Method and apparatus for combating co-channel NTSC interference for digital TV transmission
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United States of America Patent
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Apr 30, 1996
Issued Date -
N/A
app pub date -
Apr 20, 1994
filing date -
Feb 10, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An ATV receiver having a decoder which is designed to process a subset limited trellis pre-coded television signal. The decoder processes co-channel interference so as to produce at the filter output of a rejection filter, a residual interference spectrum which is as flat as possible. The filter exploits the fact that only the picture and the sound carriers need to be sufficiently attenuated and cancels NTSC co-channel interference with only a small degradation in performance when AWGN is also present.
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