ESTIMATION OF THE IMPULSE RESPONSE OF TELEVISION CHANNELS FROM DIGITIZED WAVEFORMS

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Authors
  1. Vincent, A.
  2. Bruneau, M.
Corporate Authors
Communications Research Centre, Ottawa ONT (CAN)
Abstract
The report presents a technique to characterize television channels without disrupting the normal video program. TELETEXT data lines transmitted during the vertical blanking interval are digitized. The least-squares analysis is applied on the sampled data to estimate the channel impulse response, from which the amplitude and phase characteristics are computed. The report begins by a short review of the television and teletext signals. Then, the theory and implementation of least-squares analysis techniques are presented. Also, the signal processing leading to TV channel transfer function evaluation is described. Finally, experimental results are presented.
Report Number
CRC-R-1376 —
Date of publication
15 Feb 1985
Number of Pages
60
DSTKIM No
85-01263
CANDIS No
46081
Format(s):
Electronic Document(PDF)

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