Sequential decoding of time-varying convolutional codes.
sequentialdecodi00leri.pdf (3.634Mb)Abstract
A discussion of convolutional encoding and sequential
decoding is given as background for the experimental phase
of this research. A modified stack algorithm is programmed
to simulate a sequential decoder for use in the study of
time-varying convolutional codes.
The decoder simulator is used to analyze the structure
of codes with the aim of finding a systematic method by
which to construct time-varying convolutional codes with
good decoding properties. Some difficulties in construction
techniques are discussed.
Extensive computer simulation comparing decoding performance
of time-varying codes to that of fixed codes Is
reported. The conclusion of these comparisons is that the
time-varying codes studied thus far are of theoretical
interest only.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.Collections
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