This paper aims at solving the problem of channel quality deterioration due to the reduced D/U and C/N by the rain attenuation. A method is proposed to improve the control accuracy in the transmission power control method. In the proposed method, the feedback-loop control is applied to control the traffic earth station, and the set-back closed-loop control is applied to the control of the reference earth station. The site diversity is employed in the reference earth station, and the reference of the transmission power control is determined independently of the TDMA synchronization reference. It is verified as a result of computer simulation and RF set-back experiment for the proposed method that the control error for the reference earth station in Ku and Ka bands is within ±2.5 dB, and the control error for the traffic earth station is within ±2.0 dB, which is an excellent performance. The proposed method is applied to the actual system, and an excellent performance is obtained in the control through a satellite.
|Number of pages||11|
|Journal||Electronics and Communications in Japan, Part I: Communications (English translation of Denshi Tsushin Gakkai Ronbunshi)|
|Publication status||Published - 1994 Aug|
ASJC Scopus subject areas
- Computer Networks and Communications
- Electrical and Electronic Engineering