Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)
- 2003.11c
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- Pages.297-301
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- 2003
Performance analysis of Binary Clipping PW-CDMA against non-linear distortion over Flat fading Channel
Flat 페이딩 채널환경에서 비선형 왜곡에 대한 Binary Clipping PW-CDMA 성능 분석
Abstract
The binary clipping PW/CDMA system is considered. This system can be constructed with effective cost. leading to reduce the influence of the non-linear amplifier because of converting multi-level signals into constant envelope signals. In addition, the clipping method which is to clip out signal amplitude at some level when multi-level signals are converted into constant envelope signals is used. The multi-level signals are clipped at 1 and -1 to limit the extension of bandwidth and to maintain the bandwidth after clipping. In this paper, the performance of the binary clipping PW/CDMA system with the non-linear amplifier analyzed by simulation over AWGN and flat fading channels respectively. The binary clipping PW/CDMA system with the non-linear amplifier is 2.2dB and 0.9dB better than conventional DS/CDMA system over the flat fading channels when the number of users are 9 and 17 respectively.
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