통신용 송신기의 디지털 Pre-distorter

Digital Pre-distorter for Communication Transmitters

  • 한동석 (경북대학교 공과대학 전자전기공학부) ;
  • 김용정김대진김창주 (경북대학교 공과대학 전자전기공학부 전남대학교 공과대학 전자공학과 한국전자통신연구원 무선방송연구소)
  • 발행 : 1998.10.01

초록

The high power amplifier (HPA) for broadcasting transmitter systems has nonlinear property in terms of input signal power. Hence, it produces AM/AM and AM/PM modulation to the modulated signal. Therefore, the non-linearity results in bandwidth expansion and nonlinear distortion to in-band signal. In this paper, we propose a simple sain-based predistorter that requires less computational burden and less time for the full initialization of the pre-distorter ROM table.

키워드