Search results for: Yiling Xu
article
IEEE Internet of Things Journal > 2017 > 4 > 6 > 1899 - 1909
With the rapid development of the Internet of Things, more and more small devices are connected into the Internet for monitoring and control purposes. One such type of devices, smart plugs, have been extensively deployed worldwide in millions of homes for home automation. These smart plugs, however, would pose serious security problems if their vulnerabilities were not carefully investigated. Indeed,...
chapter
Characterized by geometry and photometry attributes, point cloud has become widely applied in the real-time presentation of various 3D objects and scenes. The development of even more precise capture devices and the increasing requirements for vivid rendering inevitably induce huge point capacity, thus making the point cloud compression a demanding issue. Considering the non-uniform sampling and time-variant...
chapter
Unprecedented growth in media content generation, communication and consumption has taken over the vast majority of storage spaces in devices, network caches, and clouds. How to identify duplications from network caches is an important issue for fast and efficient content delivery network (CDN) communication and storage. In this work, we developed a novel hash scheme which is scalable and robust to...
article
IEEE Transactions on Multimedia > 2017 > 19 > 10 > 2322 - 2332
In this paper, we develop an interactive screen video streaming-based system to enable the ubiquitous mobile workstyle, which is referred to as personal computer to pervasive computing (PC2PC). The desktop screens of virtualized systems are compressed in the PC2PC servers and delivered to remote end users for stream decoding, rendering, and interactions. We have implemented a system from the scratch,...
chapter
2017 IEEE MTT-S International Microwave Symposium (IMS) > 2015 - 2017
In this paper, a fully-integrated CMOS broadband RF vector multiplier (RFVM) with low root-mean-square (RMS) magnitude and phase errors and high linearity is presented. The proposed RFVM includes a three-stage RC poly-phase filter (PPF) to generate the quadrature phase signals, two parallel phase-invariant variable gain amplifiers (VGA) to adjust the amplitude and phase of the input RF signal, and...
chapter
We develop an innovative PC2PC (personal computer to pervasive computing) system to enable the secure, robust and pervasive mobile workstyle. PC2PC server compresses the desktop screens of any virtualized system, and delivers the stream through any popular networks to PC2PC client remotely for stream decoding, rendering and end-user interaction (such as keyboard/mouse commands). We have implemented...
chapter
While virtual reality (VR) videos have attracted significant amount of attention and efforts, the development of VR is still quite challenging. Among the challenges, the need for enormous bandwidth in live streaming hasn't yet been addressed satisfactorily. To tackle this aspect, we propose a 360° VR live streaming system based on MPEG media transport (MMT) to guarantee the delivery of VR video as...
chapter
In this paper, we investigate the problem of optimal content cache strategy with content of multi-available streaming rates over wireless network of different user channel condition. Our design objective is to maximize the quality of experience (QoE) at the user end under a limited cache server storage when considering the different channel condition among users. More specifically, the proposed strategy...
chapter
This paper presents a novel MPEG media transport (MMT) system based Desktop-as-a-Service (DaaS) system. Compared with the legacy virtual desktop infrastructure (VDI) based DaaS systems which consider the screen as a combination of various elements (such as text, images, icons etc.) and maintain multiple data channels for communication, the new system treats the desktop screen rendering as a video...
chapter
One key issue in the content delivery network service is efficient and effective video quality assessment. Yet the legacy method obtaining the results via detailed calculation based on the original sequence or subjective experiments which lacks efficiency. In this work, we developed a compact feature based solution that allows for on-demand quality assessment with limited light references. Compact...
chapter
MPEG has developed a new multimedia transport protocol namely MMT for heterogeneous network transport. Considering the characteristics of both broadcast network and internet, MMT has many advantages compared to traditional transport protocols like MPEG2-TS, RTP and so on. Although MMT has defined a detailed transport protocol for broadcast delivery, the broadband transport protocol of MMT has not...
chapter
In this work, a single input multiple output (SIMO) transcoding architecture is proposed. SIMO will benefit the mobile edge computing (such as HTTP Live Streaming requiring multiple copies of the video streams at different quality levels) without resorting to the legacy transcoding that video stream is completed decoded and encoded multiple times without exploring the compressed information. Leveraging...
chapter
For the next generation mobile video broadcasting, especially in-band solutions that serves the mobile devices, a limited feedback scheme via cellular channel polling is feasible to give accurate real-time information on the broadcast receivers' channel erasure rate, and decoding buffer status. In this work, we propose an AL-FEC coding degree scheme based on this feedback, to achieve a better decode...
chapter
Customized presentation is gaining more popularity. The MPEG media transport (MMT) system provides flexible media unit encapsulation and comprehensive control signaling to support multiple content types that may be useful during the customization. Existing legacy methods, however, did not take into account relations within media asset and the combination of diverse media components. Furthermore, considering...
chapter
The rapid growth of video in wireless networks is a crucial issue to be addressed by content providers. Nowadays, an emerging and promising trend is the development of solutions aimed at maximizing the quality of experience (QoE) of end users. However, the prediction of the QoE perceived by users in different conditions remains a major challenge. In this paper, we propose a two-layer hierarchical...
chapter
This paper introduces a novel content classification scheme in video-on-demand (VoD) based on the emerging standard of MPEG media transport (MMT). Content classification is necessary and reasonable, due to the fact that a better user experience may be obtained if the requested video is organized and presented in different ways according to various user requirements and/or video popularities. For this...
chapter
Today, when the content provider transmits a video, he usually uses forward error correcting to protect the packets which caused a lot of redundancy. If we know parts of the media stream are more important than others, we can uses bandwidth more efficiently. In this paper, we analyze the structure of the video stream, the frame types and the dependence among frames and propose an optimized scheme...
chapter
This paper introduces a 2-D index map coding of the palette mode in screen content coding extension of the High-Efficiency Video Coding (HEVC SCC) standard to further improve the compression performance. In contrast to the current 1-D search using RUN to represent the length of matched string, we bring the block width and height to describe the arbitrary rectangle shape. We also use the block vector...
article
Liver International > 34 > 9 > 1428 - 1444
Background & AimsThe metabolic pathway disturbances associated with hepatocellular carcinoma (HCC) remain unsatisfactorily characterized. Determination of the metabolic alterations associated with the presence of HCC can improve our understanding of the pathophysiology of this cancer and may provide opportunities for improved disease monitoring of patients at risk for HCC development. To characterize...
article
Cancer Immunology, Immunotherapy > 2013 > 62 > 4 > 737-746
Hepatocellular carcinoma (HCC) is a difficult to treat cancer characterized by poor tumor immunity with only one approved systemic drug, sorafenib. If novel combination treatments are to be developed with immunological agents, the effects of sorafenib on tumor immunity are important to understand. In this study, we investigate the impact of sorafenib on the CD4+CD25− effector T cells (Teff) and CD4+CD25+...
