Emerging Technologies of Future Multimedia Coding, Analysis and Transmission 免费阅读 下载全文 <正>Three years ago,ZTE Communications published a special issue called Emerging Technologies of Multimedia Coding,Analysis and Transmission.Over the past three years,great advances have been made in multimedia.The purpose of this special issue is to report on the progress and
ZTE Communications Special Issue on Multiple Access Techniques for 5G 免费阅读 下载全文 <正>5G mobile cellular networks are required to provide the significant increase in network throughput,cell-edge data rate,massive connectivity,superior spectrum efficiency,currently deploying long-term evolution(LTE)and LTE-advanced networks.To meet these challenges of 5G networks,
Overview of the Second Generation AVS Video Coding Standard(AVS2) 免费阅读 下载全文 AVS2 is a new generation video coding standard developed by the AVS working group. Compared with the first generation AVS video coding standard, known as AVS1, AVS2 significantly improves coding performance by using many new coding technologies,e.g., adaptive block partition and two level transform coding. Moreover, for scene video, e.g. surveillance video and conference video, AVS2 provided a background picture modeling scheme to achieve more accurate prediction, which can also make object detection and tracking in surveillance video coding more flexible. Experimental results show that AVS2 is competitive with High Efficiency Video Coding(HEVC) in terms of performance. Especially for scene video, AVS2 can achieve 39% bit rate saving over HEVC.
An Introduction to High Efficiency Video Coding Range Extensions 免费阅读 下载全文 High Efficiency Video Coding(HEVC) is the latest international video coding standard, which can provide the similar quality with about half bandwidth compared with its predecessor, H.264/MPEG-4 AVC. To meet the requirement of higher bit depth coding and more chroma sampling formats, range extensions of HEVC were developed. This paper introduces the coding tools in HEVC range extensions and provides experimental results to compare HEVC range extensions with previous video coding standards. Experimental results show that HEVC range extensions improve coding efficiency much over H.264/MPEG-4 AVC High Predictive profile, especially for 4K sequences.
ZTE Communications Special Issue on Multi-Gigabit Millimeter-Wave Wireless Communications 免费阅读 下载全文 <正>The exponential growth of wireless devices in recent years has motivated the exploration of the millimeter-wave frequency spectrum for multi-gigabit wireless communications.Recent advances in antenna technology,RF CMOS process,and high-speed baseband signal processing algorithms make
Multi-Layer Extension of the High Efficiency Video Coding(HEVC) Standard 免费阅读 下载全文 Multi-layer extension is based on single-layer design of High Efficiency Video Coding(HEVC) standard and employed as the common structure for scalability and multi-view video coding extensions of HEVC. In this paper, an overview of multi-layer extension is presented. The concepts and advantages of multi-layer extension are briefly described. High level syntax(HLS) for multi-layer extension and several new designs are also detailed.
SHVC, the Scalable Extensions of HEVC,and Its Applications 免费阅读 下载全文 This paper discusses SHVC, the scalable extension of the High Efficiency Video Coding(HEVC) standard, and its applications in broadcasting and wireless broadband multimedia services. SHVC was published as part of the second version of the HEVC specification in 2014. Since its publication, SHVC has been evaluated by application standards development organizations(SDOs) for its potential benefits in video applications, such as terrestrial and mobile broadcasting in ATSC 3.0, as well as a variety of 3GPP multimedia services, including multi-party multi-stream video conferencing(MMVC), multimedia broadcast/multicast service(MBMS),and dynamic adaptive streaming over HTTP(DASH). This paper provides a brief overview of SHVC and the performance and complexity analyses of using SHVC in these video applications.
ITP Colour Space and Its Compression Performance for High Dynamic Range and Wide Colour Gamut Video Distribution 免费阅读 下载全文 High Dynamic Range(HDR) and Wider Colour Gamut(WCG) content represents a greater range of luminance levels and a more complete reproduction of colours found in real-world scenes. The current video distribution environments deliver Standard Dynamic Range(SDR) signal Y′Cb Cr. For HDR and WCG content, it is desirable to examine if such signal format still works well for compression, and to know if the overall system performance can be further improved by exploring different signal formats. In this paper, ITP(IC T C P) colour space is presented. The paper concentrates on examining the two aspects of ITP colour space: 1) ITP characteristics in terms of signal quantization at a given bit depth; 2) ITP compression performance. The analysis and simulation results show that ITP 10 bit has better properties than Y′Cb Cr-PQ 10 bit in colour quantization, constant luminance, hue property and chroma subsampling, and it also has good compression efficiency. Therefore it is desirable to adopt ITP colour space as a new signal format for HDR/WCG video compression.
