Daniela Dragomirescu

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The first aim of this work is to propose the design of a system-on-chip (SoC) platform dedicated to digital image and signal processing, which is tuned to implement efficiently multiply-and-accumulate (MAC) vector/matrix operations. The second aim of this work is to implement a recent promising neural network method, namely, the support vector machine (SVM)(More)
This paper gives an overview of development and prototyping of a radio interface designed for high data rate Wireless Sensor Networks (WSN) using a top down approach. An aerospace application of this work is presented to underline the importance of rapid and flexible prototyping. Single Carrier Frequency division multiple Access (SC-FDMA), with a very low(More)
Impulse Radio Ultra Wide Band (IR-UWB) is a promising technology to address Wireless Sensor Network (WSN) constraints. However, existing network simulation tools do not provide a complete WSN simulation architecture, with the IR-UWB specificities at the PHYsical (PHY) and the Medium Access Control(MAC) layers. In this paper, we propose a WSN simulation(More)
We introduce the radio reconfigurability thanks to IRUWB mostly digital architecture for MANET context. This particular context implies some constraints on the radio interface such as low cost, low power, small dimensions and simplicity. Here, we propose an implementation of dynamic reconfigurable receiver on ASIC, and FPGA, after having explained the(More)
This paper addresses the radio interface problematic for MANET (Mobile Ad-hoc NETwork) applications. Here we propose to study the radio reconfigurability in order to provide a unique physical layer which is able to deal with all MANET applications. For implementing this reconfigurable physical layer, we propose to use Impulse Radio Ultra WideBand (IRUWB).(More)
Traditional aerospace testing and monitoring systems are based on point-to-point analog wiring, which results in bulky and heavy cables, difficult installation and maintenance and a limited number of sensors. Switching to wireless would alleviate these constraints but creates new challenges due to the high data rates, transfer reliability requirements and(More)
One essential building block for integrated 60GHz CMOS radio transceivers is the low noise amplifier (LNA). This paper presents a two-stage cascode LNA fabricated in the 65 nm bulk CMOS technology of ST Microelectronics. It occupies 0.4mm x 0.4mm die area (pad-limited). For the matching networks, lumped elements are employed exclusively. It can be biased(More)
In radio frequency integrated circuits (RFICs) that use a low resistivity silicon substrate, spiral inductors show advantages in performance and size with respect to transmission lines, even at millimeter-waves (mm-waves). Design guidelines to create mm-wave inductors and equivalent circuit models describing them exist in literature. However, these models(More)
In radio frequency integrated circuits using a low resistivity silicon substrate, spiral inductors show advantages in performance and size with respect to transmission lines, even at frequencies as high as 60GHz. In order to verify simulation results and build accurate models, test inductors need to be fabricated and characterized very accurately. This(More)