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Hardware Design of SNR Estimator for Adaptive Satellite Transmission System  

Lee, Jae-Ung (하이닉스반도체)
Kim, Soo-Seong (광전자 주식회사 FAB기술부)
Park, Eun-Woo (삼성전자 반도체총괄)
Im, Chae-Yong (GM대우 자동차)
Yeo, Sung-Moon (전북대학교 전자정보공학부 디지털통신시스템 연구실)
Kim, Soo-Young (전북대학교 전자정보공학부 디지털통신시스템 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.33, no.2A, 2008 , pp. 148-158 More about this Journal
Abstract
This paper proposes an efficient signal to noise ratio (SNR) estimation algorithm and its hardware implementation for adaptive transmission system using M-ary modulation scheme. In this paper, we present the implementation results of the proposed algorithm for the second generation digital video broadcasting via satellite (DVB-S2) system, and the proposed algorithm can be tailored to the other communication systems using adaptive transmissions. We built a look-up table (LUT) using the theoretical background of the received signal distribution, and by using this LUT we need just two comparators and a counter for the hardware implementation. For this reason, the hardware of the proposed scheme produces accurate estimation results even with extremely low complexity. The simulation results investigated in this paper reveal that the proposed method can produce estimation results within the specified SNR range in the DVB-S2 system, and it requires a few hundreds of samples for average estimation error of about 1 dB.
Keywords
DVB-S2; Signal to noise ratio estimation; Adaptive transmission; M-ary modulation;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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