Buffer constraints for rate-distortion optimization in mobile video communications

Author

Tonci, F. ; Adsumilli, C.B. ; Carli, M. ; Neri, Alessandro ; Mitra, Sanjit

Author_Institution

Dept. of Appl. Electron., Univ. of Roma TRE, Italy

Volume

1

fYear

2005

fDate

14-15 July 2005

Firstpage

71

Abstract

In this contribution, a theoretical model of buffer constraints for rate-distortion (R-D) optimization in mobile video communications is presented and analyzed. The analytical model is based on quantitative buffer underflow time and allows for various video transmission scenarios over ad-hoc networks. By considering the play-out probability and the actual "filling" state of the buffer, the constraints estimate the packet loss effects on the displayed video due to buffer underflow. The distortions in the video due to these buffer errors are then categorized and the overall increment in the R-D performance is substantiated. Furthermore, the model accounts for other key implementation issues and the dynamic changes in real-time ad-hoc channel conditions.

Keywords

ad hoc networks; buffer circuits; circuit optimisation; mobile communication; network-on-chip; video coding; ad hoc networks; buffer constraints; mobile video communications; packet loss effects; play out probability; rate-distortion optimization; video transmission; Ad hoc networks; Analytical models; Constraint optimization; Delay; Mobile communication; Mobile computing; Rate-distortion; Resilience; Streaming media; Video compression;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals, Circuits and Systems, 2005. ISSCS 2005. International Symposium on

Print_ISBN

0-7803-9029-6

Type

conf

DOI

10.1109/ISSCS.2005.1509853

Filename

1509853