Time-Frequency Slicing for the Next Generation Mobile TV Standard DVB-NGH

Abstract

[ES] Estudio y evaluacion de la tecnica TFS para el estandar de nueva generación DVB-NGH

[EN] Time-Frequency Slicing is a novel transmission technique that consists of transmitting the services across several channels with frequency hopping and time-slicing which breaks the existing paradigm of transmitting digital TV services in a single RF channel (multiplex). TFS permits to obtain coverage advantage due to improved frequency diversity (since services can be potentially spread over the whole RF frequency band), and capacity gain due to improved statistical multiplexing. TFS was originally proposed in the standardization process of DVB-T2 focusing on capacity increase for HDTV and 3DTV services. DVB-NGH has adopted TFS as a technique to improve the coverage for portable and mobile reception which have not yet been studied in depth. This Thesis discusses the potential gains of TFS and the most reliable way of quantizing them, the main factors that cause disturbances on the signal and the performance of a NGH system with TFS together with realistic mobile scenarios is also analysed by means of real field measurement and physical layer simulation.