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Recent statistics suggest that online social network (OSN) users regularly share video contents from video sharing sites (VSSes), and a significant amount of views of VSSes are indeed from OSN users nowadays. By crawling and comparing the statistics of same videos shared in both RenRen (the largest Facebook-like OSN in China) and Youku (the largest Youtube-like VSS in China), we find that the huge...
Lunar relay satellite (LRS) constellation is required for the exploration of the back and polar region of the Moon. In order to provide high coverage performance, generally we choose high circular or elliptical orbits for the relay satellites. Elliptical orbit constellation needs the minimum number of satellites to provide continuous coverage of the Moon's south pole region. But the circular polar...
The miss of context data is an inevitable problem of context information processing mechanism, the interpolation technique of missing data is also a research hotspot in data mining. However, the existing interpolation technique of missing data is not suitable for the flow data form of context information that does not make full use of data relevance between every collecting sensor. Moreover, that...
Neural amplifiers play a critical role in the bandwidth, power consumption, noise performance and area of wireless neural recording systems. This paper presents comprehensive analysis of neural amplifier design to optimize these performance characteristics. Amplifier architectures and feedback structures are analyzed to identify the best choice for implantable neural recording applications. Bandwidth...
Abstract-Non-binary low-density parity-check (NB-LDPC) codes can achieve better error-correcting performance than binary LDPC codes when the code length is moderate. In this paper, we give the different initial step for different modulation and present a hardware implementation of the extended min-sum (EMS) decoding algorithm for non-binary LDPC codes. Moreover, an FPGA simulation over GF(16) is given...
To alleviate the server bandwidth cost of online video sharing services, p2p delivering has been suggested as an effective tool with success already seen in accelerating individual sites. The numerous video sharing sites existed however call for a universal solution that provides transparent p2p acceleration beyond ad hoc solutions. More importantly, only a universal platform can fully explore the...
In this paper, we discuss the problem of inter-cell interference cancellation for uplink coordinated multipoint system based on non-binary transmission. Firstly, the design of coder, mapper, demapper and decoder for non-binary code modulation system has been analyzed. Then, the cooperative detection for multi-cell non-binary uplink is presented. The performance comparison based on simulation results...
Since user demand for a Video-on-demand (VoD) service varies with time in one-day period, provisioning self-owned servers for the peak load it must sustain a few hours per day leads to bandwidth underutilization at other times. Content clouds, e.g. Amazon Cloud Front and Azure CDN, let VoD providers pay by bytes for bandwidth resources, potentially leading to cost savings even if the unit rate to...
In this paper, we discuss the implementation problem of interference alignment with low complexity. Firstly, interference system model based on signal and interference space is analyzed. Then, the design of chordal distance based linear precoder and receiver filter based on the optimization problem of rank of interference space are presented. Simulation results confirm that the sum rate of linear...
This paper addresses the disturbance decoupling problem (DDP) of multi-valued logical networks by using the semi-tensor product of matrices and matrix expression of logic functions, and presents several new results on the DDP. First, in order to solve the DDP, an output-friendly subspace is constructed for the state space of the multi-valued logical networks. Second, based on the output-friendly subspace...
The simultaneous stabilization of a collection of Boolean control networks (BCN) is investigated in this paper, and several controllers are designed. The dynamics of each BCN is converted to a discrete-time bilinear system by using the semi-tensor product of matrices and matrix expression of logical functions, based on which the simultaneous stabilization of the collection of BCNs is then studied...
Key technologies of information reuse, which supports rapid collaborative design under network environment, are studied in this paper. The methods for integration modeling of information, the representation methods for information unit based on global view of the domain problem space, the model space and the active space in a design process, and the design process based on the hierarchy modeling strategy...
Partial cloud cover is a severe problem in the optical remote sensing images, it seriously affected the interpretation and the use of remote sensing images. So how to remove or to reduce haze region from remote sensing images, and how to restore the ground information below thin cloud regions, will become the essential part in improving the availability of the applications of remote sensing images...
With the increasing number of technology areas using Virtual Machine (VM) platforms, challenges exist in Virtual Machine migrating from one physical host to another. This paper presents the design and implementation of a novel Hierarchical Copy Algorithm (HCA) for Xen live VM migration. Based on the memory characteristics which will be transferred, the measuring time of working sets is shifted to...
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