DocumentCode :
2651107
Title :
An Echo Canceller for DVB-T/H On-Channel Repeaters
Author :
Nasr, Karim M. ; Cosmas, John ; Bard, Maurice ; Gledhill, Jeff
Author_Institution :
Sch. of Eng. & Design, Brunel Univ., Uxbridge
fYear :
2007
fDate :
22-25 April 2007
Firstpage :
639
Lastpage :
643
Abstract :
This paper investigates the design and performance of an FIR echo canceller for on channel repeaters in DVB-T/H network within the framework of the PLUTO project. The possible approaches for echo cancellation are briefly reviewed and the main guidelines for the design of such systems are presented. The main system parameters are discussed. The performance of a FIR echo canceller based on an open loop approach for channel estimation is tested for different radio channel conditions and for different number of taps of the FIR filter. It is shown that a minimum number of taps is recommended to achieve a certain mean rejection ratio or isolation depending on the type of channel. The expected degradation in performance due to the use of fixed point rather than floating point arithmetic in hardware implementation is presented for different number of bits.
Keywords :
channel estimation; digital video broadcasting; echo suppression; wireless channels; DVB-T/H On-channel repeaters; FIR echo canceller; channel estimation; floating point arithmetic; mean rejection ratio; radio channel conditions; Channel estimation; Degradation; Digital video broadcasting; Echo cancellers; Finite impulse response filter; Floating-point arithmetic; Guidelines; Pluto; Repeaters; Testing;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Vehicular Technology Conference, 2007. VTC2007-Spring. IEEE 65th
Conference_Location :
Dublin
ISSN :
1550-2252
Print_ISBN :
1-4244-0266-2
Type :
conf
DOI :
10.1109/VETECS.2007.142
Filename :
4212570
Link To Document :
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