한국정보통신설비학회:학술대회논문집

Korea Institute of Information and Telecommunication Facilities Engineering (한국정보통신설비학회)
권호 표지

Enhancement of ACPR and Noise level of Analog Optical Transmitter by Feedforward Compensation

피드포워드 보상회로를 적용한 아날로그 광 송신기의 ACPR과 잡음 레벨 개선

  • Lee, Joon-Jae (School of Electronic and Electrical Engineering, Chung-Ang University Microwave & Lightwave Telecommunication lab.) ;
  • Park, Sang-Hyun (School of Electronic and Electrical Engineering, Chung-Ang University Microwave & Lightwave Telecommunication lab.) ;
  • Yun, Young-Seol (School of Electronic and Electrical Engineering, Chung-Ang University Microwave & Lightwave Telecommunication lab.) ;
  • Choi, Young-Wan (School of Electronic and Electrical Engineering, Chung-Ang University Microwave & Lightwave Telecommunication lab.)
  • 이준재 (중앙대학교 전자전기공학부 전파.광파 통신 연구실) ;
  • 박상현 (중앙대학교 전자전기공학부 전파.광파 통신 연구실) ;
  • 윤영설 (중앙대학교 전자전기공학부 전파.광파 통신 연구실) ;
  • 최영완 (중앙대학교 전자전기공학부 전파.광파 통신 연구실)
  • Published : 2005.08.01
Download PDF
⟨ Previous Next ⟩

Abstract

The optical fiber micro-cellular system requires the high linearity that determines the quality and capacity of system. Hence, there is a need for improving the linearity in mobile communication system. In order to compensate dispersion-induced signal distortion, we fabricated the optical feedforward transmitter. The compared 3rd-IMD was enhanced by 38 dB for two-tone case and the Adjacent Channel Power Ratio was enhanced by 20 dB for W-CDMA 1 carrier and by 16 dB for W-CDMA 3 carriers. Also, the induced noise level was reduced.

Keywords