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Spectral estimation using WRLS algorithm for multiband detection
(Dhirubhai Ambani Institute of Information and Communication Technology, 2008)
Signal parameter estimation in the presence of noise has been a key area of research. Many applications have benefited from advancements made in this field within the last two decades. The method proposed in the thesis ...
Video compression using color transfer based on motion estimation
(Dhirubhai Ambani Institute of Information and Communication Technology, 2008)
Many compression techniques were developed in last decade and are being used in many applications like HDTV, Videoconferencing, Videophone, multimedia work stations and mobile image communications. It is also certain that ...
Design of low power and high speed decoder for 1MB memory
(Dhirubhai Ambani Institute of Information and Communication Technology, 2008)
Technology scaling is accompanied by rise in leakage power dissipation. This thesis proposes a voltage controllable circuit in the feedback path of the decoder, which drastically reduces the standby leakage current with ...
FPGA implementation of direct sequence spread spectrum techniques
(Dhirubhai Ambani Institute of Information and Communication Technology, 2008)
This work presents the performance, noise analysis and FPGA implementation of Direct Sequence Spread Spectrum technique. Performance of signal increases as increasing parity bits in Hamming code algorithm. Increasing parity ...
Frequency offset estimation in OFDM signals using particle filtering along with resampling methods
(Dhirubhai Ambani Institute of Information and Communication Technology, 2008)
Frequency offset is one of the main effects the Bit Error Rate(BER) in orthogonal frequency division multiplexing (OFDM). There are many applications which depend on OFDM. The present method describes the estimation of ...
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 ...
Low cost design of IFFT module for dolby AC-3 decoder
(Dhirubhai Ambani Institute of Information and Communication Technology, 2008)
Dolby AC-3 is a flexible audio data compression technology capable of encoding a range of audio channel formats into a low rate bit stream. AC-3 is the de facto audio standard for high-end digital consumer multimedia ...
FPGA implementation of image compression algorithm using wavelet transform
(Dhirubhai Ambani Institute of Information and Communication Technology, 2008)
This work presents FPGA implementation of image compression algorithm by using wavelet transform. Here the emphasis has been made on algorithmic encoding, the first step of image compression problem. The transform that has ...
Orthogonal frequency division multiplexing synchronization techniques
(Dhirubhai Ambani Institute of Information and Communication Technology, 2008)
Synchronization plays a major role in the design of a digital communication system. Essentially, this function aims at retrieving some reference parameters from the received signal that are necessary for reliable data ...
Design of multi-standard RF front end receiver using novel low IF topology
(Dhirubhai Ambani Institute of Information and Communication Technology, 2008)
This thesis presents the multi-standard receiver architecture and the corresponding RF front-end design supporting Bluetooth and IEEE 802.11a WLAN standards. To maximize the level of component share in the proposed ...