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A pulsed electromagnet controller for prepolarized MRI
(Texas A&M University, 2001)
Magnetic resonance imaging (MRI) is a popular medical imaging modality that provides high resolution images with superior contrast. Conventional MRI systems rely on large magnets to generate the main magnetic field, B₀, ...
Design considerations for band-pass sigma-delta modulators
(Texas A&M University, 2001)
Traditionally, the design of band-pass sigma-delta modulators is composed of two steps, the first at the system level and the second at the transistor level. The transition from the system level to the transistor level ...
Interface-trap charge-pump temperature sensor
(Texas A&M University, 2001)
This thesis deals with a new method to measure die surface temperature of VLSI chips. On-chip temperature sensors are widely used in newer VLSI circuits as a monitoring technique for fault detection and prevention. The ...
VLSI implementation of encoder and decoder for low-density parity-check codes
(Texas A&M University, 2001)
The aim of this research is to implement an encoder and a message-passing decoder for low-density parity-check codes in hardware. The desired data rate is 44.8 Mbps and the channel is an Additive White Gaussian Noise(AWGN) ...
Coded modulation with Low Density Parity Check codes
(Texas A&M University, 2001)
This thesis proposes the design of Low Density Parity Check (LDPC) codes for cases where coded modulation is used. We design these codes by extending the idea of Density Evolution (DE) that has been introduced as a powerful ...
Computation of the maximum loadability of a power system using nonlinear optimization
(Texas A&M University, 2001)
In recent years, power systems have undergone radical changes by becoming deregulated. Many electric companies have met new requirements and found ways to keep up with the changes in power systems. Issues of transfer ...
Distributed optical fiber vibration sensing
(Texas A&M University, 2001)
This thesis presents a distributed optical fiber vibration sensor. The purpose of this sensing system is to monitor, in real time, the status of railcars by burying an optical fiber underground beside the rails. Using a ...
xDSL line driver design
(Texas A&M University, 2001)
xDSL line driver is a very important element in xDSL systems. This thesis proposes a three stage xDSL line driver solution based on a multipath feedforward compensation principle. TSMC 0.8 micro meter high voltage BiCMOS ...
Decision-feedback multiple differential detection for space-time coded OFDM systems
(Texas A&M University, 2001)
Differential detection (DD) is an attractive simple technique in flat-fading environments since it is very robust and does not require carrier phase tracking. However, performance of the conventional DD method in flat-fading ...
Distinguishing congestion and error losses: an ECN/ELN based scheme
(Texas A&M University, 2001)
TCP is the widely used protocol on the Internet because of its reliability and congestion control mechanisms. TCP congestion control works by reducing the TCP sender's congestion window whenever there is a packet loss. But ...