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In this paper, we propose a novel m-th best average biased received power (ABRP) user association (UA) scheme for K-tier heterogeneous networks (HetNets), where a user is associated with the base station (BS) having the m-th strongest ABRP. For this novel scheme, by using stochastic geometry and modeling the positions of network elements in each tier as a homogeneous Poisson point process (PPP), we...
In this paper, we present a design and control approach of a modular off-board actuation system with mono-articular hip exosuit, enabling the instantaneous assistive profile modification of magnitude, shape, and timing. The off-board system consists an actuation unit with two degrees of freedom that can transmit forces to our soft exosuit via Bowden cables. To perform accurate force tracking and cable...
The position and speed detection of maglev train is critical to train control system. The common methods of speed measurement include speed sensor measurement and speed sensorless measurement. The use of sensorless method can significantly reduce costs and it's not influenced by various environmental factors. In this paper, a high frequency pulsating voltage injection method is proposed for the PMLSM,...
This paper proposes a robust fault detection observer based on zonotopes for discrete-time uncertain systems with sensor faults and unknown but bounded uncertainties. The main advantage of this method is that the observer gain of the robust zonotopic observer is designed to be robust against bounded uncertainties while being sensitive to faults. In order to detect sensor faults with low magnitudes,...
Biosensor technology is one of the hot research topics in recent years, and has been researched earlier in food analysis scope, but its application in the scope of food nutrition labels is immature. This paper summarizes the application of biosensors in the analysis of food nutrition labels, including carbohydrate, amino acid, vitamin C, fat and so on, and forecasts its development prospect in food...
This paper proposes an overall design for a smart power utilization system, and presents a realizable method based on practices in pilot districts in Chongqing. This design can effectively achieve data transmission and communication among many subsystems, while information management, monitoring, and controlling of smart power utilization districts in the subsystems are divided into different security...
This paper investigates the multi-user full-duplex massive multiple-input multiple-output (MIMO) amplify-and-forward (AF) relaying system with low-resolution analog-to-digital converts (ADCs), where the zero-forcing transmitting/ zero-forcing receiving (ZFT/ ZFR) precoding scheme is employed. By modeling the loop-interference and quantization noise as additive noise, we perform the analysis of the...
Similar diseases are often caused by their similar molecular origins, such as disease-related protein-coding genes (PCGs). And nowadays, the function of PCGs has been widely studied on a gene function network, where each node represents a gene and each edge indicates an interaction between pair-wise genes. Therefore, functional interaction between disease-related PCGs should be exploited to measure...
This paper focuses on energy efficiency of device-to-device (D2D) underlay massive multiple-input multiple-output (MIMO) hybrid networks with power beacons (PBs). The D2D transmitters harvest the energy from the signals of dedicated power beacons, but also the ambient radio frequency (RF) interference of cellular users (CUs). The inverse power control schemes are employed at D2D transmitters. For...
The traditional one-dimensional (1D) electromechanical impedance model simplifies the PZT as a thin bar, only considering the vibration in the axial direction, and the vibrations in other two directions are neglected. In this study, the vibrations of the PZT patch in x and z directions are taken into account to model the electromechanical coupling interaction between the PZT transducer and the host...
This paper proposes a novel self-healing control method for satellite attitude tracking based on simultaneous fault estimation and control design. The proposed method integrates the fault estimation and fault-tolerant control units in a dynamic system, which is less complex and more reliable than the separately designed self-healing architectures. In this paper, the model reference approach is used...
This paper studies the consensus problem of high-order multi-agent systems in weighted coopetitive networks. In the entire communication process, each agent can cooperate or compete with its neighbors, and the intrinsic interaction properties of the agents determine the cooperative-competitive weights between agents. We propose two types of protocols, i.e. the state feedback protocol and the output...
In this paper, an active fault-tolerant scheme with performance degradation is proposed in the presence of actuator saturation and fault. Firstly, the loss of control effectiveness fault is transformed into an virtual additive fault and then the effectiveness factors are estimated by a two-stage Kalman filter algorithm with a set of forgetting factors. In order to satisfy the output tracking performance,...
Microblog ranking is a hot research topic in recent years. Most of the related works apply TF-IDF metric for calculating content similarity while neglecting their semantic similarity. And most existing search engines which retrieve the microblog list by string matching the search keywords is not competent to provide a reliable list for users when dealing with polysemy and synonym. Besides, treating...
When the airborne weather radar detects low-altitude wind-shear field, the echoes of wind-shear field are usually covered by strong clutter. In this paper, a novel method of wind speed estimation of low-altitude wind-shear based on multiple Doppler channels joint adaptive processing approach is proposed. The method constructs reduced-rank adaptive processors aimed to distributed meteorologic target...
The pressure and horizontal velocity signals of a vector hydrophone are combined in passive range localization processing. The target in the ocean is moving at a constant speed and the track does not cross the receiver point. Range localization is achieved through four main steps. Firstly, the received pressure and particle velocity are processed together to restrain the isotropic noise. Second, the...
With the development of processor technique, more and more processor cores are integrated in a single chip to achieve higher performance requirements. Network-on-Chip (NoC) is the substitute for bus interconnection on many-core processor framework. In this paper, we propose a NoC based homogeneous many-core x86 processor architecture with distributed shared memory and high speed Network Interface...
In this paper, we consider the consensus problem of networks of agents with weighted cooperative-competitive interactions via nonlinear protocols. Each agent in the multi-agent system is endowed with a value representing its intrinsic interaction property, based on which, the cooperative-competitive interaction weights are decided. Two types of nonlinear protocols with weighted cooperative-competitive...
In this paper, we study how to effectively reduce the average end-to-end (E2E) packet delay in backpressure based scheduling in wireless multi-hop networks. We accordingly propose a virtual gradient based back-pressure scheduling algorithm, referred to as VBR. In VBR, intentional virtual queue, whose length (called virtual gradient) depends on the distance to destination, is first built at nodes in...
Physical location is an important characteristic for digital individuals, as it is widely used in location based services, such as navigation, advertisements, and recommendations. This paper focuses on the problem of inferring individual physical locations from their friendships in a social network. We represent individual locations with a few high frequency places to eliminate the noise influence...
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