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Synchronization Method and Link Level Performance of DMB System A considering HPA Nonlineariry  

Park SungHo (인하대학교 정보통신대학원 이동통신 연구실)
Cha Insuk (인하대학교 정보통신대학원 이동통신 연구실)
Chang KyungHi (인하대학교 정보통신대학원 이동통신 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.30, no.6A, 2005 , pp. 488-498 More about this Journal
Abstract
The DAB(Digital Audio Broadcasting) service which is based on the Eureka-147 of Europe is developed to DMB(Digital Multimedia Broadcasting) service that is divided into Terrestrial DMB and Satellite DMB. The Satellite DMB is a new broadcasting service, which will service multi-channel multimedia broadcasting by the portable receiver or the vehicle receiver. In this paper, we consider that link level performance of satellite DMB system A which is based on the COFDM(Coded Orthogonal Division Multiplexing). It uses the OFDM method which is sensitive to nonlinearity, so we analyze the effect of the HPA(High Power Amplifier) nonlinearity. And then we define the appropriate back-off value by performing the link level simulation considering back-off effect. Also we consider the effect of frequency and time offset, and then confirm the overall link level performance by analyzing and verifying a suitable synchronization method for satellite DMB system A.
Keywords
DMB; Satellite; OFDM; Nonlinearity; HPA; Synchronization;
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