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Electronics and Telecommunications (ISETC), 2010 9th International Symposium on

Date 11-12 Nov. 2010

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Displaying Results 1 - 25 of 113
  • [Front cover]

    Page(s): c1
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  • [Title page]

    Page(s): 1 - 4
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  • List staff

    Page(s): 1 - 2
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  • list-reviewer

    Page(s): 1
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  • [Blank page]

    Page(s): 1
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  • Table of contents

    Page(s): 1 - 6
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  • Invited papers

    Page(s): 1 - 2
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (20 KB)  

    Provides an abstract for each of the invited presentations and a brief professional biography of each presenter. The complete presentations were not made available for publication as part of the conference proceedings. View full abstract»

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  • Human-centered video analysis for multimedia postproduction

    Page(s): 3 - 8
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2421 KB) |  | HTML iconHTML  

    Semantic analysis of video has witnessed a significant increase of research activities during the last years. Human-centered video analysis plays a central role in this research since humans are the most frequently encountered entities in a video. Results of human-centered video analysis can be of use in numerous applications, one of them being multimedia postproduction. Three recently devised semantic analysis algorithms are reviewed in this paper. View full abstract»

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  • Ambient intelligence and rehabilitation robots — A necessary symbiosis for robust operation in unstructured environments

    Page(s): 9 - 16
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2677 KB) |  | HTML iconHTML  

    In this paper we will consider robots that are designed to support disabled people with quadriplegia. The patients are paralysed e.g. due to a spinal cord injury (SCI) at vertebrae c4 or above and depend all day from care persons. Robots like the care giving robot FRIEND will only be accepted by users if they provide them with independence from personal care persons for considerable time periods over the day in as many situations as possible and if the user can rely on the robot. Robot control must be very reliable and robust against many variations in environment. For robust behaviour, it is necessary to provide the robot control system with additional information from the environment. This information can be generated by a sensor at the robot or by smart environmental systems, which are equipped with additional sensors and actor elements that are used to support the robot system in difficult tasks. In this paper, ambient intelligence is especially considered to support action sequences of the robot and provide redundancy to the robot control system. View full abstract»

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  • Electronic circuits

    Page(s): 1 - 2
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  • Variable gain amplifier building blocks based on MOSFET current dependence on the drain to source voltage

    Page(s): 19 - 24
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1172 KB) |  | HTML iconHTML  

    This paper describes two variable gain amplifier building blocks which use MOSFETs operating in triode or saturation regions as basic transconductances. Employing two matched transistors that have all the terminals, except for the drain, connected together, one has the possibility of controlling the drain current using the drain voltage as a control. All the circuits were simulated using the austriamicrosystems 0.35um TDK made available within the Europractice project. View full abstract»

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  • A time multiplexed programmable array for structured ASIC technology

    Page(s): 25 - 28
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1284 KB) |  | HTML iconHTML  

    This paper describes the architecture of a time-multiplexed Programmable Array Logic (PLA) designed for structured ASIC technology. Time multiplexing is realized by storing sixteen PLA configurations in on-chip memory. This inactive an-chip memory is distributed around the chip allowing single cycle configuration change and it can be accessed either from off-chip or from internal logic. Functional testing proves that the structure can be used to emulate multiple independent, communicating designs in virtual hardware environment. Implementation results on structured ASIC validated the solution from both area and timing perspective. View full abstract»

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  • Improved linearity CMOS differential amplifiers with applications in VLSI designs

    Page(s): 29 - 32
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1061 KB) |  | HTML iconHTML  

    Original differential structures using exclusively MOS devices working in the saturation region will be presented. Performing the great advantage of an excellent linearity, obtained by using original linearization techniques, the proposed circuits will be developed and designed for low-voltage low-power operation. The estimated linearity is obtained for an extended range of the differential input voltage. As an extension of the linearized differential structure, active resistor circuits having both positive and negative equivalent resistances will be designed, presenting the same linearity and extended input voltage range. The frequency response of the proposed structures is strongly increased by operating all MOS devices in the saturation region, while the complexity and design costs are strongly reduced as a consequence of the circuit multifunctionality. View full abstract»

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  • An improved precision full-wave rectifier for low-level signal

    Page(s): 33 - 38
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1466 KB) |  | HTML iconHTML  

    This paper presents precision full-wave rectifier for low-level signal with operational conveyor and current mirrors. Operational conveyor circuit topology, based on current-steering output stage, is also described and analyzed. The current-mode full-wave rectifier is realized with four unity-gain current mirrors and three DC current sources. PSPICE program was used to verify the proposed design of the operational conveyor and precision full-wave rectifier. The results of the simulation are presented and compared with simulation results of the realization that was published. View full abstract»

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  • Enhanced dual-path compensated amplifier for driving large capacitive load

    Page(s): 39 - 42
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1146 KB) |  | HTML iconHTML  

