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On APSK Modulation for DVB-S2: Efficient Trasmission Over Nonlinear Satellite Broadcasting Channels
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- 발행일
- 200704
- 출처
- AIAA International Communications Satellite Systems Conference (ICSSC) 2007, pp.1-8
- 협약과제
- 07MR3600, 21GHz대역 위성방송 전송기술개발, 장대익
- 초록
- New standards for satellite broadcasting systems are emerging for adaptive broadband transmission with increased bandwidth efficiency. The DVB-S2 (Digital Video Broadcasting - Satellite, Version 2) adopts the APSK (Amplitude Phase Shift Keying) modulation for enhanced performance over nonlinear channels. In this paper, BER (Bit Error Rate) performance of the APSK modulation combined with a nonlinear PA (Power Amplifier) model is evaluated by deriving analytic upper bounds. The result is used to determine optimal input power level minimizing the BER, and the performance comparison with the conventional QAM (Quadrature Amplitude Modulation) modulation is also given. © 2007 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.
- KSP 제안 키워드
- Bandwidth Efficiency, Bit Error Rate(And BER), Broadband transmission, Broadcasting system, DVB-S2, Digital video broadcasting, Input power, Optimal Input, Performance comparison, Power Levels, Quadrature-amplitude modulation(QAM)