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Caching has emerged as a vital tool in modern communication systems for reducing peak data rates by allowing strategic contents to be pre-fetched and stored locally at end users' devices. With the shift in paradigm from homogeneous cellular networks to the heterogeneous ones, the concept of data offloading to small cell base stations (SBS) has garnered significant attention. Caching at these small...
Localized surface plasmon resonances (LSPR) give rise to enhanced fields near the interface between the metallic and dielectric boundary. Strong excitation intensities can lead to the formation of photothermal bubbles around plasmonic nanoparticles. Numerical simulation is indispensable in predicting and analyzing plasmonic bubble as the measurement is always too expensive or too complicated to be...
The power grid with renewable energy as the main power can be called the renewable energy grid. In view of the fact that the uncertainty of the power generation in a renewable energy grid is very prominent, power grid dispatching control which takes the power balance as the primary task must adopt targeted response measures. Based on the operation mechanism of energy storage, a mathematic model of...
The skeletonization accelerated multilevel fast multipole algorithm (MLFMA) in terms of surface integral equation (SIE) is extended to the method of moments (MoM) solution of volume integral equation (VIE). Boxes at the finest MLFMA level are recursively divided into smaller ones and the associated rank-deficient submatrices are approximated by skeletonization. Numerical experiments are conducted...
The objective of this paper is to extend the relaxed conditions on the existence of the backstepping controllers and observers obtained in a recent literature to the case of parabolic Partial Differential Equations (PDEs) with the same diffusion. Moreover, an observer-based output feedback controller is designed for the considered systems with the new conditions. Then, the corresponding exponential...
Face recognition methods utilizing Sparse Representation based Classification (SRC) and Collaborative Representation based Classification (CRC) have recently attracted a great deal of attention due to inherent simplicity and efficiency. In this paper, we introduce the Large Margin Nearest Neighbor (LMNN), which learns a Mahalanobis distance metric that is applied, to SRC and CRC as the locality constraint...
In this paper, we study upper bounds on the sum capacity of the downlink multicell processing model with finite backhaul capacity for the simple case of 2 base stations and 2 mobile users. It is modeled as a two-user multiple access diamond channel. It consists of a first hop from the central processor to the base stations via orthogonal links of finite capacity, and the second hop from the base stations...
This paper studies the issue of the almost exponential stabilization for stochastic dynamical systems (SDS) by using event-triggered impulsive control (ETIC). The ETIC scheme is designed by setting three levels of event conditions. The criteria on almost exponential stabilization are derived for the controlled SDS. Thus the almost exponential stabilization is achieved for SDS under the designed ETIC...
A body sensor node system-on-chip (SoC) is designed and implemented. The SoC integrates analog front end (AFE), a high-resolution analog-to-digital converter (ADC), an RF-to-DC rectifier, a low dropout (LDO) regulator, and a digital signal processing (DSP) block. The batteryless SoC is powered by RF of 2.45GHz. The rectifier generates 1.8V output and the LDO converts the voltage to stable 1.6V supply...
There has been a defining problem of early warning threshold in power project investment, the accuracy and timeliness of early warning also can not be guaranteed. This paper is based on the optimal segmentation theory, combined with the actual situation of power project investment, splits historical engineering data optimally so as to determine the better segment number and give the early warning...
Caching popular contents in the base stations(BSs) is a promising way to reduce backhaul congestion by improving the transmission efficiency of the content dissemination. In this paper, we consider the scenario of BS cooperation for a cacheenabled HetNet where the helpers with cache are distributed around the MBSs. To evaluate the dependence between different tiers, we model the locations of the MBSs...
We report a security analysis of the asynchronous-logic (async) quasi-delay-insensitive (QDI) Weak-Conditioned Half-Buffer (WCHB) cell approach against the side-channel differential power analysis (DPA) attack. When compared to the synchronous-logic (sync) standard cell approach, the WCHB cell approach is more power-balanced during the logic switching due to the unique features as follows. First,...
In time difference of arrival (TDOA) location system, the cooperative localization algorithm based on Particle swarm optimization (PSO) and Taylor series not only solves the problem that particle swarm is easy to fall into local optimum, but also avoids the inappropriate initial value which leads to non convergence of Newton iterative algorithm. In practical applications, the coordinate information...
In this paper, we proposed a utility-based energy-efficient (UEE) resource allocation algorithm in downlink OFDMA heterogeneous networks (HetNets) with mixed traffic. The resource allocation problem is formulated as a mixed integer nonlinear programming (MINLP) problem first. Then an iterative algorithm is proposed to optimize the resource block (RB) scheduling and power allocation alternatively,...
An achievability scheme is proposed for the multiple access diamond channel with two destinations, where each base station has cached a part of the messages intended for the destination nodes. This achievability scheme is the generalization of the scheme of sending correlated codewords with the superposition structure proposed for the 2-destination multiple access diamond channel. It is shown that...
Millimeter wave (mmWave) is a promising approach for the fifth generation cellular networks. It has a large available bandwidth and high gain antennas, which can offer interference isolation and overcome high frequency-dependent path loss. In this paper, we study the non-uniform heterogeneous mmWave network. Non-uniform heterogeneous networks are more realistic in practical scenarios than traditional...
In this work, we address the problem of detecting the presence of target signal while rejecting potential deceptive jamming under the multiple-input multiple-output (MIMO) radar with frequency diverse array (FDA) as the transmit array. The problem at hand is solved resorting to the generalized likelihood ratio test (GLRT); at the design stage we characterize the set where the false target may lie...
The fast algorithm which combines interpolative decomposition (ID) and the multilevel fast multipole algorithm (MLFMA) is extended to the method of moments (MoM) solution of volume integral equations (VIE) from that of surface integral equations (SIE). Boxes in the finest level in MLFMA are further divided and the rank-deficient submatrices of the near-field interactions are approximated by the data...
The reliability levels of SG-III component systems are directly relative to the global reliability and stability of SG-III laser facility. The systems consist of mass identical subsystems generally, whose integration process is complicated, and the evaluation of reliability growth is hard to perform directly. Therefore, accounting for subsystems characterized by small samples, hybrid fix modes and...
We propose a Success Rate (SR) estimation model for Correlation Power Analysis (CPA) attack on AES-128 encrypted devices. The SR is a ratio between the number of successful attacks to obtain secret key and the total number of attacks. There are two key features in the proposed model. First, we derive the Second Order Standard Deviation (SOSD) of the processed data to analyze their switching activities...
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