Enhancements of DVB-SH system in comparison with DVB-H system

Autor/autori: Ing. Cristina – Gabriela GHEORGHE

Rezumat: Televiziunea mobila a cunoscut o dezvoltare importanta in ultimii ani. Radiodifuziunea video digitala la echipamente portabile (prin DVB-H si DVBSH)este una dintre tehnologiile utilizate pentru televiziunea mobila. Scopul articolului este de a preciza imbunatatirile sistemului DVB-SH fata de sistemul DVB-H aparut anterior. Principalele imbunatatiri ale DVB-SH fata de DVB-H sunt: mai multe posibilitati pentru ratele de codare, includerea suportului pentru largimea de banda de 1,7 MHz, FEC utilizand codarea Turbo si intreteserea in timp imbunatatita.

Cuvinte cheie: Sistem, standard, satelit, terestru, televiziune, echipament, banda, frecventa


Abstract: Mobile television knew a great development in the last years. Digital video broadcasting to handheld equipments (through DVB-H and DVB-SH) is one of the technologies used for mobile television. The purpose of the paper is to specify the enhancements of DVB-SH system in comparison with DVB-H system which appeared previously. The main enhancements of DVB-SH in comparison with DVB-H are: many possibilities for coding rates, inclusion of suport for 1,7 MHz bandwidth, FEC using Turbo coding and improved time interleaving.

Keywords: System, standard, satellite, terrestrial, television, equipment, band, frequencies

 

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