Decoder for a trellis encoded signal corrupted by NTSC co-channe

Details Decoder for a trellis encoded signal corrupted by NTSC co-channe Decoder for a trellis encoded signal corrupted by NTSC co-channe

1996-10-11

1998-07-28

Bocure, Tesfaldet

Pulse or digital communications

Receivers

Interference or noise reduction

375341, 375350, H03D 104, H04L 2508

Patent

active

057871299

ABSTRACT:
A receiver for decoding encoded data transmitted by a transmitting station includes (i) sum and difference filters for filtering the encoded data and for providing corresponding sum and difference filtered outputs, (ii) first and second variable gain amplifiers for respectively controlling the sum and difference filtered outputs so as to provide corresponding sum and difference controlled filtered outputs that vary along a continuum in order to suppress co-channel interference and white Gaussian noise in the encoded data, and (iii) a Viterbi decoder for decoding the sum and difference controlled filtered outputs to recover uncoded data.

REFERENCES:
patent: 4583090 (1986-04-01), Eden et al.
patent: 5396657 (1995-03-01), Jokinen
patent: 5453797 (1995-09-01), Nicolas et al.
patent: 5594496 (1997-01-01), Nielsen et al.
patent: 5600677 (1997-02-01), Citta et al.
patent: 5602602 (1997-02-01), Hulyalkar
patent: 5604541 (1997-02-01), Kim et al.
patent: 5619534 (1997-04-01), Hulyalkar
patent: 5636252 (1997-06-01), Patel et al.

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