Now showing items 207-226 of 1736

• #### Broadcast Detection Structures with Applications to Sensor Networks ﻿

(2006-03-01)
Data broadcasting is potentially an effective and efficient way to share information in wireless sensor networks. Broadcasts offer energy savings over multiple, directed transmissions, and they provide a vehicle to exploit ...
• #### Broadcast Space-Time Coding ﻿

(2001-08-20)
In this paper, we study transmission techniques for broadcast channels with a single transmitter and multiple receivers. The transmitter is assumed to be equipped with multiple antennas. Further, each receiver is interested ...
• #### Buckminsterfullerene purification and buckminsterfullerene film characterization ﻿

(1994)
A method is described which utilizes the difference in vapor pressure between C$\sb{60}$ and heavier fullerenes to produce C$\sb{60}$ powder with a purity of 99.97%. Using the material from this process allows for the ...
• #### Building a map for robot path planning by fusing video images and laser rangefinder data ﻿

(1993)
This thesis describes algorithms that fuse the data from a single video camera and a laser rangefinder. By merging information from these sensors, the algorithms build a digital map of the local environment for a robot to ...
• #### Bursting, beating, and chaotic modes in mathematical models of the R15 cell in Aplysia ﻿

(1989)
Chaotic regimes have been observed experimentally in neurons as well as in deterministic neuronal models. The bursting R15 cell in the abdominal ganglion of Aplysia has been the subject of extensive mathematical modeling. ...
• #### Cache management in scalable network servers ﻿

(2000)
For many users, the perceived speed of computing is increasingly dependent on the performance of network server systems, underscoring the need for high performance servers. Cost-effective scalable network servers can be ...
• #### A Canonical Covariance Based Method for Generalized Joint Signal Representations ﻿

(1996-04-20)
Generalized joint signal representations extend the scope of joint time-frequency representations to a richer class of nonstationary signals. Cohen's marginal-based generalized approach is canonical from a distributional ...
• #### The Capacity of Average and Peak Power Constrained Fading Channels with Channel Side Information ﻿

(2004-03-01)
We derive the ergodic capacity of discrete-time fading channel with additive Gaussian noise subject to both peak and average power constraint. The average power can be interpreted as the cost that we incur to achieve a ...
• #### Capacity of low power multiuser systems with antenna arrays ﻿

(2005)
In this thesis, we study wireless multiuser communication systems in the regime of low spectral efficiencies, where users and the multiple access point are equipped with antenna arrays. Our first contribution is to develop ...
• #### CAPE - VLSI Implementation of a Systolic Processor Array: Architecture, Design and Testing ﻿

(1991-06-20)
The SVD is an important matrix decomposition in many real-time signal processing, image processing and robotics applications. Special-purpose processor arrays can achieve significant speed-up over conventioinal architectures ...
• #### Challenges in Computer Architecture Evaluation ﻿

(2003-08-20)
A report to the US National Science Foundation argues that simulation and benchmarking technology will require a leap in capability within the next few years to maintain ongoing innovation in computer systems.
• #### Channel equalization algorithms for MIMO downlink and ASIP architectures ﻿

(2004)
Processors for mobile handsets in 3G cellular systems require: high speed, flexibility and low power dissipation. While computationally efficient, ASIC processors are often not flexible enough to support necessary variations ...
• #### Channel Equalization Algorithms for MIMO Downlink and ASIP Architectures ﻿

(2004-04-01)
Processors for mobile handsets in 3G cellular systems require: high speed, flexibility and low power dissipation. While computationally efficient, ASIC processors are often not flexible enough to support necessary ...
• #### Channel Estimation and Signal Detection for Multi-Carrier CDMA Systems with Pulse-Shaping Filter ﻿

(2003-05-20)
We consider the problem of digital communication in a fading environment using the Multi-Carrier CDMA technology. By incorporating the effect of the pulse-shaping filter in the channel estimation and signal detection ...
• #### Channel estimation for code division multiple access communication systems ﻿

(1994)
We consider the estimation of channel parameters for code division multiple access (CDMA) communication systems operating over channels with either single or multiple propagation paths. We present two approaches for ...
• #### Channel Estimation for Multirate DS-CDMA Systems ﻿

(2000-11-20)
The problem of channel estimation for multiple data rate Direct-Sequence Code-Division Multiple-Acess (DS-CDMA) systems is addressed. The derived algorithms are suitable for both variable chipping rate and/or variable ...
• #### Characterization of block memory operations ﻿

(2006)
Block memory operations are frequently performed by the operating system and consume an increasing fraction of kernel execution time. These operations include memory copies, page zeroing, interprocess communication, and ...
• #### Characterization of Iron Doped Lithium Niobate for Holographic Storage Applications ﻿

(1976-06-20)
A detailed study of eight systematically chosen Fe:LiNb0<sub>3</sub> crystals is presented. Correlation between the photorefractive sensitivity and various chemical properties of Fe:LiNb0<sub>3</sub> is investigated in ...
• #### Charge Transfer Plasmons: Optical Frequency Conductances and Tunable Infrared Resonances ﻿

(2015)
A charge transfer plasmon (CTP) appears when an optical-frequency conductive pathway between two metallic nanoparticles is established, enabling the transfer of charge between nanoparticles when the plasmon is excited. ...
• #### Charge Transport and Transfer at the Nanoscale Between Metals and Novel Conjugated Materials ﻿

(2012-09-05)
Abstract Organic semiconductors (OSCs) and graphene are two classes of conjugated materials that hold promise to create flexible electronic displays, high speed transistors, and low-cost solar cells. Crucial to understanding ...