Variable rate channel coding and enhanced interleaving for image transmission using an outage criterion

Author

Manji, Salim ; Mandayam, Narayan B.

Author_Institution

Wireless Inf. Network Lab., Rutgers Univ., Piscataway, NJ, USA

fYear

1999

fDate

1999

Firstpage

344

Abstract

We consider an image transmission system consisting of set partitioning in hierarchical trees (SPIHT) wavelet-based source coding, and list Viterbi algorithm (LVA) channel coding using rate compatible punctured convolutional (RCPC) codes. Our goal is to minimize bandwidth usage while maintaining received image quality. We introduce an outage criterion for image transmission. A received image is considered to be in outage if its pixel values are not identical to the image transmitted. In order to reduce correlation in fading, an enhanced block interleaving scheme employing a subblock structure is proposed. Using RCPC codes, we devise a variable rate channel coding system based on the current channel state information. Combining enhanced interleaving and variable rate channel coding, we construct a method to select the highest rate RCPC code that satisfies the image outage criterion, thus balancing the requirements of high bandwidth efficiency and high image quality

Keywords

Rayleigh channels; combined source-channel coding; convolutional codes; image coding; telecommunication network reliability; trees (mathematics); variable rate codes; visual communication; wavelet transforms; LVA channel coding; RCPC codes; SPIHT wavelet-based source coding; bandwidth usage; channel state information; enhanced block interleaving scheme; enhanced interleaving; fading; image quality; image transmission; list Viterbi algorithm channel coding; outage criterion; pixel values; rate compatible punctured convolutional codes; received image quality; set partitioning in hierarchical trees wavelet-based source coding; subblock structure; variable rate channel coding; Bandwidth; Channel coding; Convolutional codes; Fading; Image communication; Image quality; Interleaved codes; Pixel; Source coding; Viterbi algorithm;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Networking Conference, 1999. WCNC. 1999 IEEE

Conference_Location

New Orleans, LA

ISSN

1525-3511

Print_ISBN

0-7803-5668-3

Type

conf

DOI

10.1109/WCNC.1999.797844

Filename

797844