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Modeling ad hoc network as queuing network
(Dhirubhai Ambani Institute of Information and Communication Technology, 2006)
Ad hoc networks are networks in which there is no fixed infrastructure. The mobile nodes are independent and have distributed control. Modeling of Ad hoc network is a critical task, because it includes modeling of mobile ...
Efficient algorithms for hierarchical online rule mining
(Dhirubhai Ambani Institute of Information and Communication Technology, 2006)
Association rule Mining, as one of the technologies equipped with Data Mining, deals with the challenge of mining the informative associations from the fast accumulating data. From the past decade, the research community ...
Automation of model based estimation filters
(Dhirubhai Ambani Institute of Information and Communication Technology, 2006)
Model based estimation filters are widely used in the field of estimation. They are applied for various types of dynamic and measurement models. There are different ways of solving these model based state estimation problems. ...
Identifying the protein coding regions in DNA using IIR antinotch filter
(Dhirubhai Ambani Institute of Information and Communication Technology, 2007)
Genomic Signal Processing is an emerging interdisciplinary area. The problem of Identifying Protein Coding Regions in DNA is addressed using signal processing techniques in this work. DNA can be thought of a string formed ...
Symbol detection in MIMO systems
(Dhirubhai Ambani Institute of Information and Communication Technology, 2008)
Multiple input multiple output symbol detection methods are observed under frequency flat fading AWGN channel condition. The modulation method employed is Quadrature amplitude modulation (QAM). The various symbol detection ...
Model based channel shortening technique for IEEE 802.11a OFDM system
(Dhirubhai Ambani Institute of Information and Communication Technology, 2007)
Channel shortening tehniques for IEEE802.11a OFDM system are studied. Their performance is evaluated for various standard channel models. A model based channel shortening technique is presented, which reduces the computational ...
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 ...
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 ...
Design of low voltage high performance voltage controlled oscillator
(Dhirubhai Ambani Institute of Information and Communication Technology, 2008)
In this thesis an ultra low voltage differential capacitive feedback VCO is being proposed .The VCO operates at very low supply voltage of 0.6V.The VCO uses techniques like Forward Body Bias (FBB), and capacitive feedback ...
1.5V, 2.4GHz highly linear CMOS downconversion mixer
(Dhirubhai Ambani Institute of Information and Communication Technology, 2008)
In the tremendous growth of wireless handheld devices, low power consumption becomes a major consideration in radio frequency integrated circuit (RFIC) designs. This thesis explores low voltage low power RFIC design for ...