DVBT2 Receiver: Impact of FFT Window Positioning on Radio Coverage In modern digital terrestrial broadcasting systems, Single Frequency Network (SFN) is a prominent technique used for improved spectrum efficiency, network gain, and increased flexibility. In an SFN, the placement and positioning of FFT window relative to the multiple received signals strongly affect the receiveru0027s behavior of handling InterSymbol Interference (ISI). Thus, the treatment of ISI in receiver further impacts on the radio coverage predictions and network planning. In this paper, the radio coverage due to a typical SFN network is evaluated and analyzed for different FFT window synchronization methods. This is repeated for different transmission and reception modes used in the next generation of broadcasting standards and systems specifically in the DVBT2 system.

Mobile Performance of Next Generation Japanese Terrestrial Broadcasting Research into the possibility of a next generation Japanese terrestrial broadcasting system is underway in Japan. As part of that effort, a system based on frequency division multiplexing (FDM) as used in ISDBT has been created. Multiple layers can be transmitted at the same time using different frequency divisions known as segments, such as a mobile layer and a layer for fixed reception. In this paper we report on simulations of performance of the mobile layer of this system using typical reception algorithms in a TU6 channel. We show that while a different sampling frequency has been adopted for the possible next generation system, and even with the choice of 16384 FFT, mobile reception under highway conditions can be obtained while increasing the data rate significantly.