Title :
Hardware implementation of an Echo-Canceller for DVB-T On-Channel Repeaters
Author :
Altamura, P. ; Cardarilli, Gian Carlo ; Re, Matteo ; Del Re, A.
Author_Institution :
Univ. of Rome ´Tor Vergata´, Rome
Abstract :
The necessity to obtain a better area coverage for services such as terrestrial digital television (DVB-T) is often obtained by using isofrequency channel repeaters. In this case the repeater receives at the input part of the transmitted signal and consequently an echo canceller is requested. The echo canceller is often based on a loop comprising a complex FIR filter with variable coefficients, that are calculated from the autocorrelation function of the received signal. In this paper, a hardware implementation of an echo-canceller is presented. A board based on a Texas Instruments floating-point DSP and an Altera Cyclone II FPGA has been used for the final prototype.
Keywords :
FIR filters; digital television; echo suppression; radio repeaters; DVB-T on-channel repeater; FIR filter; echo canceller; terrestrial digital television; transmitted signal; Autocorrelation; Cyclones; Digital TV; Digital signal processing; Digital video broadcasting; Echo cancellers; Finite impulse response filter; Hardware; Instruments; Repeaters;
Conference_Titel :
Signals, Systems and Computers, 2007. ACSSC 2007. Conference Record of the Forty-First Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
978-1-4244-2109-1
Electronic_ISBN :
1058-6393
DOI :
10.1109/ACSSC.2007.4487367