    This paper presents an improved amplifier compensation scheme for driving large capacitive loads. The dual-path compensated amplifier topology requires two parallel high speed paths for signal propagation and offers better performances than previously reported compensation schemes. The goal of this work was to improve this type of architecture in order to achieve lower power consumption, bandwidth extension and slew rate improvement, while reducing the compensation capacitors size and, therefore, the overall chip area. View full abstract»

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  • Optimization of the channel filter in OFDM radio receivers by using genetic algorithms

    Page(s): 43 - 46
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1170 KB) |  | HTML iconHTML  

    This paper proposes a novel method for deriving optimized transfer functions for channel filters in OFDM receivers with Zero Intermediate Frequency architectures. A genetic algorithm is employed, based on only three selection criteria that independently control the pass band and the stop band of the filter. Another special feature of this method is that the disruptive effect of the signals from the adjacent bands is analyzed in detail by using a purpose-built OFDM signal generator. This way the mean attenuation in the adjacent band can be maximized effectively. A Matlab implementation of the proposed method is presented, along with a design example. View full abstract»

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  • Performance gain from data and control dependency elimination in embedded processors

    Page(s): 47 - 50
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1377 KB)  

    This paper presents a way of increasing overall performance in embedded processors by introducing a multithreading interleaved execution model that can be applied to any Instruction Set Architecture. Usual acceleration techniques as superpipeline or branch prediction are not suited for embedded machines due to their inherent inefficiency. We will show that by removing dependencies within a processor and thus eliminating the need for extra hardware required for keeping the overall coherence, there will be a noticeable increase in performance (up to 450%) and also a decrease in size and power consumption. Also, this approach will maintain the backwards compatibility with the software legacy in order to keep the software changes to a minimum. View full abstract»

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  • First generation current conveyor macromodel

    Page(s): 51 - 54
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1288 KB) |  | HTML iconHTML  

    This paper presents a macromodel of first generation current conveyor (CCI). This macromodel is suitable for fast simulations of integrated circuits containing current conveyors. The accuracy of the proposed macromodel has been verified by Spice simulations. The results show a close approximation with simulation on the transistor level but with reduced computer simulation time. View full abstract»

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  • Instrumentation and measurement microwaves

    Page(s): 55 - 56
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    Freely Available from IEEE
  • Metamaterial leaky-wave and resonant type antennas

    Page(s): 57 - 60
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    This paper presents novel CRLH (Composite Right/Left Handed) metamaterial structures that are used as leaky-wave and resonant type antennas. As it will be shown, the designed radiating CRLH structures exhibit rich and unusual properties, not found at conventional antennas: the ability to scan the main radiation lobe from negative to positive elevation angles and the existence of positive, negative and zero-order resonances. View full abstract»

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  • Highway road traffic information and monitoring system

    Page(s): 61 - 64
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1282 KB) |  | HTML iconHTML  

    Road traffic, by dimensions, weights and speeds of vehicles which is moving is a danger that requires precise deployment rules, advanced technical systems for safe movement, an appropriate infrastructure etc. Road safety is an issue of interest to all citizens, each of which can contribute to improving safety on public roads. Although the measures taken in this area have proven, road accidents remain unacceptably high. One of the main causes of serious accidents is the failure of its speed and road weather conditions. For this reason in this paper we present an electronic road traffic information and monitoring system. The system consists of a traffic information system and detection equipment and weather monitoring, video imaging to speeding vehicles and the weight permitted for movement on public roads. View full abstract»

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  • Numerical exploration of filtering properties of some switched high impedance surfaces

    Page(s): 73 - 76
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    A parametric study of a high impedance surface built in microstrip technology is reported and the feasibility of an electronically switched parallel-plate waveguide is demonstrated. Full wave electromagnetic simulation is used for obtaining relevant parameters and for operation demonstration. View full abstract»

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  • Electrical power network disturbance detection and monitoring system

    Page(s): 77 - 80
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1326 KB) |  | HTML iconHTML  

    In our days, almost all of the electrical equipment has been equipped with switching supplies which can cause disturbances in the electrical power network. In order to reduce or even eliminate this disturbances, an electrical power network monitoring is required. The disturbances presents in the system must be recorded and analyzed in order to take the right decision to eliminate them. View full abstract»

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  • A study of the external factors that affect the measurement data of a MEMS gyroscope sensor — Towards an inertial navigation system

    Page(s): 81 - 84
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1178 KB) |  | HTML iconHTML  

    This paper identifies the basic errors that influence the output data of a Micro-Electro-Mechanical System (MEMS) gyroscope, and determines their effect over the measurements. At the end of the paper a basic pedestrian dead reckoning (PDR) system was implemented based on MEMS technology. This was done in order to highlight the importance of a proper compensation for error sources that affect the measurement data of these sensors. View full abstract»

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  • On Oscillation Based filter testing

    Page(s): 85 - 88
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1113 KB) |  | HTML iconHTML  

    An analytical method to determine the response of a class of Oscillation Based Test circuits built around second-order filters is presented. It is showed that in the case of a system with real poles the traditional setup for the Oscillation Based Test fails to oscillate. A novel circuit structure with a trigger-Schmidt comparator is proposed that circumvents this limitation. View full abstract»

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