DASH and MMT and Their Applications in ATSC 3.0 免费阅读 下载全文 demand viewing of multimedia content over IP with browser-centric media endpoints introduces a new requirement for more individualized and flexible access to content. This has resulted in alternatives to MPEG-2 TS. While the needs of interactive broadcast services(such as personalized advertisement or selection of audio stream with a language suitable for a specific user) grow there is an active standardization work under going for the next generation broadcasting systems. To best enable a complete system of hybrid broadcast and broadband services, Advanced Television Systems Committee(ATSC) 3.0 has developed an enhanced broadcast transport method named Real-Time Object Delivery over Unidirectional Transport(ROUTE)/DASH for delivery of DASH-formatted content and non-real time(NRT) data. Additionally, for broadcasting, ATSC 3.0 has also adopted MPEG Media Transport(MMT) standard, which inherits major advantageous features of MPEG-2 TS and is very useful in real-time streaming delivery via a unidirectional delivery network.This paper mainly describes features and design considerations of ATSC 3.0, and discusses the applications of the transport protocols used for broadcasting, i.e., ROUTE/DASH and MMT, whose comparative introductions are also presented in details.
Introduction to AVS2 Scene Video Coding Techniques 免费阅读 下载全文 The second generation Audio Video Coding Standard(AVS2) is the most recent video coding standard. By introducing several new coding techniques, AVS2 can provide more efficient compression for scene videos such as surveillance videos, conference videos,etc. Due to the limited scenes, scene videos have great redundancy especially in background region. The new scene video coding techniques applied in AVS2 mainly focus on reducing redundancy in order to achieve higher compression. This paper introduces several important AVS2 scene video coding techniques. Experimental results show that with scene video coding tools, AVS2 can save nearly 40% BD-rate(Bj?ntegaard-Delta bit-rate) on scene videos.
From CIA to PDR:A Top-Down Survey of SDN Security for Cloud DCN 免费阅读 下载全文 By extracting the control plane from the data plane, SDN enables unprecedented flexibility for future network architectures and quickly changes the landscape of the networking industry. Although the maturity of commonly accepted SDN security practices is the key to the proliferation of cloud DCN, SDN security research is still in its infancy. This paper gives a top-down survey of the approaches in this area,discussing security challenges and opportunities of softwaredefined datacenter networking for cloud computing. It leverages the well-known confidentiality-integrity-availability(CIA)matrix and protection-detection-reaction(PDR) model to give an overview of current security threats and security measures. It also discusses promising research directions in this field.
A Software-Defined Approach to IoT Networking 免费阅读 下载全文 It is foreseen that the Internet of Things(Io T) will comprise billions of connected devices, and this will make the provisioning and operation of some Io T connectivity services more challenging. Indeed, Io T services are very different from legacy Internet services because of their dimensioning figures and also because Io T services differ dramatically in terms of nature and constraints. For example, Io T services often rely on energy and CPU- constrained sensor technologies, regardless of whether the service is for home automation, smart building,e-health, or power or water metering on a regional or national scale. Also, some Io T services, such as dynamic monitoring of biometric data, manipulation of sensitive information, and privacy needs to be safeguarded whenever this information is forwarded over the underlying Io T network infrastructure. This paper discusses how software- defined networking(SDN) can facilitate the deployment and operation of some advanced Io T services regardless of their nature or scope. SDN introduces a high degree of automation in service delivery and operation—from dynamic Io T service parameter exposure and negotiation to resource allocation, service fulfillment, and assurance. This paper does not argue that all Io T services must adopt SDN.Rather, it is left to the discretion of operators to decide which Io T services can best leverage SDN capabilities. This paper only discusses managed Io T services, i.e., services that are operated by a service provider.
Introduction to ZTE Communications 免费阅读 下载全文 <正>ZTE Communications is a quarterly,peer-reviewed international technical journal(ISSN 1673-5188 and CODEN ZCTOAK)sponsored by ZTE Corporation,a major international provider of telecommunications,enterprise and consumer technology solutions for the Mobile Internet.The journal publishes original academic papers
ZTE Communications Guidelines for Authors 免费阅读 下载全文 <正>Remit of Journal ZTE Communications publishes original theoretical papers,research findings,and surveys on a broad range of communications topics,including communications and information system design,optical fiber and electro-optical engineering,micro-wave technology,radio wave propagation,antenna engineering,electromagnetics,signal and image processing,and power