Browsing M Tech Dissertations by Issue Date
Now showing items 61-80 of 820
-
Design of laser driver circuit
(Dhirubhai Ambani Institute of Information and Communication Technology, 2005)Designing an Optoelectronic Integrated Circuit (OEIC) is an attractive field of research as it bridges the interface between electrical and optical components. The design of laser driver in optical transmitter is very ... -
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% ... -
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 ... -
FM based pipeline ADC
(Dhirubhai Ambani Institute of Information and Communication Technology, 2006)This thesis aims at designing a new architecture for an FM based pipelined Analog to Digital Converter (ADC). It is based on the fact that power is a function of voltage and therefore handling with voltage becomes a difficult ... -
Extremely low voltage operational amplifier design with rail-to-rail input common mode range
(Dhirubhai Ambani Institute of Information and Communication Technology, 2006)Increasing trends towards battery operated systems demand circuits to be designed at low voltages. Low voltage operation severely limits the operational amplifier as a voltage buffer as the input common mode range available ... -
Implementation of constant gm CMOS op-amp input stage using overlapping of transition region at 0.18 um technology
(Dhirubhai Ambani Institute of Information and Communication Technology, 2006)Operational amplifier is the backbone of most of analog circuit design. For low voltage applications, op-amp should have a rail-to-rail common mode input voltage. This report describes the implementation of a constant gm ... -
Speech driven facial animation system
(Dhirubhai Ambani Institute of Information and Communication Technology, 2006)This thesis is concerned with the problem of synthesizing animating face driven by new audio sequence, which is not present in the previously recorded database. The main focus of the thesis is on exploring the efficient ... -
Resource discovery in computational grids: quantitative comparison and analysis of MDS and DHT
(Dhirubhai Ambani Institute of Information and Communication Technology, 2006)Grid Information Services provided by most of the grid middlewares aim at discovering resources in wake of large number of Grid nodes. Many Grid Information Services (GIS) have been deployed in different Grid middlewares. ... -
Low power and high speed sample and hold circuit
(Dhirubhai Ambani Institute of Information and Communication Technology, 2006)In this thesis work the design of a high speed and low power CMOS sample and hold circuit as a front-end block of pipelined analog-to-digital converter is described. The circuit consists of bottom-plate sampling with ... -
Secure and efficient key assignment scheme for dynamic access control in a hierarchy
(Dhirubhai Ambani Institute of Information and Communication Technology, 2006)The users belonging to an organization are often assigned different access permissions depending on their security class. In this situation, the users belonging to a higher security class are allowed access to the information ... -
Mobility aware MANET routing protocol using cross layer design
(Dhirubhai Ambani Institute of Information and Communication Technology, 2006)Mobile Adhoc Network (MANET) is a dynamic network with time varying topology and time varying network resources. Due to the error-prone wireless channel and high mobility, traditional protocols of wired networks cannot be ... -
Statistical delay modeling and analysis for system on chip
(Dhirubhai Ambani Institute of Information and Communication Technology, 2006)It is seen that designing using conventional methodologies in Deep Sub Micron geometries, at times, ends up in very pessimistic design and less yield. This is because, today’s tools don’t consider statistical variation of ... -
Design of a low power, high speed MAC unit
(Dhirubhai Ambani Institute of Information and Communication Technology, 2006)MAC operation is the main computational kernel in any digital signal processing architectures. MAC consumes nearly 2/3 portion of total power dissipated in a DSP block. This thesis deals with the design of a low power, ... -
Low power high slew-rate adaptive biasing circuit for CMOS amplifiers
(Dhirubhai Ambani Institute of Information and Communication Technology, 2006)Adaptive biasing technique in analog and mixed signal integrated circuit design is used mainly to reduce the power and improve the driving capability. It has found many applications, like power amplifiers in RF communication ... -
Bandwidth compression
(Dhirubhai Ambani Institute of Information and Communication Technology, 2006)Bandwidth compression implies a reduction in bandwidth of an information carrying signal without reducing the information content of the signal. Methods such as PCM, DPCM and other redundancy removal algorithms rely on the ... -
Integrated chaos generator
(Dhirubhai Ambani Institute of Information and Communication Technology, 2006)With the explosion of information, the need to cater to the demands of increased number of users is of paramount importance. Spread Spectrum Technique used in wideband communications have proved to utilize the limited ... -
Detection of unauthorized vehicle movement across the forest boundary using wireless sensor networks
(Dhirubhai Ambani Institute of Information and Communication Technology, 2006)Wireless sensor network is a collection of small sensor nodes. These nodes consist of sensing, communication and computation capability that attracts a large number of applications. Wireless sensor networks are deployed ... -
Linearity enhancement technique for low noise amplifiers
(Dhirubhai Ambani Institute of Information and Communication Technology, 2006)The development of CMOS technology in to deep sub micron enables the use of such technology for implementation for GHz RF circuits. Personal communication needs a low cost and low noise RF transceiver for cellular applications ... -
Decoupling delay and bandwidth in stateless core networks
(Dhirubhai Ambani Institute of Information and Communication Technology, 2006)The use of network applications like VoIP, video conferencing and online stock marketing has greatly increased over the past few years. These applications require performance bounds on bandwidth, delay and delay variations ...