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With the progress of the network and technology, the perfect combination of mobile intelligent terminal and internet, people are increasingly dependent on intelligent terminals. So, it was very necessary of a model for assessing the security performance of mobile intelligent terminals, especially to establish the objective model of the security performance of mobile intelligent terminal. In this paper,...
During the past decade, we have witnessed the pervasive penetration of mobile smart devices such as smartphones, tablets, and wearable devices, which significantly enrich Internet applications and improve user experience. In the foreseeable future, mobile smart devices are predicted to take up over 50% of global devices/connections and surpass 4/5 of mobile data traffic by 2021 [1]. Such mobile smart...
Crowdsourced content sharing has become a fast-growing activity in today's online social networks, where contents of interest are created by diverse source users and conveyed over the network as friends view and reshare. The rapid and boundless propagation in a mobile crowd however often creates severe bottlenecks on the server side and incurs significant energy and monetary costs on the mobile side,...
This paper considers the beamforming design for a multiuser multiple-input single-output (MU-MISO) downlink with an arbitrary number of (context-specific) shaping constraints. In this setup, the state-of-the- art beamforming schemes cannot attain the well-known performance bound promised by the semidefinite program (SDP) relaxation technique. To close the gap, we propose a linear space-time beamforming...
Nowadays technology advances of wireless networking and mobile devices have made anytime anywhere data access become readily available. This also enables crowdsourced content capturing and sharing, especially for such multimedia data as video. One example is Twitter's Vine, which mainly target mobile devices, allowing users to create ultra-short video clips and instantly share with their followers...
The breakthrough progress of wireless charging technology provides a significant opportunity to solve the energy constrained problem in wireless sensor networks. However, most of existing mobile energy replenishment schemes either cannot well adapt to the high diversity of energy consumption or leave out of consideration about the fairness of charging response, and thus may still suffer from non-negligible...
In recent years, mobile sensing data are widely used for analyzing human's activities, usage patterns, emotions, health conditions and social relationships. In order to understand and analyze human's behaviors, several frameworks have been proposed to collect mobile sensing data. In this paper we extend previous works and design StarLog, which is a distributed and energy-configurable framework for...
As mobile devices and wearable devices become more pervasive in the past decade, natural human-computer interaction has drawn much attention among scientists. Hence, people pay more and more attention to new approaches and age of your choice. However, you will need to sign the English version of the form below. Technologies for bridging the human-computer barrier. Eyes-Free based human-computer interaction...
With the rapid development of mobile communication technology and mobile terminals enhancements, people pay more attention to the location-based service which is based on mobile networks and terminals. This paper presents a practical, feasible solution to implement the system of map function and positioning function according to the actual needs of the user. The implemented system includes many functions...
This paper proposed a visible light communication system (VLC) based on mobile devices. The transmitting and receiving units were realized by using the display screen and camera of the mobile device. The data were converted to screen code before transmission, and were captured by the camera and decoded from the screen code to original data. The proposed system can operate up to 80Mbps theoretically...
With the continuous development of mobile communication technology, wireless internet technology and mobile terminal technology, geographic space information have already widely applied to various fields in our daily life. The traditional Geographic Information System (GIS) is developing to the mobile terminal, the popularity of Android embedded system provide a excellent platform for the development...
CPU processor design involves a large set of increasingly complex design decisions Doing full, accurate simulation of all possible designs is typically not feasible. Prior techniques for sensitivity analysis seek to identify the most critical design parameters, but also struggle to handle the increasing design space well. They can be overly sensitive to the starting fixed point of the design, can...
A video super resolution algorithm is presented, which is based key frame and adaptive overlapped block motion compensation(AOBMC). First, the key frames are high resolution frames and are seen as references; non-key frames are low resolution frames and are up-sampled the same size as the key frames. Then, non-key frames are super resolved by adaptive overlapped block motion compensation using adjacent...
Cell phone based mobile healthcare is becoming a trend. This paper describes a generic framework of mobile healthcare system based on a Blue tooth enabled cell phone and proposes an open communication protocol between cell phone and the biomedical sensors. The communication protocol should complete the functions of data transmission, sensor management, state feedback, network maintenance, etc. It...
The cyclic prefix comb spectrum code division multiple access (CP-CS-CDMA) has comb spectrum in frequency domain. Its different code groups can be separated with a simple hopping accumulator. In the paper, we combine OFDMA and CP-CS-CDMA, and propose a new multiple access scheme, hybrid multiple access (HMA). Then we propose a new reuse partitioning system with HMA. The cell of the system has two...
This paper reports the performance of a downlink of a multiuser MIMO system which uses a successive beamforming broadcasting scheme. The investigations take into account the effects of mutual coupling that is present in receiving antennas. It is shown that that the mutual coupling changes the received signals statistic properties and impacts the co-channel interference component. The overall mutual...
This paper reports the performance of Block Diagonalization (BD) scheme for different array antenna structures used in a multiuser Multiple Input Multiple Output (MIMO) system. The assessment is performed in terms of sum rate capacity. Theoretical analysis as well as computer simulations shows that the spatial correlation downgrades downlink performance of BD. The simulations also reveal that the...
This paper reports investigations into capacity of a multiuser Multiple-Input Multiple-Output (MIMO) system which uses a block diagonalization (BD) scheme with antenna selection at mobile stations (MSs). It is shown that the antenna selection at MSs improves capacity while at the same time it offers an effective solution to hardware size and cost. Also it is advantageous from the point of view of...
A literature review of electronic commerce research in China is presented in this paper. The articles are searched with the keyword “electronic commerce” separately from the core journals and the Engineering Index (EI) journals of the China Academic Journals Full-text Database at www.cnki.net. The distributions of articles published by the core and the EI journals by year and topics are analyzed....
For more and more data services in GPRS networks, through analysis of both the GPRS network structure and the data features of Gb port, introducing into the analysis flow of multi-level, analysis and research the network data from the bottom-up.
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