Browsing M Tech Dissertations by Title
Now showing items 508-527 of 820
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Multirate signal processing in digital communications
(Dhirubhai Ambani Institute of Information and Communication Technology, 2008)Fundamentals of multirate signal processing and perfect reconstruction filter banks are revisited. An attempt is made to develop a good understanding of concepts by connecting the filter bank design issues to the concepts ... -
Multiresolution fusion of satellite images and super-resolution of hyper-spectral images
(Dhirubhai Ambani Institute of Information and Communication Technology, 2010)This thesis presents a model based approach for multi-resolution fusion of the satellite images. Given a high resolution panchromatic (Pan) image and a low spatial but high spectral resolution multi spectral (MS) image ... -
Multiresolution fusion using compressive sensing and graph cuts
(Dhirubhai Ambani Institute of Information and Communication Technology, 2012)Multiresolution fusion refers to the enhancement of low spatial resolution (LR) of Multispectral (MS) images to that of Panchromatic (Pan ) image without compro- mising on the spectral details. Many of the present day ... -
Music genre classification using principal component analysis and auto associative neural network
(Dhirubhai Ambani Institute of Information and Communication Technology, 2006)The aim of music genre classification is to classify music pieces according to their style. Principal Component Analysis (PCA) is applied on raw music signals to capture the major components for each genre. As a large ... -
Negotiation for resource allocation on infrastructure as a service cloud
(Dhirubhai Ambani Institute of Information and Communication Technology, 2010)The Cloud is a computing platform that provides dynamic resource pools, virtualization, and high availability. Cloud computing infrastructures can allow enterprises to achieve more efficient use of their IT hardware and ... -
Network coding based multicast in delay tolerant networks
(Dhirubhai Ambani Institute of Information and Communication Technology, 2008)Delay Tolerant Networks (DTN) are sparse ad hoc networks in which no contemporaneous path exists between source and destination most of the time. In DTN, connectivity graph of the network changes over time either due to ... -
Network security using machine learning
(Dhirubhai Ambani Institute of Information and Communication Technology, 2019)Network Security is one of the major challenges for any organization. With the increase in cyber attacks, Network Security is also a point of concern for home users. Network Intrusion Detection Systems (NIDS) are widely ... -
New learning based super resolution using contourlet transform
(Dhirubhai Ambani Institute of Information and Communication Technology, 2009)new learning based super-resolution reconstruction using contourlet transforms is proposed. contourlet transform provides high degree of directionality. It captures geometrical smoothness along multiple directions and ... -
NL2DL: a platform for formal ontology learning and evaluation.
(Dhirubhai Ambani Institute of Information and Communication Technology, 2013)Availability to reason for extraction of knowledge makes Ontology Learning subject of intensive study for past couple of years. With the scaling of the domain, time taken to manually conceptualize the domain knowledge ... -
Non-Orthogonal Multiple Access
(2021)At present, the spectrum available in wireless communication systems is limited. To meet the high demands in fifth-generation (5G) wireless communication systems, Non-orthogonal multiple access (NOMA) has been introduced. ... -
Non-uniform information dissemination for performance discovery in computational grids
(Dhirubhai Ambani Institute of Information and Communication Technology, 2005)The required service in any resource-sharing environments like Grid, Peer-to-Peer etc., is discovery of resources. A resource discovery mechanism returns locations of resources that match the description, given a description ... -
Nonuniform sampling and its reconstruction methodologies
(Dhirubhai Ambani Institute of Information and Communication Technology, 2008)Alias-free DSP (DASP) is a methodology of processing signals digitally inside bandwidth that are wider than the famous nyquist limit of half of the sampling frequency. This topic has benefited from a strong research revival ... -
Novel 7T SRAM cell design for low power cache applications
(Dhirubhai Ambani Institute of Information and Communication Technology, 2012)Scaling in integrated circuit technology directly paves way to increased package density, thereby increasing onchip power. With continuous scaling, low power design techniques results in efficient use of silicon die. ... -
Novel approach for localization in Ad-Hoc sensor networks
(Dhirubhai Ambani Institute of Information and Communication Technology, 2004)The ability of a sensor node to move itself or to otherwise influence its location will be critical in sensor networks. Today, the wireless community is putting great effort on the possibility of deploying thousands of ... -
Novel architecture for a CMOS low noise amplifier at 2.4 GHz
(Dhirubhai Ambani Institute of Information and Communication Technology, 2005)Radio frequency design has been one of the major research areas in the recent past. Emergence of several Wireless Communication standards has demanded availability of different analog blocks for use in transceivers with ... -
Novel circular fractal antenna array
(Dhirubhai Ambani Institute of Information and Communication Technology, 2018)Traditional antennas work well only for one resonant frequency and using multiple antennas for different frequencies is a complex task, therefore multiband circular fractal antenna was designed which have a small size and ... -
Novel filtering based approach for epoch extraction
(Dhirubhai Ambani Institute of Information and Communication Technology, 2015)Accurate estimation of source excitation features is important in many speech analysis-synthesis applications. According to source-filter theory, separating source features from speech signal is basically a deconvolution ... -
Novel local oscillator circuit for sub-harmonic mixer
(Dhirubhai Ambani Institute of Information and Communication Technology, 2005)Direct Conversion RF transceiver is the enabling technique for the next generation cellular and personal communication devices striving for miniaturization, long life of battery and cost effectiveness. Existing techniques ... -
Novel nonlinear prediction-based features for spoofed speech detection
(Dhirubhai Ambani Institute of Information and Communication Technology, 2016)Automatic Speaker Verification (ASV) systems are prone to various spoofing attacks.<p/>Spoofing is one type of technique in which fake speech signal is given to<p/>the ASV system to get the access of that system without ... -
Numeral identification of handwritten indian languages
(Dhirubhai Ambani Institute of Information and Communication Technology, 2014)Automatic Speaker Verification (ASV) systems are prone to various spoofing attacks.Spoofing is one type of technique in which fake speech signal is given tothe ASV system to get the access of that system without the ...