAI). The UWB systems using the proposed IC scheme have little performance degradation without regard to the number of user, while the conventional UWB systems have a significant performance degradation according to the number of user. In order to reduce the receiver complexity, the PRAKE combining of post-canceled signal and the partial user IC scheme are also proposed.
Keywords
UWB; Interference-cancellation; PRAKE; ISI; MAI;
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