The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
A novel adaptation strategy is proposed for Acoustic Echo Cancellation (AEC). The new algorithm firstly partitions the adaptive filter into several blocks and the successive blocks with the maximum h norm are considered to be the active blocks. Then the coefficients of the active blocks are adapted with large update probability to ensure the identification accuracy while the zero coefficients are...
We study the effect of multipath component and bandwidth on the performance of the existing time-reversal(TR) based fingerprinting localization approaches. We find that localization accuracy of these approaches deteriorates with limited bandwidth. To improve the localization performance, we propose a high resolution time reversal approach, i.e., TR-Phase, through jointly considering two unique location-specified...
A novel scheme is proposed to locate the dispersive region, whose location is essential for parallel echo cancellation. In the scheme, a first filter adapts to a subsampled version of the input signal to roughly identify the impulse response. After each adaptation, a squaring function and a moving window integration procedure are performed on the first filter, and the region with the maximum integration...
In this study, we try to find a method to investigate the relationship between stair's slope and ascent/descent gaits in stairs. With the method, we can speculate the stair slope of a particular stair from a subject's gait so that we can use it to be an initial parameter for estimating the vertical distance the subject has climbed. In this way, this study could provide a practical method to realize...
CSP (Chip scale package) LEDs have drawn intensive attention lately since it provides multiple times power density than traditional packages. Higher power density brings possibilities of better light control and more industrial applications in UV LED applications. Therefore, a chip scale LED package of 2.0 × 1.6 mm, named 2016, has been designed and fabricated for UV applications. The LED package...
Ruthenium dioxide (RuO2) thin films can be used as the electrode material for future technology nodes. In this work, atomic layer deposition (ALD) was used to deposit thin films of RuO2 on SiO2 using bis-(ethylcyclopentadienyl)-ruthenium [Ru(EtCp)2] as the precursor and oxygen (O2) plasma as the reducing agent. The thermal stability of the deposited films were investigated in the N2 ambient and in...
This research presents a multi-operator retargeting mechanism termed "SCAN", in which seam carving, cropping, adding seams and normalization (scaling) are applied on images in an automatic manner. The content-based cropping will first be used to remove insignificant portions on sides. Then a new seam carving algorithm based on both the global saliency and local saliency is proposed to rid...
To reduce CPU, memory and bandwidth usage as cloud platform security consumption, and to prevent vulnerabilities that brought in by VM based antivirus software, we propose an agentless processes monitoring architecture for cloud platform. To demonstrate this architecture, we modified KVM kernel, programed OpenStack plugins, added security module on both management and compute node in a cloud platform...
Multi-core digital signal processor (DSP) and system on chip (SoC) are widely used in LTE base band these years. A companion paper (Hao Xiang et at., 2013) [1] presented a kind of 3 layers multi-core DSP/SoC software architecture, and mentioned the common IPC is the key for this flexible architecture. This common IPC is detailed in this paper. LTE system has hundreds of configurations from different...
Dome lens formation method through dispensing highly thixotropic encapsulant [1] has been introduced into LED industry for several years. It's cost-effective and concise in production flow, but not qualified yet when accurate optical properties are needed. Most of directional fixtures therefore require LED packages with precisely molded dome lenses, which need complex and expensive processes. In this...
Multi-core digital signal processor (DSP) and system on chip (SoC) are widely used in Long Term Evolution (LTE) L1 development since 5 years ago. The corresponding multi-core software architecture design is a big challenge. Nowadays, a traditional 3 layers architecture is very popular. Its 3 layers are accelerators driver layer, OS layer and application layer. One shortage of this architecture is...
To address the uncertainty of production environment in knowledgeable manufacturing system, an interoperable knowledgeable dynamic scheduling system based on multi-agent is designed, in which a knowledge representation with a series of problem characteristics for various scheduling problems is adopted and problem-based function modules are constructed by using agent technology. An adaptive scheduling...
Aiming at the defects of BP neural network, analyzed the disadvantages of the genetic algorithm and the common quantum genetic algorithm. Used the diversity of population and the rapidity of convergence of the real-number coded double-chain quantum genetic algorithm which was combined with BP neural network to modify the weights and thresholds of the neural network, and the modified neural network...
The mathematical model of Three-phase voltage sources Pulse Width Modulation (PWM) DC/AC inverter is nonlinear, in view of the traditional linear control strategy can not meet the requirements of designing high-performance inverter. What's more, when the loads will be not pure resistive load, the inverter further requires controller possess high-performance. This paper proposes a nonlinear control...
The purpose of communication community structure detection in a network is to cluster weighted complex network. By learning from traditional clustering algorithm, OPTICS, an algorithm is designed to detect communication community and analyze its structure. This algorithm considers the effect and detects communication community based on its communication intensity. The detection result is organized...
This paper reports a new hyperchaotic system by adding an additional state variable into a three-dimensional chaotic dynamical system. Some of its basic dynamical properties, such as the hyperchaotic attractor, Lyapunov exponents, bifurcation diagram and the hyperchaotic attractor evolving into periodic, quasi-periodic dynamical behaviors by varying parameter k are studied. Numerical simulations are...
This paper deals with application of fuzzy least square method to the land-cover classification of remotely sensed data. The proposed method has a considerable advantage of extracting the reflectance of spectral bands for each category from pixel data and thus avoiding difficulties in electing training sets for each land-cover class when the class number gets large, which exist in conventional supervised...
This paper brings forward an autocorrection algorithm for noise texts based on modularity optimization. By noise texts we mean those documents in text corpus being distributed to a wrong category. Firstly, the document- similarity network is constructed, in which each node represents a document. If two nodes are similar in content, they are connected with a weighted edge, and their similarity is the...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.