Now showing items 1-10 of 2068
Visualizing Texts, Modeling History: Possibilities for Digital Scholarship in the Humanities
Presentation given for scholars in hemispheric American studies, October 8, 2008
Using Visualization in the Classroom
Presentation given at the Teaching with Technology brown bag, Rice University, October 15, 2008
Loss inference in unicast network tomography based on TCP traffic monitoring
Network tomography is a promising technique for characterizing the internal behavior of large-scale networks based solely on end-to-end measurements. Despite the efficiency of active probing in most network loss tomography methods, these measurements impose an additional burden on the network in terms of bandwidth and network resources. They can ...
Toward a theory of information processing
Information processing is performed when a system preserves some aspects of the information encoded by its input while it suppresses others. To describe a system's information processing capability, input and output need to be compared in a way invariant to the signal's form and how it represents information. We describe an approach to quantify ...
EDIF netlist optimization of pipelined designs
This thesis describes the design, implementation, and evaluation of a software system for optimizing synthesized logic circuits. The particular implementation described is targeted to the Xilinx Virtex family of FPGAs, but the techniques developed are relevant to other families of array-based semi-custom programmable logic circuits. One of the unique ...
Sphere detection and LDPC decoding algorithms and architectures for wireless systems
Ever increasing demand for high data rate wireless transmissions with high spectral efficiency leads to utilization of communication systems with multiple transmit and receive antennas. In addition, excellent error-rate performance can be achieved with iterative receiver structure composed of inner detection and outer decoding. In this work we design ...
Noise suppression and motion estimation in medical ultrasound imaging
Echocardiographic imaging is a primary modality in the diagnosis of heart disease. Compared to other imaging techniques, such as X-Ray, MRI, and PET, ultrasound imaging owes its great popularity to the fact that it is a safe and non-invasive procedure for visualizing the heart and vasculature. The ultrasound image however is corrupted by speckle, ...
Wavelet-based signal modeling and processing algorithms with applications
Good signal representation and the corresponding signal processing algorithms lie at the heart of the signal processing research effort. Since the 1980's wavelet analysis has become more and more a mature tool in many applications such as image compression due to some key advantages over the traditional Fourier analysis. In this thesis we first develop ...
Wavelength shift keying technique to reduce four-wave mixing crosstalk in WDM
In low dispersion fibers, the four-wave mixing (FWM) spectrum is symmetric with respect to the zero-dispersion wavelength. This thesis analyzes a wavelength shift keying (WSK) technique, a modification of the standard wavelength division multiplexing (WDM) system. WSK uses symmetric wavelength assignment and balanced detection to cancel FWM crosstalk ...