Excavating
Patent
1994-05-10
1996-04-23
Baker, Stephen M.
Excavating
H03M 1312
Patent
active
055110827
ABSTRACT:
A method and apparatus are provided for convolutionally encoding digital data with a rate 4/5 convolutional code. A nonoptimal rate 1/2, sixteen-state convolutional code is punctured to rate 4/5 using a puncture map of ##EQU1## and octal generators 25, 37 wherein .nu.=4. An incoming data stream is processed using the rate 4/5 code. Punctured rate 3/4 and 6/7 codes are also provided.
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Heegard Chris
How Stephen K.
Baker Stephen M.
General Instrument Corporation of Delaware
Lipsitz Barry R.
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