Adaptive rate allocation in a joint source/channel coding framework for wireless channels

Author

Jafarkhani, Hamid ; Ligdas, Paschalis ; Farvardin, Nariman

Author_Institution

Dept. of Electr. Eng., Maryland Univ., College Park, MD, USA

Volume

1

fYear

1996

Firstpage

492

Abstract

We propose an adaptive rate allocation scheme to choose the rates of the source coder and channel coder pair optimally. We express the end-to-end expected distortion in terms of the source coder distortion and the channel distortion. Also, we propose a modified Gilbert (1960) noise channel to model the combination of channel encoder, channel, and channel decoder. Based on our new model, we estimate the channel distortion and select the best source coder and channel coder pair to encode and transmit the source. Simulation results show the optimality of the rate allocation scheme and the advantage of the adaptation

Keywords

adaptive systems; channel coding; decoding; fading; noise; source coding; adaptive rate allocation; channel coder; channel decoder; channel distortion; channel encoder; end to end expected distortion; fading channels; joint source/channel coding; modified Gilbert noise channel; simulation results; source coder; source coder distortion; wireless channel; Bandwidth; Bit rate; Channel coding; Computational modeling; Decoding; Educational institutions; Fading; Markov processes; Power capacitors; Quantization;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 1996. Mobile Technology for the Human Race., IEEE 46th

ISSN

1090-3038

Print_ISBN

0-7803-3157-5

Type

conf

DOI

10.1109/VETEC.1996.503496

Filename

503496