Hyun-Seok Oh

Synchronization Acquisition Methods for DRM Systems

In this paper, we report DRM receiver synchronization methods at the acquisition stage. Synchronization process consists of robustness mode detection, coarse symbol timing estimation, coarse fractional carrier frequency offset estimation, integer carrier frequency offset estimation, and frame timing estimation. These detection and estimation methods exploit the characteristics of DRM signal structure and pilot cells. Their performance is assessed by simulation with DRM full link simulator and verified with DRM hardware platform based on FPGA.

Synchronization Tracking Methods for DRM Systems

In this paper, we report DRM receiver synchronization methods at the tracking stage. The DRM synchronization tracking processes mainly include symbol timing offset estimation, fine fractional carrier frequency offset estimation, and sampling clock frequency offset estimation. All these estimation methods exploit the characteristics of DRM signal structure and gain reference cells inserted into the signal. Their performance is assessed by simulation with DRM full link-level simulator over different shortwave channel models and verified with DRM hardware platform based on FPGA. Both results demonstrate the robustness of the proposed tracking methods.