Efficient Frame Synchronization Detector and Low Complexity Automatic Gain Controller for DVB-S2

효율적인 디지털 위성 방송 프레임 동기 검출 회로 및 낮은 복잡도의 자동 이득 제어 회로

  • Published : 2009.02.25

Abstract

This paper presents an efficient frame synchronization strategy with the identification of modulation type for Digital Video Broadcasting-Satellite second generation (DVB-S2). To detect the Start Of Frame (SOF) and identify a modulation mode at low SNR, we propose a new correlator structure and a low complexity Automatic Gain Controller (AGC). The proposed frame synchronization architecture can reduce about 93% multipliers and 89% adders compared with the direct implementation of the Differential - Generalized Post Detection Integration (D-GPDI) algorithm which is very complex and the proposed a low complexity AGC consists of only 5 multipliers and 3 adders. The proposed architecture has been thoroughly verified on the Xilinx Virtex II FPGA board.

본 논문은 위성방송 표준인 DVB-S2 (Digital Video Broadcasting-Satellite second generation) 에 적용 가능한 효율적인 변조모드 추정 가능한 프레임 동기 검출 회로를 제안한다. 매우 낮은 SNR에서 SOF (Start Of Frame)를 검출하고 변조 모드를 추정하기 위해 본 논문에서는 새로운 상관기 방식의 프레임 동기 검출 회로 구조와 낮은 복잡도의 AGC (Automatic Gain Controller)를 제안한다. 제안한 프레임 동기 검출 회로는 복잡도가 높은 기존의 D-GPDI (Differential - Generalized Post Detection Integration) 알고리즘을 직접 구현한 방식과 비교하여 약 93%의 곱셈기 개수와 89%의 덧셈기 개수를 줄일 수 있었으며 Xilinx Virtex II FPGA 검증 보드를 이용하여 제안된 구조를 검증하였다.

Keywords

References

  1. Digital video broadcasting (DVB); Framing structure, charmel coding and modulation for 11/12 GHz satellite services, EN300 421 (Vl.1.2), European Telecommunications Standards Institute (ETSI), 1997
  2. Digital video broadcasting (DVB); Second Generation framing Structure Charmel Coding and Modulation System for Broadcasting, Interative Service, News Gathering and other broadband satellite application, EN302 307 (Vl. 1. 1), European Telecommunications Standards Institute (ETSI), June 2004
  3. Digital video broadcasting (DVB); User guidelines for the second generation system for broadcasting, interactive services, news gathering and other broad-band satellite applications (DVB-S2), European Telecommunications Standards Institute (ETSI), TR 102 376, 2005
  4. Pansoo Kim et al., 'Enhanced Frame synchronization for DVB-S2 system under a large of frequency offset,' IEEE WCNC (Wireless Communications and Networking), vol. 1, Issue. 1, pp. 1183-1187, Mar. 2007 https://doi.org/10.1109/WCNC.2007.224
  5. Giovanni E. Corazza, Raffaella Pedone, and Marco Villanti, 'Frame Acquisition for Continious and Discontinous Transmission in the Forward Link of Ka-band Satellite Systems,' 6th Europ. Workshop on Mob/Pers. Satcoms, EMPS 2004, and 2nd Advanced Sat. Mob. Systems Conf, ASMS 2004, Noordwijk, The Netherlands, 21-22 Sep., 2004
  6. G. Albertazzi, S. Cioni, G.E. Corazza, N. De Laurentiis, M. Neri, P. Salmi, and A. Vanelli-Coralli, 'Adaptive Coding and Modulation Techniques for Future Ka Band Satellite Systems - Part I: Forward Link,' 10th Ka and Broadband Communications Conference, 2004