Combined video coding and multilevel modulation

Author

Fuldseth, Arild ; Ramstad, Tor A.

Author_Institution

Dept. of Telecommun., Norwegian Univ. of Sci. & Technol., Trondheim, Norway

Volume

1

fYear

1996

fDate

16-19 Sep 1996

Firstpage

941

Abstract

A video transmission system based on combined source coding and multilevel modulation is proposed. For the proposed system, graceful degradation for noisy channels is obtained by finding good index maps between the quantized source coder parameters and the amplitude levels of a multilevel QAM signal constellation. The index maps are designed both for good neighbor properties and for power efficient transmission by using simulated annealing. The performance of the proposed system is comparable to a reference system based on the H.263 coder for high CSNR values, and degrades far more gracefully for low CSNR values

Keywords

quadrature amplitude modulation; simulated annealing; source coding; video coding; visual communication; amplitude levels; combined video coding multilevel modulation; good neighbor properties; graceful degradation; index maps; multilevel QAM signal constellation; noisy channels; performance; power efficient transmission; quantized source coder parameters; simulated annealing; source coding; video transmission system; Constellation diagram; Decoding; Degradation; Filter bank; Modulation coding; Noise level; Quadrature amplitude modulation; Simulated annealing; Source coding; Video coding;

fLanguage

English

Publisher

ieee

Conference_Titel

Image Processing, 1996. Proceedings., International Conference on

Conference_Location

Lausanne

Print_ISBN

0-7803-3259-8

Type

conf

DOI

10.1109/ICIP.1996.559655

Filename

559655