Title :
Time Diversity in Mobile DVB-T2 Systems
Author :
Gozálvez, David ; Gómez-Barquero, David ; Vargas, David ; Cardona, Narcís
Author_Institution :
Inst. de Telecomun. y Aplic. Multimedia (iTEAM), Univ. Politec. de Valencia, Valencia, Spain
Abstract :
DVB-T2 implements a very flexible time interleaving that allows multiple tradeoffs in terms of time diversity, latency and power saving. In this paper, we study in detail these tradeoffs in the context of mobile reception. Together with time diversity, we also investigate the impact of reduced time de-interleaving memory and Alamouti-based MISO in the mobile reception of DVB-T2 services. In addition, we propose the utilization of upper layer FEC protection in order to overcome the limitations of the DVB-T2 physical layer for the provision of long time interleaving, and enable fast zapping. The performance is evaluated by means of simulations in mobile channels that include the presence of fast fading and shadowing in the received signal.
Keywords :
channel coding; digital video broadcasting; diversity reception; forward error correction; mobile communication; Alamouti-based MISO; forward error correction; mobile DVB-T2 systems; mobile reception; power saving; time diversity; time interleaving; upper layer FEC protection; Digital video broadcasting; Forward error correction; Mobile communication; OFDM; Parity check codes; Receivers; Robustness; Channel coding; DVB-T2; mobile TV; time diversity; time interleaving;
Journal_Title :
Broadcasting, IEEE Transactions on
DOI :
10.1109/TBC.2011.2161189
