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A SNR Estimation Algorithm for Digital Satellite Transponder  

Seo, Kwang-Nam (숭실대학교 정보통신전자공학부 무선통신시스템연구실)
Choi, Seung-Woon (한국 항공우주연구원)
Kim, Chong-Hoon (숭실대학교 정보통신전자공학부 무선통신시스템연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.35, no.9C, 2010 , pp. 729-734 More about this Journal
Abstract
In the initial stage of the communications between a base station and a satellite transponder, the base station transmits the frequency-sweeping un-modulated up-link carrier within a certain frequency range to acquire the doppler frequency shift and signal power between the base station and the satellite in orbital flight. The satellite transponder acquires and tracks the carrier in order to initialize the communication. To control such initialization process, the satellite receiver should analyze the input carrier signal in various ways. This paper presents an SNR estimation algorithm to control the initialization process. The proposed algorithm converts the input signal into the baseband polar coordinate representation and estimates the SNR via the statistics of the angular signal components as well as the status parameters to control the receiver. The Monte-Carlo simulations shows the validity of the estimation proposed.
Keywords
Satellite Transponder; SNR estimation; Carrier Recovery; CORDIC; Up-link/Down-link;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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