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Now showing items 181-190 of 212
Enhancing data efficiency in OFDM (IEEE 802.11a) using equalization (11A)
(Dhirubhai Ambani Institute of Information and Communication Technology, 2005)
IEEE 802.11a OFDM signal passed through a dispersive channel introduces ISI & ICI. To avoid ISI & ICI, cyclic prefix (guard interval) is introduced between the OFDM symbols. But the cyclic prefix contributes about 20% ...
Gaussian mixture models for spoken language identification
(Dhirubhai Ambani Institute of Information and Communication Technology, 2006)
Language Identification (LID) is the problem of identifying the language of any spoken utterance irrespective of the topic, speaker or the duration of the speech. Although A very huge amount of work has been done for ...
Passive direction of arrival (DOA) tracking
(Dhirubhai Ambani Institute of Information and Communication Technology, 2006)
The work reported in this thesis is concerned with the Passive Direction Of Arrival (DOA) tracking problem. Traditionally model based approach is used to solve tracking problems. The measurements (DOA) are nonlinearly ...
Automatic car license plate recognition
(Dhirubhai Ambani Institute of Information and Communication Technology, 2005)
In most traffic applications, someone gathers information manually at the scene or watching the video of a scene. With automatic car license plate recognition using image processing techniques, new ways of capturing traffic ...
Localization of target in wireless sensor networks
(Dhirubhai Ambani Institute of Information and Communication Technology, 2005)
Advances in hardware and wireless network technology have made it possible to build and deploy dense ad-hoc wireless sensor networks of nodes collecting and disseminating information. One problem that arises in ad-hoc ...
Architecture design for preliminary ECG analysis system using new DFT based analysis technique
(Dhirubhai Ambani Institute of Information and Communication Technology, 2007)
This thesis proposes a hardware architecture of an ASIC for a portable ECG analysis system. The device is meant to record and analyze ECG signals in real time so as to detect the presence of abnormalities. In order to ...
Reconfigurable application specific instruction set processor for kalman filter (R-ASIK)
(Dhirubhai Ambani Institute of Information and Communication Technology, 2006)
Kalman filter is one of the most important signal processing algorithms used in many tracking applications. The main challenges for hardware implementation of Kalman filter include compute intensiveness O (n3) of the ...
Content-based image retrieval system for multi-object images using a combination of features
(Dhirubhai Ambani Institute of Information and Communication Technology, 2006)
Content-based image retrieval (CBIR) is a research area dedicated to address the retrieval of images based on automatically derived features from the content of the images in database. Traditional CBIR systems generally ...
Two-level pricing scheme for congestion control and service differentiation in the Internet
(Dhirubhai Ambani Institute of Information and Communication Technology, 2006)
It is the property of any good service provider that, if a user is ready to pay for the services he demands, the provider will ensure that the requested level of service is made available. Is this possible in the Internet? ...
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 ...