부산대학교 도서관

We have been conducting research on an advanced digital terrestrial TV broadcasting system(advanced ISDB-T) that can transmit 4K/8K UHDTV content. The advanced ISDB-T has the segmented structure similar to ISDB-T. Therefore, advanced ISDB-T can provide both mobile reception service and fixed reception service using hierarchical transmission by frequency division multiplexing (FDM). Furthermore, the transmission capacity is increased by using a large-sized fast Fourier transform (FFT). Although large-sized FFT degrades speed tolerance in mobile reception, the advanced ISDB-T can mitigate this influence by selecting an appropriate scattered pilot (SP) pattern. In this paper, we analyze the influence of large-size FFT in mobile reception and evaluate the reception performance caused by differences in SP patterns through computer simulation and field experiments.