A Joint Optimized Transmission Scheme Based on M-QAM and UEP for Wireless Scalable Video

Author

Wang, Zhen ; Zheng, Haomian ; Lu, Yang ; Cui, Hao ; Tang, Ke

Author_Institution

Dept. of Electron. Eng., Tsinghua Univ., Beijing

fYear

2006

fDate

4-6 Oct. 2006

Firstpage

1686

Lastpage

1689

Abstract

M-QAM is a modulation technology with high spectral efficiency, due to the property of Gray-coded constellation phasor where different bits have distinct anti-noise ability. Scalable video coding has the ability to transmit partial bit streams thus reconstruct lower video quality according to the channel status to cater for the channel fluctuation. A rate-distortion optimized (RDO) wireless video streaming algorithm is proposed, in which the allocation of M-QAM subchannels, the numbers of scalable video layers, and channel coding protection priorities for different layers are considered jointly. Compared with the EEP without considering prioritized sub-channels, the proposed algorithm derives PSNR gain about 1.5-2dB, and demonstrates the robustness of the video streaming over wireless channels

Keywords

Gray codes; channel allocation; modulation coding; video coding; video streaming; Gray-coded constellation phasor; M-QAM subchannel allocation; joint optimized transmission; modulation technology; unequal error protection; video coding; video quality; wireless channels; wireless video streaming algorithm; Bandwidth; Channel coding; Constellation diagram; Error correction codes; PSNR; Rate-distortion; Robustness; Streaming media; Systems engineering and theory; Video coding; M-QAM; RCPC; Scalable Video Coding; UEP;

fLanguage

English

Publisher

ieee

Conference_Titel

Computational Engineering in Systems Applications, IMACS Multiconference on

Conference_Location

Beijing

Print_ISBN

7-302-13922-9

Electronic_ISBN

7-900718-14-1

Type

conf

DOI

10.1109/CESA.2006.313583

Filename

4105649