Adaptive rate coding for image data transmission

Author

Bhaskar, Vidhyacharan ; Joiner, Laurie L.

Author_Institution

Dept. of Electr. & Comput. Eng., Alabama Univ., Huntsville, AL, USA

fYear

2002

fDate

2002

Firstpage

251

Lastpage

255

Abstract

Punctured convolutional codes (PCCs) are necessary for applications requiring high data transmission rate. For efficient high rate codes, PCCs have been widely used to reduce the implementation complexity of the Viterbi decoder. The codes provide good bit-error-rate (BER) performance. A slowly time-varying frequency non-selective Rician fading channel is assumed. A finite-state Markov chain is used to model the time-varying channel. The error control system uses channel-state information to decode, which of the various codes should be used at any given moment. The paper provides a comparison of lower and higher rate codes in terms of coding gain and providing sufficient error control.

Keywords

Markov processes; Rician channels; Viterbi decoding; adaptive codes; convolutional codes; error correction codes; image coding; time-varying channels; Viterbi decoder; adaptive rate coding; bit-error-rate performance; channel-state information; coding gain; error control system; finite-state Markov chain; high data transmission rate; higher rate codes; image data transmission; lower rate codes; punctured convolutional codes; slowly time-varying frequency nonselective Rician fading channel; Bit error rate; Convolutional codes; Data communication; Decoding; Error correction; Frequency; Image coding; Rician channels; Time-varying channels; Viterbi algorithm;

fLanguage

English

Publisher

ieee

Conference_Titel

System Theory, 2002. Proceedings of the Thirty-Fourth Southeastern Symposium on

ISSN

0094-2898

Print_ISBN

0-7803-7339-1

Type

conf

DOI

10.1109/SSST.2002.1027045

Filename

1027045