2005•Unpublished venueRequires access

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

Sungho Park, Cha Insuk, Chang KyungHi

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.

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Key concepts: Digital multimedia broadcasting, Digital audio broadcasting, Digital Video Broadcasting, Orthogonal frequency-division multiplexing, Computer science, Synchronization (alternating current), Broadcasting (networking), Digital broadcasting