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March 2017

Imaginary Future Seminar

March 27, 2017 @ 9:48 pm - 5:00 pm
ESB 244

Speaker :- Great Person Abstract :- To see the list of all events, click the Menu Item named “Events” on the top. This will redirect you to a page that shows some upcoming events and all Previous Events can be found here. If you needed to see only one kind of event, Hover to the Top Menu Item “Events”, then Hover to any sub-menu item and click on it

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Statistical timing yield optimization using discrete gate sizing

March 27, 2017 @ 9:48 pm - 4:00 pm
ESB 244

Speaker: S. Ramprasath (EE10D046) Abstract:      The entry into the nanometer regime of the process technologies has lead to an increase in the process parameter variations. Traditionally deterministic delays obtained by performing static timing analysis(STA) on the worst case corner was used to optimize circuits to meet the timing specification. This leads to pessimistic estimates of circuit delays and hence creates a power/area overhead. With the constraints on power/area becoming tighter especially for portable devices, it is vital that…

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March 3600

Design and Performance Analysis of Cognitive WLAN MAC protocol

March 27, 3600 @ 4:18 pm - 11:00 am
ESB 244

Speaker:  Bhasker Dappuri (EE10D015) ABSTRACT: Cognitive Radio Networks (CRN) are introduced to solve the spectrum scarcity problem and to improve the utilization of licensed channel. In this talk we propose a mechanism by which IEEE 802.11 DCF can be adapted by unlicensed secondary user (SU) in a Cognitive WLAN to opportunistically access and transmit data on the licensed channel owned by the primary user (PU). We modify the Markov chain model proposed by Bianchi for the cognitive WLAN. Our model…

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March 2017

Automatic detection of splicing in images

March 27, 2017 @ 9:48 pm - 4:00 pm
ESB 246C

Speaker: Purnachandra Rao (EE10D017) Abstract With accessibility to advanced image editing tools becoming commonplace, creating fake images is turning out to be an effortless task. Image splicing is one form of tampering in which an original image is altered by copying a portion from another source. There are several practical situations in which it is critical to determine whether an image is spliced or not. Among the many cues that can possibly be used to detect the presence of splicing,…

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Design of High Speed Continuous Time Delta Sigma Modulators using a Time Interleaved Quantizer “

March 27, 2017 @ 9:48 pm - 4:00 pm
ESB 244

Speaker :   Ankesh Jain (EE09D011 ) Abstract : Continuous-time Delta Sigma Modulators based on 1-bit quantizers with FIR feedback combine the advantages of single-bit and multibit operation. At GHz clock rates, even the FIR-DAC approach begins to run into difficulties due to the limited time available for regeneration. This work uses a time-interleaved 1-bit ADC and 8-tap FIR-DACs to address this problem. Digital calibration (implemented off-chip) addresses mismatch in the interleaved sections, and rise-fall asymmetry in the feedback DAC…

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Characterization of High Speed Continuous time Delta Sigma modulators using Duobinary coding

March 27, 2017 @ 9:48 pm - 4:30 pm
ESB 244

Speaker :   Ankesh Jain (EE09D011) Abstract: Bench characterization of wide band oversampled converters is a challenge due to the high data rate at the output of the modulator. We propose the use of a duobinary test interface to extend the frequency range over which reliable laboratory measurements become possible. We show that using such an interface effectively randomizes the modulator output data and  reduces high frequency content, thereby reducing the bandwidth demands made on the test equipment. It also…

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An Improved Capacitance-to-Digital Converter for Leaky Capacitive Sensors

March 27, 2017 @ 9:48 pm - 3:00 pm
ESB 244

Speaker:  Prashanth Vooka (EE 11D020) ABSTRACT :   In this talk, a capacitance-to-digital converter (CDC) that employs a novel approach to perform an accurate measurement of the capacitance of a leaky capacitive sensor will be presented. The CDC employs a sinusoidal source as its excitation, which is advantageous for various sensing applications including ice detection, liquid level measurement, humidity measurement, proximity sensing, etc. Recently, an Impedance-to-digital converter (IDC) based on the dual-slope conversion technique has been reported. It can measure…

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Rate Prediction using Higher Order Markov Models

March 27, 2017 @ 8:44 pm - 12:30 pm
CSD 308

Speaker:             Saishankar K.P ee09D025 Guide:                 Dr. Giridhar / Dr. sheetal Kalyani Abstract: In cellular broadband access systems such as 3GPP LTE, the User Equipment (UE) feeds back a quantized rate metric to the Base-station (eNodeB), in order to perform rate adaptation. The periodicity of this rate feedback is fixed so as to minimize the overhead without eroding its benefits. However, between two feedback instants n and n + δ, the actual rate that the UE can correctly decode might change…

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Colorimetric sensors using hybrid mode plasmon imaging for refractive index and thickness sensing

March 27, 2017 @ 9:48 pm - 4:00 pm
ESB 244

Speaker – Pankaj Arora (EE11D036) Abstract: Surface Plasmon (SP) based label-free sensing may be used to estimate the refractive index and thickness of sub-wavelength thick dielectric analytes, due to the strong confinement of fields resulting in enhanced interaction with analytes. In this talk, colorimetric sensing using real and Fourier Plane microscopic images of hybrid mode SPs, excited on engineered 1D and 2D low aspect ratio (~0.1) periodic plasmonic nanostructures will be presented. The key ideas that will be presented are…

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Identification of Inter-Area Oscillations Using Zolotarev Polynomial Based Filter Bank With Eigen Realization Algorithm.

March 27, 2017 @ 8:49 pm - 12:30 pm

Speaker:   Kalyani Mandadi  (EE11D007) Guide:        Dr. B. Kalyan Kumar ABSTRACT : Inter-area oscillations in power systems needs to be monitored and preventive measure should be taken which otherwise could lead to grid instability. Inter-area oscillations can be identified by analyzing the signals that are obtained from phasor measurement units (PMUs) placed at different locations in a system. Digital filter banks can be used for decomposing PMU signals into monocomponent signals for identification of inter-area oscillation frequencies. In the present work,…

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