Open AccessDISEÑO DIGITAL DE UNA REPETIDORA DE EMISIÓN DVB-T
Author(s) -
Evelio Astaiza Hoyos,
Héctor Fabio Bermúdez Orozco
Publication year - 2012
Publication title -
revista de investigaciones universidad del quindio
Language(s) - English
Resource type - Journals
eISSN - 2500-5782
pISSN - 1794-631X
DOI - 10.33975/riuq.vol23n1.426
Subject(s) - digital video broadcasting , computer science , digital terrestrial television , dvb t , broadcasting (networking) , scheme (mathematics) , digital television , block (permutation group theory) , signal (programming language) , electronic engineering , telecommunications , computer network , orthogonal frequency division multiplexing , engineering , mathematics , channel (broadcasting) , programming language , mathematical analysis , geometry
In this paper, an optimal signal processing design scheme is proposed for a digital broadcast DVB – T in Digital Terrestrial Television Broadcasting (DTTB) networks. The proposed scheme consists of two stages. In the first stage (input stage), a mixer performs a Frequency Down Conversion to translate the radio signal to IF band, then, an interpolator and decimator perform the processing to change the sample rate for the AFC block. The second stage (output stage) comprises one interpolator to change the sample rate at desired rate, and one mixer to return the signal frequency to RF band. Simulations show that the proposed scheme decrea-ses the operations compared to the conventional design schemes. Additionally, implementation constraints are identified for each stage according to design requirements. Finally, some comments are presented in order to identify limitations and practical design issues in the proposed system.