Browsing PhD Theses by Title
Now showing items 10-29 of 73
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CLAPDAWN: cross layer architecture for protocol design in a wireless network
(Dhirubhai Ambani Institute of Information and Communication Technology, 2011)Architecture plays a key role in overall success of the network protocol stack. It is essential to have robust architecture for the complex system having multiple cross protocol interactions. In the literature more emphasis ... -
Classification Techniques of PolSAR Images
(Dhirubhai Ambani Institute of Information and Communication Technology, 2021)Over the years, optical remote sensing technology has restricted the ability to capture images during harsh weather settings and at night time. However, Synthetic Aperture Radar (SAR) is independent of solar illumination ... -
Compact Circularly Polarized Tri-, Dual- and Single-Band Dielectric Resonator Antennas
(Dhirubhai Ambani Institute of Information and Communication Technology, 2021)The Dielectric Resonator Antennas (DRAs) have received wide attention due to low loss, high radiation efficiency, small size, wider bandwidth and simple feed network as compared to the microstrip antennas. Microstrip ... -
Compressive sampling architecture for wideband communication
(Dhirubhai Ambani Institute of Information and Communication Technology, 2020)This dissertation proposes a novel Compressive Sampling (CS) scheme for Sub-Nyquist Spectrum Sensing (SNSS) of spectrally sparse wideband signals. A novelty of our proposed SNSS scheme resides in the analog front-end. We ... -
Coordinated adaptive power management (CAPM) technique for sensor network nodes
(Dhirubhai Ambani Institute of Information and Communication Technology, 2013)Small size of wireless sensor nodes limit the size of the battery supported on it which directly limits the capacity of the battery and lifetime of the sensor nodes. Though energy scavenging is one of the solutions, it is ... -
Copy-Move Tampering: Some New Approaches of the Detection and Localization in a Digital Image
(Dhirubhai Ambani Institute of Information and Communication Technology, 2022)Images speak. They tell us stories. Digital images carry plethora of information. The availability of cost-effective digital camera-enabled devices has made capturing images a child’s play. Statistics witnesses that the ... -
Crying for a reason : a signal processing based approach for infant cry analysis and classification
(Dhirubhai Ambani Institute of Information and Communication Technology, 2016)The present work in this thesis is directed towards understanding the reason of crying of an infant using signal processing approaches. Infant cry analysis and classification is a non-invasive method of analyzing the infant ... -
Dense disparity estimation using stereo images
(Dhirubhai Ambani Institute of Information and Communication Technology, 2017)"“Stereo vision” refers to the ability to infer information on the three-dimensional (3D) structure and distance/depth of a scene using two images captured from different view-points. It imitates one of the tasks performed ... -
Design and analysis of distortion reduction techniques in direct conversion receiver
(Dhirubhai Ambani Institute of Information and Communication Technology, 2017)Direct-conversion is alternative wireless receiver architecture to the well-established super heterodyne architecture. Direct-conversion receiver (DCR) can offer highly integrated, low-power and low-cost hardware Solutions ... -
Design and analysis of multiband fractal antenna
(Dhirubhai Ambani Institute of Information and Communication Technology, 2015)Miniaturized Multiband antenna design is an important and challenging task for communication industry. Several constraints like size, position of the antenna, feasibility, reflection coefficient, Specific absorption Rate ... -
Design and analysis of novel receiver front-end sub-systems in Ku-band for satellite applications
(Dhirubhai Ambani Institute of Information and Communication Technology, 2014)A novel receiver front-end; Low Noise Amplifier (LNA), mixer and Local Oscillator (LO); is designed and analyzed in Ku-band. Different design aspects of the subsystems along with the trade-offs and improvements are presented. ... -
Design and Analysis of Privacy Models against Background Knowledge in Privacy - Preserving Data Publishing
(Dhirubhai Ambani Institute of Information and Communication Technology, 2021)"Humongous amount of data gets collected by various online applications like social networks, cellular technologies, the healthcare sector, location - based services, and many more. The collected data can be accessed by ... -
Design and analysis of schemes for privacy preserving cloud storage services
(Dhirubhai Ambani Institute of Information and Communication Technology, 2018)Public cloud storage services have become the leading choice for individuals and organizations to store their data, as the service provides the benefits of availability and reliability together at a reduced cost. While ... -
Design and Performance Comparison of Novel High Q Coaxial Resonator Filter for Ka-band High Throughput Satellite
(Dhirubhai Ambani Institute of Information and Communication Technology, 2021)The filters deployed in the satellite are high-performance filters that have very stringent in-band and out of band performance. They require high Q resonators with spurious free-range for their realization. But, the Q ... -
Design and Simulation of Single Electron Transistor Based High-Performance Computing System at Room Temperature
(Dhirubhai Ambani Institute of Information and Communication Technology, 2021)"The VLSI technology has seamlessly grown over the years, that yields high-performance, low-power and high-density devices. Over the several decades, the performance of existing complementary metal-oxide semiconductor ... -
Design automation of analog to digital converters based on geometric programming
(Dhirubhai Ambani Institute of Information and Communication Technology, 2012)The trend towards digital processing of analog signals in an increasing number of application fields has stimulated significant research efforts in the area of data converters implemented in CMOS technologies. Designing ... -
Design of Broadband Microwave Absorbers using Carbonyl Iron Filled Silicon Rubber Sheets in the Frequency Range of 1 to 8.2 GHz
(Dhirubhai Ambani Institute of Information and Communication Technology, 2022)For microwave absorber applications, carbonyl iron (CI) powder is a commonly used filler material in silicon rubber because of the high value of attenuation coefficients (50.56 dB/cm), high curie temperature, good temperature ... -
Design of countermeasures for spoofed speech detection system
(Dhirubhai Ambani Institute of Information and Communication Technology, 2017)Automatic Speaker Verification (ASV) systems are vulnerable to speech synthesisand voice conversion techniques due to spoofing attacks.Recently, to encourage thedevelopment of anti-spoofing measures or countermeasures for ... -
Design of QbE-STD System: audio representation and matching perspective
(Dhirubhai Ambani Institute of Information and Communication Technology, 2017)The retrieval of the spoken document and detecting the query (keyword) within the audio document have attained huge research interest. The problem of retrieving audio documents and detecting the query (keyword) using a ... -
Design of spoof speech detection system : teager energy-based approach
(Dhirubhai Ambani Institute of Information and Communication Technology, 2021)Automatic Speaker Verification (ASV) systems are vulnerable to various spoofing attacks, namely, Speech Synthesis (SS), Voice Conversion (VC), Replay, and Impersonation. The study of spoofing countermeasures has become ...