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Networked teleoperation with haptic feedback is a prime example for the emerging Tactile Internet, which requires a careful orchestration of haptic communication and control. One major challenge in this context is how to maximize the user's quality-of-experience (QoE) while ensuring at the same time the stability of the global control loop in the presence of communication delay. In this paper, we...
It has been found that stochastic resonance can filter out the image noise and enhance the image. However, since the stochastic resonance has a characteristic that the high frequency energy is shifted to the low frequency, the denoised image will lose detail and become blurred. Because the noise and detail of the image are mainly distributed in the high frequency band, image denoising and detail retention...
LCL-type grid-connected inverter is largely utilized in renewable generation system due to high harmonic suppression. In order to tackle the resonance issue induced by LCL-type filters, grid-side current feedback active damping method (GCFADM) without extra sensors has been extensively investigated. However, the damping characteristic under GCFADM has not been fully evaluated. In this paper, an improved...
Due to the open access nature of wireless communication environment, physical layer security has brought increasingly high attention in recent years, attempting to protect the confidential communication away from eavesdroppers. In contrast to the current secrecy designs, which generally exploit the spatial Degree-of-Freedom (DoF) (e.g. MIMO and cooperative relay approaches) or the temporal DoF (e...
The emerging 5G networks will enable control-oriented applications where sensors, actuators, processors and controllers are geographically distributed and wirelessly connected. One major challenge of networked control systems (NCSs) is how to guarantee the stability of all control loops in the presence of communication delay. Addressing this problem, the control community generally focuses on designing...
For the problem of strong noisy interference in the data detection of the partial discharge (PD) signals, this paper proposes a self-adaptive technique for PD signal denoising with automatic thresholding determination based on variational mode decomposition (VMD) and wavelet packet transform (WPT). Firstly, VMD can decompose noisy signal into several modes, which are compactly around a center pulsation...
Recently, the IEEE P1918.1 standardization activity has been initiated for defining a framework for the Tactile Internet. Within this activity, IEEE P1918.1.1 is a task group for the standardization of Haptic Codecs for the Tactile Internet. Primary goal of the task group is to define/develop codecs for both closed-loop (kinesthetic information exchange) and open-loop (tactile information exchange)...
Continuous evolution of virtualization-related technologies have benefit greatly flexibility and reliability of software system. However, although virtualization removes binding between application and server underneath, it complicates the regular runtime hierarchy into an intricate structure, where cross-layer monitoring and holistic evaluation becomes challenging. Currently lots of monitoring practices...
In this paper, signal integrity (SI) and EMI aspects of a novel Flyover Quad Small Form Factor Pluggable (Flyover QSFP) connector is compared to a traditional QSFP connector which are used in 28/56 Gb/s applications. The flyover technique can overcome the limitation of high insertion loss associated with standard surface mount QSFP connectors that use PCB Microstrip traces. In flyover QSFP, substituting...
In this paper, a kind of theoretical method of how to find out the dominant cladding modes in the all in-fiber interferometer is proposed. The relationship between the cladding modes spatial frequency and its modal order and sensing optical fiber length are simulated. It can be found that the fiber length increasing can make the value of the dominant cladding spatial frequency linearly increase. The...
Because that the taxi industry generally appears a series of problems such as “difficult to take a taxi”, “high part money”, and the consumption demand presents the multi-level diversification trend as people income growth as well, the tailored taxi arose, remitting the contradiction of supply and demand of taxi service problems and providing people with a variety of service. But in the meantime,...
In high-speed acquisition system, timing sequence of sampling gate signal and SYNC reset signal may affect synchronization between high-speed acquisition boards (called board synchronization). The problem of board synchronization can be solved by delaying these two signals. In order to ensure board synchronization, a scheme was proposed to estimate reasons for abnormal synchronization according to...
Query expansion has been widely used to select additional words that are related to the original query words in the field of information retrieval. In this paper, we present a novel query expansion method that jointly uses fuzzy rules and a word embedding similarity calculation. The expansion words are generated using a word embedding method and selected according to their semantic similarity to the...
Social media develop rapidly with a growing number of large-scale data generated. With big data, the demand for premiere content requires professional assessing and ranking system. Wechat, as the most popular social media platform, has become ubiquitous and important in China. Wechat public accounts ranking help business parts, government organs and users to approach high quality information effectively...
The project named after City-Eyes is based on the HBASE big data analyzing platform and the real-time-display technology with H5/CSS3, which could analyze data and result dynamically. The project is devoted to designing the online city-data-analyzing platform, with interacting in real time, filtering, analyzing and displaying data. In the view of filtering, we sample Wuxi and collect much information,...
For the comprehensive evaluation index system of sports teaching quality, this paper first obtains five indicators, including average score representing the overall level of the class, separation degree applying variance, students pass rate of the final exam, excellence rate and progress rate of teachers. Objective comprehensive evaluation value indicators of teaching quality are obtained through...
Next generation (5G) mobile communication systems has a goal of ultra-high peak data rate. Ultra-Dense Network (UDN) is viewed as one of the key technologies to meet this challenge. The trend of network densification brings more complex interference. To solve this problem, a novel user-centric virtual cell design is proposed. Considering the changes of virtual cell load, we propose a load-aware virtual...
Non-orthogonal multiple access (NOMA) has been investigated recently as a candidate radio access technology for the fifth generation (5G) mobile communication due to its high spectral efficiency (SE). Green radio (GR) which focuses on energy efficiency (EE) is becoming an inevitable trend. In this paper, we study the tradeoff between EE and SE in downlink NOMA systems. The tradeoff problem is formulated...
Power terminal communication access network (PTCAN) is an important network for smart grid applications due to its ability of monitoring and remotely controlling smart power distribution devices and carrying the consumer information. In this paper, a hierarchical genetic algorithm is proposed to plan and optimize the Industrial Ethernet based PTCAN. The key idea of the algorithm is to transform the...
A algorithm of fingerprint image segmentation is the essence of the whole fingerprint system, and this paper proposes an improved one which based on adaptive dynamic threshold segmentation algorithm. It ameliorates Otsu algorithm according to the unevenness of grey scale. This algorithm distinguishes the target from the background in the image with the combination of threshold segmentation and region...
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