Title :
Identification and minimization of IIR tap coefficients for the cancellation of complex multipath in terrestrial television
Author :
Sherratt, Robert Simon
Author_Institution :
Dept. of Eng., Reading Univ., UK
fDate :
12/1/1996 12:00:00 AM
Abstract :
By using a deterministic approach, an exact form for the synchronous detected video signal under a ghosted condition is presented. Information regarding the phase quadrature-induced ghost component derived from the quadrature forming nature of the vestigial sideband (VSB) filter is obtained by crosscorrelating the detected video with the ghost cancel reference (GCR) signal. As a result, the minimum number of taps required to correctly remove all the ghost components is subsequently presented. The results are applied to both National Television System Committee (NTSC) and phase alternate line (PAL) television
Keywords :
IIR filters; correlation methods; filtering theory; interference suppression; minimisation; multipath channels; parameter estimation; television broadcasting; television interference; video signal processing; IIR tap coefficients; NTSC TV; National Television System Committee; PAL TV; TV broadcasting; VSB; crosscorrelation; deterministic approach; filter coefficients identification; filter coefficients minimization; ghost cancel reference signal; ghosted condition; multipath cancellation; phase alternate line television; phase quadrature-induced ghost component; synchronous detected video signal; terrestrial television; vestigial sideband filter; Costs; Delay effects; Digital signal processing; Filters; Minimization; Phase detection; Reflection; Signal detection; TV; Transmitters;
Journal_Title :
Circuits and Systems for Video Technology, IEEE Transactions on