Wireless Scalable Video Coding Using a Hybrid Digital-Analog Scheme

Wireless video broadcast/multicast and mobile video communication pose a challenge to the conventional video transmission scheme (which consists of separate digital source coding and digital channel coding). The reason is that the separate coding scheme is based on nonscalable coding design, and thi...

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Bibliographic Details
Published in:IEEE transactions on circuits and systems for video technology Vol. 24; no. 2; pp. 331 - 345
Main Authors: Yu, Lei, Li, Houqiang, Li, Weiping
Format: Journal Article
Language:English
Published: New York, NY IEEE 01.02.2014
Institute of Electrical and Electronics Engineers
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Applied sciences
Broadcasting
Broadcasting. Videocommunications. Audiovisual
Channels
Coding
Continuous quality scalability (CQS)
Detection, estimation, filtering, equalization, prediction
Devices
Digital
Encoding
Exact sciences and technology
hybrid digital-analog (HDA)
Image processing
Information, signal and communications theory
joint source-channel coding (JSCC)
Multicast
Noise levels
Product introduction
Receivers
robust video communication
Scalability
Signal and communications theory
Signal processing
Signal to noise ratio
Signal, noise
Streaming media
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Transmission and modulation (techniques and equipments)
Video coding
Video compression
Videocommunications (networks and services)
Wireless communication
wireless scalable video coding (WSVC)
wireless video broadcast/multicast
Video coding
Performance evaluation
State of the art
Source separation
Scalability
robust video communication
Wireless telecommunication
Adaptability
Signal estimation
Video signal
Equity
Mobile communication
Joint source channel coding
Videoconference
Data broadcast
Information dissemination
Video signal processing
Multicast
Codec
Video broadcasting
Broadcasting
Signal transmission
joint source-channel coding (JSCC)
wireless scalable video coding (WSVC)
Continuous quality scalability (CQS)
Source coding
hybrid digital-analog (HDA)
Receiver
Channel coding
wireless video broadcast/multicast
ISSN:1051-8215, 1558-2205
Online Access:Get full text
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Summary:Wireless video broadcast/multicast and mobile video communication pose a challenge to the conventional video transmission scheme (which consists of separate digital source coding and digital channel coding). The reason is that the separate coding scheme is based on nonscalable coding design, and this unavoidably leads to cliff effect as well as limits the ability to support multiple users with diverse channel conditions. In this paper, we propose a novel wireless scalable video coding (WSVC) framework. Specifically, we present a hybrid digital-analog (HDA) joint source-channel coding (JSCC) scheme that integrates the advantages of digital coding and analog coding. Moreover, the proposed JSCC is able to broadcast one video with different resolutions to fit various devices with different display resolutions. Compared to most state-of-the-art video delivery methods, it avoids the staircase effect and realizes continuous quality scalability (CQS) on condition that the channel quality is within the expected range, and it has strong adaptability to channel variation with higher coding efficiency and better fairness among all receivers. Therefore, it is very suitable for wireless video broadcast/multicast transmission and mobile video applications. The experimental results show that for broadcasting/multicasting the videos with CIF and QCIF resolutions the proposed WSVC outperforms SoftCast (which is a new analog scheme) average 0.60-5.90 dB and 3.39-9.97 dB respectively, outperforms SVC+HM (which combines H.264/SVC codec and hierarchical modulation technique) average 3.87-9.13 dB and 0.27-10.47 dB respectively, and outperforms DCast (which is an up-to-date video delivery scheme) about 0.2-3.3 dB for the video with CIF resolution. The experimental results verify the effectiveness of our proposed WSVC framework.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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ISSN:1051-8215
1558-2205
DOI:10.1109/TCSVT.2013.2273675