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http://dx.doi.org/10.7840/KICS.2012.37A.1.73

A High-Speed Synchronization Method Robust to the Effect of Initial SFO in DRM Systems  

Kwon, Ki-Won (전자부품연구원 모바일단말연구센터)
Cho, Yong-Soo (중앙대학교 디지털통신연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.37, no.1A, 2012 , pp. 73-81 More about this Journal
Abstract
In this paper, we propose a high-speed synchronization method for Digital Radio Mondiale (DRM) receivers. In order to satisfy the high-speed synchronization requirement of DRM receivers, the proposed method eliminate the initial sampling frequency synchronization process in conventional synchronization methods. In the proposed method, sampling frequency tracking is performed after integer frequency synchronization and frame synchronization. Different correlation algorithms are applied to detect the first frame of the Orthogonal Frequency Division Multiplexing (OFDM) demodulation symbol with sampling frequency offset (SFO). A frame detection algorithm that is robust to SFO is selected based on the performance analysis and simulation. Simulation results show that the proposed method reduces the time spent for initial sampling frequency synchronization even if SFO is present in the DRM signal. In addition, it is verify that inter-cell differential correlation used between reference cells is roubst to the effect of initial SFO.
Keywords
DRM; Frame Detector; SFO; Synchronization;
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