An adaptive coding scheme for time-varying channels

Author

Vucetic, Branka

Author_Institution

Sch. of Electr. Eng., Sydney Univ., NSW, Australia

Volume

39

Issue

5

fYear

1991

fDate

5/1/1991 12:00:00 AM

Firstpage

653

Lastpage

663

Abstract

An adaptive coding scheme for digital communication over time-varying channels is presented. The scheme is based on a finite-state Markov channel model. Emphasis is on the adaptation of the error protection to the actual channel state. The throughput gains that are achieved by the adaptive scheme relative to the conventional nonadaptive coding methods are demonstrated by several examples. Of special interest is the use of punctured convolutional codes with maximum-likelihood Viterbi algorithm to enable adaptive encoding and decoding without modifying the basic structure of the encoder and the decoder

Keywords

Markov processes; digital communication systems; encoding; error correction codes; telecommunication channels; adaptive coding; adaptive decoding; channel state; decoder; digital communication; encoder; error protection; finite-state Markov channel model; maximum-likelihood Viterbi algorithm; punctured convolutional codes; throughput gains; time-varying channels; Adaptive coding; Convolutional codes; Error correction; Error correction codes; Error probability; Maximum likelihood decoding; Protection; Throughput; Time-varying channels; Viterbi algorithm;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/26.87156

Filename

87156