S. Radhika ¹, Sivabalan Arumugam ²

Affiliations
1 Faculty of Electrical and Electronics Engineering, Sathyabama University, Chennai, Tamil Nadu, IN
2 NEC Mobile networks Excellence Centre, Chennai, Tamil Nadu, IN

Abstract

Estimation of time delay associated with a given signal is always an interesting and useful problem in many applications like radar, sonar, tele-conferencing, wireless networks. It is important because the results obtained from the time delay estimators are used for further processing. Finding the time delay especially in noisy environment is always complicated and challenging and an accurate delay estimator is inevitable. Most of the time delay estimation techniques use second order statistics. In this paper, an improved new delay estimator based on information theory criteria to work in noisy environment is proposed. Simulation results validate the improvement in the time delay estimation even in very low signal to noise ratio conditions.

Keywords

Correlation, Joint Entropy, Mutual Information, Non Mutual Information, Time Delay Estimation

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Tharakan Alex ¹, S. Radhika ²

Affiliations
1 Power Electronics and Industrial Drives, Sathyabama University, Rajiv Gandhi Salai, Jeppiaar Nagar, Chennai - 600 119, Tamil Nadu, IN
2 Department of EEE, Sathyabama University, Rajiv Gandhi Salai, Jeppiaar Nagar, Chennai - 600 119, Tamil Nadu, IN

Abstract

Objectives: This paper deals with the effect of dynamic resistance due to small capacitor in a high step up converter and its compensation technique. Methods: Initially the required resistance for the system is calculated and stored. Then the dynamic resistance (DR) of PV system is calculated using input voltage and input current of PV system and compared with the required resistance with the help of a switch type compensator. If DR of PV is greater than the required, then the compensator helps to reduce it to required resistance and if DR of PV is less than the required, the compensator adjust accordingly to get a steady output voltage. Findings: Findings proved that the effect of dynamic resistance due to small capacitors cause variation in output voltage and the DR compensation helps to get steady output voltage. Applications: This system is designed for high voltage applications.

Keywords

Adaptive Voltage Control, Dynamic Resistance.

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D. Dhayalan ¹, K. Divya Bharathi ¹, S. Radhika ¹, V. Rajalakshmi ¹

Affiliations
1 Department of MCA, Vel Tech High Tech Dr. Rangarajan Dr. Sakunthala Engineering College, Avadi, Chennai - 600 062, Tamil Nadu, IN

Abstract

Objectives: This paper discusses about the importance of the effective intelligence among human and artificial devices. Nowadays more and more human activities will be carried by artificial agents and devices, which overcome our Imagination. Methods: This paper gives a theoretical application to develop the personality of mentally challenged person by feeding Artificial Instructions into their brain by using the fMRI (functional Magnetic Resonance Imaging) concept in the reverse manner which is used in the mind reading system. Findings: The instructions will get fed into the brain by means of computer system and then it passes to the Temporal lobes of the human brain.Temporal lobes were used to speak, make decision, think and analyse. The instructions will get decoded into brain instruction by the different signals of the fMRI. Applications/Improvements: This work may bring changes in the life of mentally challenged ones and accidental victims.

Keywords

Artificial Instructions, fMRI Technology, Functional Imaging, Human Brain

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