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The ubiquitous connectivity of the low-end devices in the Internet of Things (IoT) brings new challenges over the traditional wireless sensor networks’ architectures. Such challenges require not only security and privacy-related features, but also solutions to handle the ever-growing amount of data transferred over the network. However, performing such tasks on resource constrained devices is not...
This paper presents the design for a prototype tactical dynamic spectrum access (DSA) mobile ad hoc network, where the network is organized into clusters operating on a single frequency. The frequency may be changed autonomously by the network in response to jamming or interference, after some frequency switching delay. The network node design is implementable on a software defined radio (SDR), such...
This paper presents a high-resolution near-field magnetic sensing system for nondestructive inspection applications of safety and security. The system includes a probe chip based on a 0.18-μm 5-metal-layer CMOS process technology and a micro-position calibration mechanism. The probe chip includes a magnetic pick-up coil followed by a 3-stage low-noise amplifier to amplify the induced voltage on the...
Content addressable memory (CAM) performs parallel data search at the cost of high area and power penalty. We propose a high-speed 6T-ReCSAM (Reconfigurable CAM/SRAM) with new energy efficient sensing technique. Proposed implementation is compatible with compact 6T-SRAM foundry bitcells. Test-macro of 8Kb is implemented in 28nm FDSOI CMOS and reaches up to 1.56GHz at 0.9V with 0.13fJ/bit energy consumption...
Mainstream FPGAs and programmable SoCs employ different countermeasures during configuration and runtime to mitigate physical attacks. However, it has been demonstrated that sophisticated active attack techniques, such as laser voltage probing, can still bypass the bitstream protections during the configuration phase. On the other hand, although the security monitoring IP cores provided by FPGA vendors...
This paper proposes a fast and compact implementation of a virtual anemometer on a low-cost Field Programmable Gate Array (FPGA) platform. Such an anemometer is to be used within Wind Energy Conversion Systems (WECS) to perform Maximum Power Point Tracking in a non-iterative way, thus reducing dead time and increasing yield. The proposed virtual anemometer relies on a Growing Neural Gas (GNG) Artificial...
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...
Wirelessly networked systems of implantable medical devices endowed with sensors and actuators will be the basis of many innovative, sometimes revolutionary therapies. The biggest obstacle in realizing this vision of networked implantable devices is posed by the dielectric nature of the human body, which strongly attenuates radio-frequency (RF) electromagnetic waves. In this paper we present the first...
Conventional lamps plug directly in AC power; however, LED lighting systems require drivers with diverse specifications, which increases design complexity and manufacturing costs. This study developed a universal architecture for driving multi-power LED panels with the ability to automatically track the output voltage. Continuous monitoring of the LED level also makes it possible to use buck conversion...
Adaptive voltage positioning (AVP) technique has been widely used in voltage regulator (VR) applications. In this paper, a digitally controlled buck converter with the proposed current sensor-less AVP technique is presented. Without the need for sensing or sampling the loading condition, the proposed control architecture utilizes the error signal of the digitalized controller to obtain the current...
Small satellites (Small Sats) (i.e., satellites weighing less than 100 kg) are attracting interest in the Department of Defense (DoD), Intelligence Community (IC) and commercial market for space-based data collection (e.g., imaging) and communication (e.g., links or relays). In fact, many emerging missions use constellations of many (e.g., greater 100) Small Sats for these purposes. Small Sats can...
Nowadays, the majority of the monitoring devices used in clinical settings is limited to specific applications and powered by highly specialized microcontrollers and pre-programmed DSP systems. Moreover, these kind of devices are usually connected to a high capacity battery to operate in case of power blackout. Nevertheless, considering that all the measured bio-signals depends from an amperometric...
Process variability is known to be increasing with technology scaling in IC fabrication, thereby degrading the overall performance of the manufactured devices. The current paper focuses on the variability effect in FPGAs and the possibility to boost the performance of each device at run-time, after fabrication, based on the individual characteristics of this device. First, we develop a sensing infrastructure...
This paper describes the design, experimental assessmant and Software Defined Radio (SDR) implementation of a Secondary User (SU) link for the IEEE DySPAN Challenge 2017. The objective is to successfully discern the behavior of and coexist with a Primary User (PU), whose channel access patterns vary over time. For that end, we utilize sensing, deep learning and dynamic optimization.
In this paper we present an extended fault injection approach to configuration memory of SRAM-based FPGAs consisting of inter frame many bits upsets to be used as an evaluation tool for attack detection capability and countermeasure effectiveness in security sensitive design modules. The work presented in this paper is twofold. First, we present the concept of a fault detection mechanism for SRAM-based...
The controller of a Conventional Unity Power factor correction (PFC) rectifier needs three feedback signals sensed from the converter, i.e., rectified input voltage, output voltage and input inductor current. Inductor current is sensed using current sensors, which are often expensive. Eliminating current sensors in PFC circuits is a subject of research interest. This paper gives a novel technique...
With the recent explosive growth of data in the real world, data mining techniques to obtain characteristics and knowledge from big data attract more attention. This paper focuses on a method to detect outliers in streaming data, and proposes a fast FPGA implementation of outlier detection based on the Mahalanobis distance. The proposed circuit is fully pipelined, and in every clock cycle, a given...
Due to recent technology scaling trends and increased circuit complexity, process and runtime variabilities are becoming major threats for correct circuit operation. Among these, transient voltage fluctuations appear to be the most critical issue, accounting for the biggest component of timing margin, at increased cost. As various design and workload parameters have an impact on voltage fluctuations,...
For a charging process of an electric vehicle it is important that the process runs safely from the view of the electric site. For this reason in this paper advanced electronic circuit breaker techniques are presented, optimised for the use in electric vehicle charging stations. In doing so the focus lies on the continuous monitoring of the charging process related to the temporal course of the voltage...
In this paper, we propose new receiver and transmitter architectures to use the Discrete Wavelet Packet Transform (DWPT) and its inverse transform (IDWPT) as a communication medium for wireless body sensor networks. The proposed original transmitter's and receiver's architectures are able to configure the number of sensors due to the considered regular and symmetric structures allowing to modify the...
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