Browsing by Subject "Signal processing"
Now showing items 1-20 of 21
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Application of compressive sensing to tow-way relay channel estimation
(Dhirubhai Ambani Institute of Information and Communication Technology, 2012)An Amplify and Forward Two-Way Relay Network is one where two nodes transmit data to each other via an intermediate relay. The relay amplifies the superimposed data from both the nodes before sending it to both the nodes. ... -
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 ... -
Auditory representation learning
(Dhirubhai Ambani Institute of Information and Communication Technology, 2018)Representation learning (RL) or feature learning has a huge impact in the field of signal processing applications. The goal of the RL approaches is to learn the meaningful representation directly from the data that can be ... -
Built-in self test architecture for mixed signal systems
(Dhirubhai Ambani Institute of Information and Communication Technology, 2009)Built-in self test architecture or BIST as we call them, are the necessity of time since the shrinking sizes of component on-chip with advance in IC technology are making it BIST artistries are being rapidly developed and ... -
Design & layout of a low voltage folding & interpolation ADC for high speed applications
(Dhirubhai Ambani Institute of Information and Communication Technology, 2012)Analog to Digital Converters (ADC) and Digital to Analog Converters (DAC) plays a vital role in mixed analog signalling, communication and digital signal processing world. Now a day, the demand for designing of high ... -
Design of low-voltage, low-power, wide-band CMOS LC VCO using active inductors
(Dhirubhai Ambani Institute of Information and Communication Technology, 2008)In this thesis the design of low-voltage, low-power, wide-band CMOS LC VCO using active inductor has been proposed. The oscillator is based upon the classic LC-tuned negative-resistance topology, with a novel active inductor ... -
Effect of channel asymmetry on reputation based cooperation mechanisms in mobile ad-hoc networks
(Dhirubhai Ambani Institute of Information and Communication Technology, 2008)Enforced cooperation among MANET nodes is an active research issue. In applications, where the users have different goals and there is no central authority to control them, users may become selfish. These nodes may not ... -
FIR filter for high speed 60 GHz wireless communications.
(Dhirubhai Ambani Institute of Information and Communication Technology, 2013)In this thesis report the design and implementation of the FIR filter at 5 GS/s presented. IEEE 802.15.3c standard declared unlicensed band from 57 to 66 GHz. This 60 GHz wireless communication transmitter uses interpolator ... -
FPGA implementation of multiband and multimode modem for software defined radio (SDR)
(Dhirubhai Ambani Institute of Information and Communication Technology, 2012)Now a days Software Defined Radio(SDR) is becoming popular for wireless communication because of it’s flexibility to change as per requirement through software. The work presented here describes the different methods of ... -
Hardware implementation of multiband and multimode modem for software defined radio/ cognitive radio
(Dhirubhai Ambani Institute of Information and Communication Technology, 2011)Present day programmable hardware and SDR (Software Defined Radio) have enabled radio processing to switch from analog to digital. The work presented here describes a method of designing a multiband & multimode modulator ... -
High-speed 512-point FFT single-chip processor architecture
(Dhirubhai Ambani Institute of Information and Communication Technology, 2008)This thesis present a fully parallel novel fixed point 16-bit word width 512 point FFT processor architecture. The 512 point FFT is realized by decomposing it into three 8 point FFT units. This approach reduces the number ... -
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 ... -
Learn Graph Laplacian for Sparse Frequency Domain Representation
(Dhirubhai Ambani Institute of Information and Communication Technology, 2017)"Learning of graph topology plays an important role in processing structure and unstructured data which can be represented as graph signals. Graph topology for a given graph signal is not always readily available from the ... -
Low-power multi-ported register file for digital signal processors
(Dhirubhai Ambani Institute of Information and Communication Technology, 2011)Digital Signal Processors (DSPs) also come under the category of processors in which Multi-ported register files can find their applications widely. Most of the DSP applications do not benefit from further speeding-up after ... -
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 ... -
Oblique projection operator
(Dhirubhai Ambani Institute of Information and Communication Technology, 2010)This thesis presents the understanding usefulness of Oblique Projector in signal processing like signal recovery, signal representation and reconstruction. This thesis also presents the different recursive oblique projector ... -
Phonetic segmentation: unsupervised approach
(Dhirubhai Ambani Institute of Information and Communication Technology, 2013)Phonetic segmentation can find its potential application for Automatic Speech Recognition (ASR) and Text-to-Speech (TTS) Synthesis systems. In this thesis, we propose use of different spectral features viz., Mel Frequency ... -
Representation theory in signal processing: some connections through gap
(Dhirubhai Ambani Institute of Information and Communication Technology, 2005)This thesis is concerned with the study of some of the recent developments in the area of signal processing that arise from the connections of discrete transforms and their inherent symmetries with the representation theory ... -
Statistical co-analysis, robust optimization and diagnosis of USB 2.0 system for signal and power integrity
(Dhirubhai Ambani Institute of Information and Communication Technology, 2009)Signal Integrity (SI) and Power Integrity (PI) are the most critical issues as semiconductor industry is moving towards higher operational speeds. Signal integrity and power integrity are such issues that should be looked ... -
Transmultiplexer design using different filters
(Dhirubhai Ambani Institute of Information and Communication Technology, 2010)Transmultiplexer is one of the applications of Filter banks, which is used to transmit many signals simultaneously through a single channel and so that to separate at receiving end. Design of transmultiplexer using prototype ...