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This paper describes a wideband dielectric resonator antenna with 30% fractional bandwidth, operating at 11GHz. The structure consists of a hollow cylindrical dielectric pellet fed by individually switched excitation probes. The switched excitation ...

In this work, applications involving a radiation reconfigurable antenna are presented and discussed. The antenna is capable of reconfiguring its radiation pattern from broadside to endfire over a common impedance bandwidth. After outlining the operation ...

The paper investigates the antenna design to be applied in the ESPACENET sensor node. The project involves a network of autonomous pico satellites working at a large number of communication standards and as passive radar sensors for earth observation. ...

This paper demonstrates the use of materials with variable conductivity in antenna design. These materials vary their conductivity in response to an electrical stimulus. Making part of an antenna from a variable conductive material provides some control ...

In this paper, the multiobjective optimal design of spacebased reconfigurable sensor networks with novel adaptive MEMS antennas is investigated by using multiobjective evolutionary algorithms. The non-dominated sorting genetic algorithm II (NSGA-II) is ...

This paper addresses the problem of optimised decision making in scheduling non deterministic events for WSN nodes. Scheduling events for highly constrained WSN nodes with finite resources can significantly increase the lifetime of the network. ...

This paper is concerned with application of standard wireless COTS protocols to space. Suitability of commercially available wireless sensor mote kits for communication inside and between satellites is investigated. Spacecraft applications of motes are ...

Recently, evolvable hardware has been developed with the objective to deal with sensor electronics problems such as static and dynamic deviations. However the industrial specifications and requirements are not considered in the hardware-learning loop ...

In the event of a release of toxic contaminant, either accidental or intentional, it would be useful to have an evolvable sensor network for tracking the toxic plume. In such an event, Homeland Security or DoD personnel are responsible for modeling the ...

Shoeprint evidence is often left at crime scenes, but is not always exploited. There is an increasing amount of research in developing systems to provide more rapid identification of footwear tread patterns. The main problem is that scene of crime ...

Society has grown to trust and depend on electronic systems. However, rising complexity, reduced time to market and increased commercial pressure contribute to eroding dependability. At the same time the value of data and high social dependence on the ...

Key management plays an essential role in achieving security in wireless sensor networks (WSNs). A range of new key distribution schemes have been suggested in an attempt to improve existing ones which are inappropriate for WSNs. However these schemes ...

This paper presents an evaluation of three classifiers using the discrete wavelet transform (DWT) as a feature extractor. The thrust is to investigate the impact of DWT with its various filter banks on the HMM, PCA and SHMM classifiers. In addition, we ...

Protecting hardware devices from unwanted software attacks is a current area of major security concern. Coupled with the need to secure and verify data sent to and from such devices, the need to supply systems capable of uniquely identifying and ...

The paper presents a parallel reconfigurable hardware implementation of the AES cryptographic algorithm developed for an embedded application. This new methodology directly maps a design described in a high level language, Handel-C, to FPGA platforms. ...

In this paper, we propose an FPGA implementation of a Hybrid Message-Embedding (HME) selfsynchronizing stream encryption based switched linear congruent pseudo-random generator. This encryption method is particularly attractive since it provides a low-...

This paper presents MORA, a new coarse-grain reconfigurable architecture optimized for multimedia processing. The system has been designed to provide a dense support for arithmetic operations, wide internal data bandwidth and efficiently distributed ...

In this paper, we present a low power implementation of H.264 adaptive deblocking filter (DBF) algorithm on ARM Versatile / PB926EJ-S Development Board. The DBF hardware is implemented using Verilog HDL. An AHB bus interface is designed and integrated ...

We present a new De-Blocking Filter module fully optimised for use on a recently introduced dynamically reconfigurable, instruction cell based architecture. The module consists of a novel combination of standard software transforms alongside ...

The paper presents a layered reconfigurable architecture based on partial and dynamical reconfigurable FPGA in order to meet the adaptivity and scalability needs in multimedia applications. An efficient adaptivity is enabled thanks to the introduction ...

In this paper, we present a configurable IP for the mode decision in intra predictor of H.264 system. The parallel architecture with three computational cores is proposed by using configurable structure to process YUV pixels, where the number of pixel ...

This paper presents a segmentation application based on change-detection techniques. The algorithm is able to deal with sequences having different amounts of motion by adjusting the number of frames to skip, to reduce the light drift by DC correction ...

A new Systolic Array based architecture is introduced for Variable block-size motion estimation (VBSME). This comprises a 2D array structure for SAD value computation combined with a parallel adder tree and a SAD comparator unit. Parallel raster scan is ...

In the system-on-chip (SoC) era, the growing number of functionalities included on a single chip requires the development of new design methodologies to keep the design complexity under control. Intellectual property reuse has been commonly employed as ...

In this paper, we present a design technique of configurable FIR filter architecture based on neural network like (multilayer network) structure. This architecture is a generalization of the configurable adaptive FIR filters and can be implemented on an ...

The next generation Wireless Personal Area Network and Wireless Sensor Network applications demand portability and ultra low power operation. Ultra Wideband communication has the potential to achieve these requirements due to possibility of digital ...