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It is my great pleasure to welcome you all to the First 2014 International Conference on Electronics, Communication and Computational Engineering (ICECCE) on 17th & 18th of November 2014. It has been a real honor and privilege to serve as the Conference Chair. The Conference is organized by the department in association with IEEE Madras Section. ICECCE has provided a cross-disciplinary venue for...
In this paper, a technique to design the 8 bit continuous-time band-pass Sigma-Delta converters for 70 MHz is presented. The conversion from discrete-time (z-domain) loop-filter transfer function into continuous-time (s-domain) is done by using Impulse-invariant-transformation. The transconductor-capacitor filter is used to implement continuous-time loop-filter. A latched-type comparator and a TSPC...
Fault tolerance has an important role in modern digital systems were immediate human intervention is not possible and system failure can have disastrous consequences. Parallel Prefix Adder has been established as the most efficient circuits for binary addition. The binary adder is the critical element in most digital circuit designs. As Kogge-Stone has inherent redundancy in the carry tree, a fault...
High Power Amplifier in wireless communication systems exhibit nonlinear behavior which causes signal degradation. This is detrimental to the signals that pass through it. It appears in the form of Harmonic distortion, Gain compression, Inter-modulation distortion, Phase distortion, adjacent channel interference, etc. Orthogonal frequency-division multiplexing (OFDM) is considered to be better techniques...
Aircraft applications demand high reliability and high power density while aiming to achieve simplicity in operation, increased fuel efficiency and reduced costs of operation and environmental impact. Fighter aircraft especially, must have high manoeuvrability and must be able to handle huge thrust as compared to passenger aircrafts. This paper deals with the development of an all electric actuator...
Central Manufacturing Technology Institute, Bangalore, India was using Raytheon precision laser driller/welder which was manufactured around twenty years back. The laser system was manufactured using analog controllers. The company is finding difficulty in procuring analog components which was used twenty years back, during maintenance and feature up gradation. Analog controllers are non-expansible...
Direct Torque controlled (DTC) induction motor drive gives direct control of stator flux and electromagnetic torque. Conventional speed sensors are replaced in sensor less DTC to improve the reliability, noise immunity and to reduce the complexity of the system. In sensor less DTC the rotor speed estimation at low speeds is degraded by the stator resistance parameter variations due to temperature,...
BIST is one of the DFT techniques in which the test circuitry will be present along with the CUT. Different BIST architectures are proposed in order to reduce the area overhead, power overhead, test time and test costs. The STUMPS architecture is best suited for BIST environment in terms of area and power, but it requires external TPG and Compactor. This paper presents the modified low power STUMPS...
Design for Testability (DFT) based on scan and ATPG has been adopted as a reliable and broadly acceptable methodology that provides very high test coverage, but for large circuits, the growing test data volume causes a significant increase in test cost because of much longer test time and elevated tester memory requirements. Test compression or scan compression provides great reduction in test data...
Structural test is the most efficient test to detect manufacturing defects. With ever increasing complexity of digital designs, structural test vectors alone are not sufficient to achieve the desired fault coverage. Functional test vectors are programs written with the design specifications in mind rather than manufacturing defects and this can help in testing some of the critical portions of design...
Information jamming in electronic warfare is a form of electronic attack where jammers radiate interfering signals toward an enemy's system, blocking the receiver with highly concentrated energy signals. The purpose of information jamming is to interfere with the enemy's effective use of the electromagnetic spectrum. This information can take the form of voice or non-voice (e.g., video or digital...
Non conventional sources of energy are those which are depleting day by day. Solar energy which is abundant in India has gained more importance hence. The energy produced by the sun, is harnessed with the help of PV panels and injected to converters and rectifiers. It is subsequently fed to an inverter that produces an AC power. In this paper, a PV panel fed modified dual output SEPIC converter is...
A photovoltaic system is an arrangement of components designed to supply usable electric power using the sun as the power source. PV systems have many advantages like it provide clean energy, it can be made available almost anywhere there is sunlight, the operating and maintenance costs for PV panels are considered to be low. The conventionally used converters in solar systems have many disadvantages...
The classification and identification of cotton leaf diseases is important as it can prove detrimental to the yield. The classifier needs most discriminating features to improve the effectiveness and efficiency of analysis and classification for that reason feature extraction and representation is a decisive step for pattern recognition system. In the proposed work we present a graph cut based approach...
Evolution of very low-cost hardware, viz. low-resolution CMOS cameras and microphones, facilitating the retrieval of multimedia content from the environment, has prompted the conception of wireless multimedia sensor networks (WMSNs). Sensor nodes' energy consumption is still one of the main concerns while improving the network lifetime of the network and clustering has been proved an important tool...
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