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Here, we exploit implementation of optical losses to develop innovative optical phenomena and devices, for example, mimicking exceptional points and their unique transport characteristics in optics at both nano and macro scales.
The Optimized Link State Routing (OLSR) protocol has received considerable attention as a viable routing solution for mobile ad hoc networks. However, OLSR suffers from high routing and computational overhead, resulting in significant energy consumption and is quite detrimental to the lifetime and service duration of mobile ad hoc networks. In this work, we provide a detailed analysis of the OLSR...
Heterogeneous network (HetNet) has been studied as a promising technology to boost the system throughput. A new upper boundary of coverage probability (CP) is derived, which is the one of cooperative communication between two base stations (BSs) for downlink HetNet. For the tractability, only the cooperation between two base stations in the same tier of HetNet is considered and a model is set up,...
We show nanoscale optical engineering in the complex dielectric permittivity plane to realize photonic synthetic matters on-a-chip, by which unidirectional reflectionless light propagation and asymmetric mode conversion have been experimentally demonstrated at the exceptional point.
This paper propose an ANSYS system based on finite element method to simulate welding temperature field. The ANSYS system can help avoid large amount of time and resource consumption to accumulate experiences in the traditional method which is based on experiments. The system can efficiently determine parameters to control temperature field, and effectively analyze and identify the impacts of welding...
Recently the filtering design based on probability density function become an important method to solve Non-gaussian filtering. However, the existing methods are difficult to use in practice because the performance of non-negative cannot be guaranteed or owning to the highly conservative. So this paper make symmetric K-L distance as a new performance index function and give constraint range of the...
On the basis of the daily precipitation data statistics of 17 meteorological stations from 1953 to 2010 in Jiangxi Province, this paper studied the interannual variation characteristics of maximum daily precipitation and its spatial-temporal characteristics in Jiangxi Province with the application of GIS technology and Mann-Kendall (M-K) statistic method. The results showed that there was a slightly...
In order to constructure and promote the intelligent grid demonstration community project, this paper presents the communication network framework of Advanced Metering Infrastructure (AMI). Firstly, the communication network layer of AMI is introduced. Secondly, the commonly communication technologies are studied and compared. Then, the bandwidth needed in the intelligent grid demonstration community...
A major drawback of evolutionary optimization approaches in the literature is the apparent lack of automated knowledge transfers and reuse across problems. Particularly, evolutionary optimization methods generally start a search from scratch or ground zero state, independent of how similar the given new problem of interest is to those optimized previously. In this paper, we present a study on the...
The electric vehicle is the main development direction for future new-energy vehicles. And the charging stations' planning and construction are the premise to promote the electric vehicle's use. In the light of the intensive traffic on the urban trunk road and its great charging demand of electric vehicles, this paper constructs a planning model of charging stations on the trunk road. The impact of...
Distribution grid will be impacted to some extent when large scale electric vehicles (EV) are discharging simultaneously. Firstly, the factors related to the discharging power of EVs are discussed. Secondly, the probability density statistic models of discharging time and discharging duration are built according to the traffic pattern of X city in China and the national household travel survey of...
This paper presents a novel method for electric vehicle charging station planning based on weighted Voronoi diagram. First, the traffic flow of each intersection node is used to represent the road network traffic. The number of charging stations is estimated in accordance with the capacity of conventional-standard charging station. The initial locations are determined by using coordinate method. Then,...
In this paper, a power management circuit (PMC) for wireless powering capsule endoscopy is presented. The PMC includes a RF Limiter, a CMOS rectifier and a low dropout (LDO) regulator. A bandgap circuit used as reference for LDO is optimized carefully and has a more than −50 dB PSRR at 2 MHz, which can effectively suppress the ripple of rectifier output used as input voltage of LDO. A voltage controlled...
In this paper, an efficient wireless power transmission system for capsule endoscopy is presented. The system includes a transmitter and a receiver with a power management circuit (PMC). A transmitter used as power provider consists of a driver circuit and class E amplifier. Alternating magnetic field transmits the power wirelessly between transmitting coil and receiving coil. The receiver is designed...
We have designed, fabricated, and tested a CMOS compatible silicon waveguide system that demonstrates nonreciprocal light propagation on-chip, by mimicking microscopic non-Hermitian optical potentials for guided light and thus spontaneously breaking parity-time symmetry. Experiments were performed at 1.55 µm wavelength for potential telecommunication applications.
The paper proposed a method of locating and sizing of charging station for electric vehicle based on grid partition. This method is aimed at minimizing the users' loss on the way to the charging station, zoning the planning area with grid partition method, and choosing the best location of each partition in GA (Genetic Algorithm) on the consideration of traffic density and charging station's capacity...
Recently, the fast development of GPU (graphic processing unit) provides a novel efficient platform for SAR (synthetic aperture radar) raw echo signal simulation. Based on the platform, this paper presents an efficient raw echo signal simulation method for missile-borne SAR. In the method, scene data is firstly segmented into data blocks according to different areas in azimuth track. Then the simulation...
This paper proposes an algorithm to detect the magnetizing inrush of two double-winding converter transformers in bipolar high voltage direct current (HVDC) transmission project by analyzing the waveform characteristics of the resultant current in the grid side. Delivery test of transformer may remain the different polarity of remanent flux in each converter transformer, which causes the inrush directions...
This paper investigates the problem of OOSM filtering for the system with arbitrary-step-lag OOSM. A new direct OOSM filtering algorithm is devised, based on the built equivalent measurement. The proposed algorithm takes fully consideration on the correlation of the equivalent measurement noise and the previous estimations, so it is optimal in the sense of MMSE. Finally, a simulation with two scenes...
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