한국전자파학회:학술대회논문집 (Proceedings of the Korea Electromagnetic Engineering Society Conference)
- 한국전자파학회 2003년도 종합학술발표회 논문집 Vol.13 No.1
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- Pages.649-659
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- 2003
OFDM/FH 시스템에서 위상잡음과 비선형 HPA의 특성분석
Analysis of Phase Noise and HPA Non-linearity in the OFDM/FH Communication System
- 이영선 (충북대학교 전자공학과 전자통신연구실)
- Li, Ying-Shan (Electronic Communication Laboratory, Department of Electronic Engineering, Chungbuk National University)
- 발행 : 2003.11.15
초록
OFDM/FH communication system Is widely used in the wireless communication for the large capacity and high-speed data transmission. However, phase noise and PAPR (peak-to-average power ratio) are the serious problems causing performance impairment. In this paper, PLL (phase locked loop) frequency synthesizer with high switching speed is used for the phase noise model. SSPA and TWTA are considered for the nonlinear HPA model. Under these conditions and by approximating