Now showing items 85-104 of 597

• #### Baseband architecture design for future wireless base-station receivers ﻿

(2000)
This thesis demonstrates the use of designing efficient algorithms and architectures to meet the real-time requirements of future wireless base-station receivers. Next generation receivers will require orders-of-magnitude ...
• #### Bayesian Methods for Learning Analytics ﻿

(2014-06-30)
Learning Analytics (LA) is a broad umbrella term used to describe statistical models and algorithms for understanding the relationship be- tween a set of learners and a set of questions. The end goal of LA is to understand ...
• #### Beamforming in MIMO-OFDM systems: Codebook design for efficient implementation ﻿

(2007)
Quantized feedback in multiple antenna systems has potential to increase throughput and/or reduce probability of outage. In this work, we present a method to generate quantization codebooks tailored for efficient implementation ...
• #### Beamforming on Mobile Devices: A First Study ﻿

(2011)
In this work, we report the first study of beamforming on mobile devices. We first show that beamforming is already feasible on mobile devices in terms of form factor, power efficiency and device mobility. We then investigate ...
• #### BeamSwitch: System solution for energy-efficient directional communication on mobile devices ﻿

(2010)
Directional communication has the potential to improve both the energy efficiency of wireless communication without sacrificing its quality. We present a system solution, BeamSwitch, for directional communication on mobile ...
• #### Beyond Interference Avoidance: Distributed Sun-network Scheduling in Wireless Networks with Local Views ﻿

(2013-09-16)
In most wireless networks, nodes have only limited local information about the state of the network, which includes connectivity and channel state information. With limited local information about the network, each node’s ...
• #### Binaural localization using interaural cues ﻿

(1990)
Major nuclei of the superior olivary complex--the lateral superior olive (LSO) and the medial superior olive (MSO) are presumed to play a major role in the localization of sound signals using interaural level and interaural ...

(1968)
• #### Bounds and protocols for a two-way multiple node channel ﻿

(2007)
Often in multiuser wireless systems like cellular networks, data is present in both directions (uplink and downlink). One way to formulate protocols for such networks, is to design the uplink and downlink independently. ...
• #### Bounds for optimal compressed sensing matrices and practical reconstruction schemes ﻿

(2008)
Compressed Sensing (CS) is an emerging field that enables reconstruction of a sparse signal x &isin; Rn that has only k &lt;&lt; n non-zero coefficients from a small number m &lt;&lt; n of linear projections. The ...
• #### 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 ...
• #### 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 ...
• #### 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 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 ...
• #### 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 ...
• #### 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 ...
• #### Classification Techniques for Undersampled Electromyography and Electrocardiography ﻿

(2012-10-01)
Electrophysiological signals including electrocardiography (ECG) and electromyography (EMG) are widely used in clinical environments for monitoring of patients and for diagnosis of conditions including cardiac and neuromuscular ...