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Now showing items 11-20 of 29
New orthogonal space-time block codes with full diversity
(Texas A&M University, 2002)
It has been shown from the Hurwitz-Radon theorem that square complex orthogonal space-time code designs cannot achieve full diversity and full rate simul-taneously, except in the two transmit antenna case. However, this ...
Parameter estimation of vector controlled induction machine
(Texas A&M University, 2002)
This thesis deals with the modeling and control of induction machine under indirect vector control with parameter estimation in order to get better field oriented performance. Because of its excellent decoupled control, ...
Bayesian wavelet shrinkage in transformation based linear models
(Texas A&M University, 2002)
Most of the noise models in signal processing are either additive or multiplicative. However, the widely held wavelet shrinkage estimators for signal denoising deal only with additive noise. In this thesis, a new Bayesian ...
Design of oversampling current steering DAC with 640MHz equivalent clock frequency
(Texas A&M University, 2002)
A DAC (Digital-to-Analog Converter) architecture based on the current steering method is proposed. The architecture exploits the first order sigma-delta modulator, oversampling technique, multi-bit and MASH (multi stage ...
Combined wavelet video coding and error control for internet streaming and multicast
(Texas A&M University, 2002)
In the past several years, advances in Internet video streaming have been tremendous. Originally designed without error protection, Receiver-driven layered multicast (RLM) has proved to be a very effective scheme for ...
Characterization and detection of incipient underground cable failures
(Texas A&M University, 2002)
For distribution systems, failure of an underground cable results in an unscheduled outage. An unscheduled outage costs a utility manpower and materials, and affects their reliability index. Thus, the need for an on-line, ...
Stability issues in IC Low Drop Out voltage regulators
(Texas A&M University, 2002)
Performance issues of IC Low Drop Out (LDO) voltage regulators, with specific reference to stability, are discussed in this thesis. Evaluation of existing frequency compensation schemes and their performances across ...
Non-linear analysis of advanced high-phase number induction machines for adjustable speed drive applications
(Texas A&M University, 2002)
This study focuses on the effect of high order phases on electrical machines' parameters and performance. A general approach has been conducted using the induction motor equivalent circuit, winding function and conventional ...
A 3-phase AC to AC matrix converter using the Venturini method
(Texas A&M University, 2002)
This thesis outlines the design and development of the AC to AC matrix converter, using the Venturini method. The elimination of the intermediate DC link capacitor needed for the common converters used today, makes it an ...
Iterative multiuser detection techniques for CDMA systems
(Texas A&M University, 2002)
The presence of the multiple-access interference (MAI) and intersymbol interference (ISI) constitutes a major impediment to reliable communications in multipath code-division multiple-access (CDMA) channels. Recently ...