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In this paper, the problem of fault detection is addressed for networked control system (NCS) subject to both random packet dropout and multi-rate sampled data, which is usually unavoidable. Since the networked control system suffers heavy resources competition and network congestion under the limited bandwidth, resulting in multi-rate sampling and data packet dropout. Observer based residual generation...
Automated driving has become increasingly viable through the deployment of a number of sensing technologies on vehicles. These intelligent transportation systems (ITS) employ sensors such as radar, camera and lidars for collision avoidance and vehicle-to-everything (V2X) communication links for active environment sensing. Since the available spectrum for vehicular systems is limited, spectrum sharing...
Machine-to-machine (M2M) communication is one of the latest technologies to support connectivity among numerous intelligent devices. The intelligence of M2M systems can be enhanced by incorporating visual sensor networks (VSNs) and utilising visual information. The conservation of energy within VSNs is one of the primary concerns for resource constrained scenarios, which can be achieved from targeted...
Automotive radar sensors typically apply waveforms with a fixed bandwidth. With the new 79 GHz automotive radar band a huge bandwidth of up to 4 GHz has become available, which is an ideal basis for the application of agile waveforms. This paper discusses an approach towards a frequency and bandwidth agile automotive radar sensor that allows to trade maximum range versus resolution. Measurement results...
Fully automated vehicles are currently under research and development and will become reality in the near future. Key enabling sensors in this area are automotive radars, which currently support driving comfort and crash prevention. These radars operate in the 24 GHz and 76–81 GHz bands as of today and occupy the spectrum heavily. Hence automotive radar sensors require immunity to interference of...
In this paper we propose a bidirectional front-end for resonating sensors with bandwidth control used to remove the high order oscillating modes. The electronic interface is based on an inverter working as amplifier biased by a voltage buffer, both realized in CMOS technology. The bandwidth of the amplifier can be tuned by varying a bias voltage which controls the high cut-off frequency of the front-end...
Military operators require relevant information from Intelligence, Surveillance and Reconnaissance (ISR) assets to make timely decisions and to issue effective responses to mission events. Today's sensing and Command and Control (C2) systems blindly collect and pass all available ISR data, which results in data overload that increases demand for communications bandwidth and processing power, with...
This paper investigates a signal area (SA) estimation method for spectrum measurements. The spectrum measurements is for estimating statistical information of spectrum usage and required latency is not very critical compared to spectrum sensing. SA denotes the area (in time/frequency domain) occupied by the primary user's signal. The traditional approach, which utilizes Fourier transform (FT) and...
In this paper, we use a Spectrum Sharing/allocation algorithm to implement a Cognitive Radio network without spectral awareness. This allows radio resources to be allocated to primary users and to secondary users in such a way that primary system and secondary system are aware of each other. By doing this, sensing of spectrum holes is avoided but the primary users will be protected and will always...
It is necessary to transmit the image from the ammunition platform to the terrestrial system in real time when the TV guided weapon strikes the ground target. For the large amount of HDTV images, due to the limited bandwidth of signal transmission, real-time transmission can't be realized. As an emerging theory, compressive sensing provides the possibility of real-time transmission of HDTV video signals...
More and more Advanced Driver Assistance Systems (ADAS) are entering the market for improving both safety and comfort by assisting the driver with their driving task. An important aspect in developing future ADAS and Automated Driving Systems (ADS) is testing and validation. Validating the failure rate of an ADS requires so many operational hours that testing in real time is almost impossible. One...
A fully-differential open-loop switched capacitor interface is presented in this paper for a ±30 g capacitive micro-accelerometer. Considering that input common-mode feedback capacitors in a fully-differential charge sensitive amplifier increase the gain of noise, a full-swing input common-mode feedback scheme is proposed in this work to minimize the feedback capacitance and reduce the noise. Moreover,...
Deploying composite applications to Fog nodes in a QoS-and context-aware manner is challenging due to the heterogeneity and scale of Fog infrastructures. Application components must be provided with the software and hardware capabilities they need. Communication links that support interactions between components must meet certain QoS (latency and bandwidth). On the other hand, different Fog and Cloud...
In this work, a capacitance-to-voltage converter based on a fully-differential transimpedance amplifier (TIA) with programmable gain and bandwidth for MEMS accelerometers is presented. It is aimed for a differential surface-micromachined comb-finger capacitive accelerometer, but can be used in many other capacitive sensor applications. The TIA has been designed in a 180-nm CMOS technology and it achieves...
In this paper, a new approach to event-triggered H∞ performance analysis of linear networked control systems is proposed. First, a new parametrization of event-triggering scheme is designed, in which a positive diagonal parameter matrix with n elements (corresponding to the dimension of the system under consideration) is introduced, resulting in different weights for each state component. Under this...
This paper proposed a new wide-bandwidth hybrid supply modulator for LTE-A power amplifier. The proposed wide-bandwidth hybrid supply modulator is for long term evolution (LTE)-advanced power amplifier. This proposed modulator uses simple linear amplifier structure to achieve 100MHz tracking speed. This proposed modulator proposes a bandwidth control to improve the efficiency of the supply modulator...
Usually energy-detection based spectrum sensing techniques for Cognitive Radios need, as preliminary operation, the spectrum segmentation in smaller sub-bands, in order to apply test statistic over each sub-band rather than over the entire span, resulting in a sensitivity and selectivity improvement of the output. Despite uniform subdivision is the easiest way, the problem resides on the optimal sub-band...
The next industrial revolution, generally referred to as Industry 4.0, is already here. This envisions a rapid transformation in the design, operation and service of manufacturing systems, where machines, sensors and actuators are interconnected in the factories in order to enable spontaneous collaboration, monitoring and control. Currently, Cyber-Physical-Systems (CPS) use regular Internet protocols...
Priority queue-based techniques improve spectrum efficiency by allocating the underutilized spectral bands (holes) of primary users to secondary users in Cognitive Radio Networks (CRN). This article proposes a Distributed Precedence Queuing scheme for Efficient Spectrum Management (DPQESM) in CRNs. The proposed method classifies the available channels into periodic and aperiodic based on the state...
Networked control systems (NCS) have attracted considerable attention in recent years. While the stabilizability and optimal control of NCS for a given communication system has already been studied extensively, the design of the communication system for NCS has recently seen an increase in more thorough investigation. In this paper, we address an optimal scheduling problem for a set of NCS sharing...
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