Intermediate rate applications of punctured convolutional codes

Details Intermediate rate applications of punctured convolutional codes Intermediate rate applications of punctured convolutional codes

1998-01-20

1999-06-01

Tu, Trinh L.

Excavating

G06F 1100

Patent

active

059094540

ABSTRACT:
A method and apparatus are provided for convolutionally encoding digital data with a rate 5/8 convolutional code. A standard rate 1/2 convolutional code is punctured to rate 5/8 using a puncture map of ##EQU1## and octal generators 133, 171 wherein the constraint length K=7. An incoming data stream is processed using the rate 5/8 code. In another embodiment, a rate 1/3 convolutional code is punctured to rate 5/8 using a puncture map of ##EQU2## and octal generators 117, 135, 161 wherein the constraint length K=7.

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