Receiver synchronization for Digital Audio Broadcasting system based on Phase reference symbol

摘要

The Eureka-147 Digital Audio Broadcasting (DAB) system is a new digital radio technology for broadcasting radio stations that provides high-quality audio and data services to both fixed and mobile receivers and employs coded orthogonal frequency division multiplexing (COFDM) technology. In this paper, we present the efficient synchronization method based on Phase reference symbol (PRS) for the DAB signal at the receiver. Since DAB uses OFDM digital transmission technique, the synchronization block plays an important role in determining bit error rate (BER) performance of DAB system in different channels. The result shows that the synchronization method proposed locates precisely each DAB frame even at low signal to noise ratio (SNR), so that the demodulation can be performed frame by frame, symbol by symbol.