Now showing items 108-127 of 597

• #### Code design for multiple-antenna systems ﻿

(2001)
We propose a systematic method for the design of space-time codes for AWGN slowly and fast Rayleigh fading channels. This can be accomplished by adopting a concatenated space-time code structure, where an orthogonal transmit ...
• #### Code design for the relay channel ﻿

(2007)
The design of wireless communication networks is based on the premise that networks are collections of reliable point-to-point links between communicating nodes. Such a communication model, although simple, is inefficient ...
• #### Coding for Phase Change Memory Performance Optimization ﻿

(2012-09-05)
Over the past several decades, memory technologies have exploited continual scaling of CMOS to drastically improve performance and cost. Unfortunately, charge-based memories become unreliable beyond 20 nm feature sizes. ...

(2001)
A fixed bandwidth expansion can be achieved either by coding or spreading, while each have different effect on the resultant signal space. Coding increases both Shannon and Fourier bandwidth whereas spreading only increases ...
• #### Coherent multiscale image processing using quaternion wavelets ﻿

(2006)
This thesis develops a quaternion wavelet transform (QWT) as a new multiscale analysis tool for geometric image features. The QWT is a near shift-invariant tight frame representation whose coefficients sport a magnitude ...
• #### Comparison of laser-produced plasma target materials for pumping the 109 nm xenon(2+) Auger laser ﻿

(1995)
Short wavelength lasers have many potential applications in scientific and engineering fields. The goal of this research was to improve the output energy of the Xe$\sp{2+}$ 109 nm laser. We compared cadmium, copper, gold, ...
• #### Complexed Multifunctional Metallic and Chalcogenide Nanostructures as Theranostic Agents ﻿

(2013-12-03)
Nanostructures have attracted substantial attention due to their distinctive properties and various applications. Nanostructures consisting of multiple morphologies and/or materials have recently become the focus of intense ...
• #### Component-based adaptation for mobile computing ﻿

(2002)
Component-based adaptation is a novel approach for adapting applications to the limited availability of resources such as bandwidth and power in mobile environments. Component-based adaptation works by calling on the ...
• #### Compressed Sensing for Imaging Applications ﻿

(2008)
Compressed sensing is a new sampling theory which allows reconstructing signals using sub-Nyquist measurements. This can significantly reduce the computation re­quired for both image and video whether during acquisition ...
• #### Compressive sensing for signal ensembles ﻿

(2010)
Compressive sensing (CS) is a new approach to simultaneous sensing and compression that enables a potentially large reduction in the sampling and computation costs for acquisition of signals having a sparse or compressible ...
• #### Compressive Sensing in Positron Emission Tomography (PET) Imaging ﻿

(2015-04-16)
Positron emission tomography (PET) is a nuclear medicine functional imaging modality, applicable to several clinical problems, but especially in detecting the metabolic activity (as in cancer). PET scanners use multiple ...

(1978)

(1967)
• #### CONDUCTIVITY STUDIES IN IRON-DOPED LITHIUM-NIOBATE BY PHASE HOLOGRAPHY ﻿

(1981)
By the use of holographic storage techniques, the conductivity of iron doped lithium niobate has been investigated. The results indicate that the conductivity of the material immediately after hologram formation is much ...
• #### Congestion control and complexity reduction of large-scale networks ﻿

(2002)
The current version of Transport Control Protocol (TCP) does not meet the high demands of the exponentially growing Internet. The packet loss is one of the major limiting factors on the performance and the quality of ...
• #### Connexions: An architecture for Web-based educational materials ﻿

(2001)
This thesis describes Connexions, a powerful new architecture for managing web-based educational materials. Connexions, consisting of five components, enables course instructors to take advantage of the cross-linked nature ...
• #### Context in Mobile System Design: Characterization, Theory, and Implications ﻿

(2012-09-05)
Context information brings new opportunities for efficient and effective applications and services on mobile devices. Many existing work exploit the context dependency of mobile usage for specific applications, and show ...

(1974)
• #### Control methods for rigid and flexible kinematically redundant robot manipulators ﻿

(1991)
In the coming era of the Space Station Freedom, many robotic manipulators will be working simultaneously on various parts of the space station structure. Since each link of a manipulator is a moving body relative to other ...
• #### Controlled multi-step purification of single-walled carbon nanotubes ﻿

(2005)
A controlled and scalable multi-step purification method has been developed to remove iron impurity and non-nanotube carbon materials from raw single-walled carbon nanotubes produced in the HiPco (high pressure CO) process. ...