Statistical Time-Frequency Multiplexing of HD Video Traffic in DVB-T2

Mehdi Rezaei,Moncef Gabbouj,Imed Bouazizi

doi:10.1155/2009/186960

Mehdi Rezaei, Moncef Gabbouj + Show 1 more

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https://doi.org/10.1155/2009/186960

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Abstract

Digital video broadcast-terrestrial 2 (DVB-T2) is the successor of DVB-T standard that allows a two-dimensional multiplexing of broadcast services in time and frequency domains. It introduces an optional time-frequency slicing (TFS) transmission scheme to increase the flexibility of service multiplexing. Utilizing statistical multiplexing (StatMux) in conjunction with TFS is expected to provide a high performance for the broadcast system in terms of resource utilization and quality of service. In this paper, a model for high-definition video (HDV) traffic is proposed. Then, utilizing the proposed model, the performance of StatMux of HDV broadcast services over DVB-T2 is evaluated. Results of the study show that implementation of StatMux in conjunction with the newly available features in DVB-T2 provides a high performance for the broadcast system.

Highlights

Digital video broadcast-terrestrial 2 (DVB-T2) is going to be a new European Telecommunications Standards Institute (ETSI) standard specification for digital terrestrial television
Forward error correction (FEC) encoding is performed at the bit-interleaved coding module using a low-density parity code (LDPC) concatenated to a BCH code
The second part of the results presents the performance of statistical multiplexing (StatMux) in DVB-T2

Summary

Introduction

Digital video broadcast-terrestrial 2 (DVB-T2) is going to be a new European Telecommunications Standards Institute (ETSI) standard specification for digital terrestrial television. DVB-T2 is an upgrade of the DVB-T system designed to provide new high quality services. The generic stream encapsulation (GSE) module encapsulates protocol data units in a protocolindependent manner into GSE packets, which are arranged into the so-called baseband (BB) frames by the input stream processor module. Subsequent interleaving and mapping to physical layer (PL) frames as well as OFDM symbol mapping is performed at the frame mapper module. The resulting PL frames are passed to the modulator modules for modulation and transmission. The newly defined modulation modes 64 and 256 QAM and OFDM carrier modes significantly enhance the spectral efficiency; achieving bandwidths of up to 40 Mbps (not accounting for signaling overhead) enabling the broadcast of HDTV services over terrestrial networks

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