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Automatic identification of impairments caused by intermodulation distortion in cable television pictures

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2 Author(s)
R. K. Ward ; Dept. of Electr. Eng., British Columbia Univ., Vancouver, BC, Canada ; Q. Zhang

The authors study the feasibility of automatically monitoring a television picture for the purpose of knowing whether or not impairments resulting from intermodulation beats are present. They develop a mathematical model for the intermodulation beats and show that the theoretical results confirm the experimental ones. These results show that by using the two-dimensional discrete Fourier transform of a picture the automatic detection and recognition of intermodulation distortion is feasible. The results demonstrate, contrary to common belief, that it is possible to monitor the signal in a nonintrusive fashion

Published in:

IEEE Transactions on Broadcasting  (Volume:38 ,  Issue: 1 )