ECE Department Calendar

Mar
3
Mon
Graduate Seminar – “Sparsity and Low Rank for Robust Social Data Analytics and Networking” @ Warnock (WEB) 1230
Mar 3 @ 10:00 pm – 11:00 pm
Graduate Seminar - "Sparsity and Low Rank for Robust Social Data Analytics and Networking" @ Warnock (WEB) 1230

Dr. Gonzalo Mateos, Visiting Scholar

Carnegie Mellon University

When: Monday, March 3, 2014 at 3:05 p.m.
Where: Warnock 1230

Abstract

The information explosion propelled by the advent of personal computers, the Internet, and the global-scale communications has rendered statistical learning from “Big Data” increasingly important for analysis and processing. Along with data adhering to postulated models, present in large volumes of data are also those that do not — and are referred to as outliers. In this talk, I will start with an approach to outlier-resilient principal component analysis, which establishes a neatlink between the seemingly unrelated notions of sparsity and robustness to outliers, even when the signals involved are not sparse. I will argue that controlling sparsity of model residuals leads to statistical learning algorithms that are computationally affordable and universally robust. The impact of these ideas will be demonstrated in applications as diverse as identification of aberrant responses in personality assessment surveys, and unveiling communities in social networks, as well as intruders from video surveillance data. In the second part of the talk, I will switch focus towards the important task of unveiling and mapping-out network traffic anomalies given link-level traffic measurements. Leveraging the low intrinsic-dimensionality of end-to-end network flows and the sparse nature of anomalies, I will construct an estimated map of anomalies in real time to aid in monitoring the network health state. If time allows, I will finally highlight anew additional domains that include predicting network-wide path latencies, and load curve cleansing and imputation — a critical task in green grid analytics and energy management with renewables.

Speaker Biography

Gonzalo Mateos was born in Montevideo, Uruguay, in 1982. He received his B.Sc. degree in Electrical Engineering from Universidad de la Republica, Uruguay, in 2005, and the M.Sc. and Ph.D. degrees in Electrical Engineering from the University of Minnesota (UofM), Twin Cities, in 2009 and 2011.From 2004 to 2006, he worked as a Systems Engineer at Asea Brown Boveri (ABB), Uruguay. Currently, he is a visiting scholar with the Computer Science Department at Carnegie Mellon University. He also holds an appointment as a post-doctoral research associate with the Department of Electrical and Computer Engineering (ECE) and the Digital Technology Center, UofM. His research interests lie in the areas of statistical learning from Big Data, network science, wireless communications, and signal processing. His current research focuses on algorithms, analysis, and application of statistical signal processing tools to dynamic network health monitoring, social, power grid, and Big Data analytics. Since 2012, he serves on the Editorial Board of the EURASIP Journal on Advances in Signal Processing. He received the Best Student Paper Award at the 13th IEEE Workshop on Signal Processing Advances in Wireless Communications, 2012 held at Cesme, Turkey, and was also a finalist of the Student Paper Contest at the 14th IEEE DSP Workshop, 2011 held at Sedona, Arizona, USA. His doctoral work has been recognized with the 2013 UofM’s Best Dissertation Award (Honorable Mention) across all Physical Sciences and Engineering areas.

Mar
6
Thu
Second Session Classes: Last day to drop (delete) classes
Mar 6 – Mar 8 all-day
Second Session Classes: Last day to drop (delete) classes
Mar
7
Fri
Graduate Seminar – “Toward Internet-like Energy Systems” @ Warnock (WEB) 1230
Mar 7 @ 10:00 pm – 11:00 pm
Graduate Seminar - "Toward Internet-like Energy Systems" @ Warnock (WEB) 1230

Dr. Masoud Honarvar Nazari, Post Doctoral Fellow

Georgia Institute of Technology

When: Friday, March 7, 2014 at 3:05 p.m.
Where: Warnock 1230

Abstract

In this talk, I will first discuss needs for transforming today’s fossil-fuel dependent and highly polluting electric power systems into sustainable, efficient, and reliable electric energy systems, which have functionalities similar to Internet.

Next, I will present my recent efforts to design a distributed decision-making and control architecture for internet-like energy systems. I will discuss the fundamental differences between internet-like distribution energy systems and conventional transmission power systems, regarding dynamic behavior under a high penetration of distributed generators.

Then, I will present a novel distributed frequency regulation architecture, whereby frequency regulators communicate with their neighbors in the network in order to improve performance. I will show that despite the frequency regulators being distributed, stability can be ensured while avoiding inter-area oscillations using a limited control effort. The efficacy of the proposed frequency regulation framework is shown through simulations on two real-world electric energy systems of different scale and complexity.

Speaker Biography

Masoud Honarvar Nazari is a Post Doctoral Fellow in the School of Electrical and Computer Engineering at Georgia Institute of Technology. He received his first Ph.D. in Electrical and Computer Engineering in a joint program between Carnegie Mellon University and the University of Porto, Portugal in 2012 and obtained his second Ph.D. in Engineering and Public Policy from Carnegie Mellon in the same year. He was a visiting scholar at MIT Energy Initiative in 2010. He was also awarded the five-year international FCT (Fundação para a Ciência e a Tecnologia) fellowship in 2007. His research interests include Power System and Smart Grid operation; Distributed Control Architecture for Internet-like Energy Systems; Large-scale Integration of Distributed Energy Sources, and; Policy implication and regulation design for modernizing Electric Power Systems. He has several book chapters, journals, and conference papers in the subject of Power System Stability and Control.

Mar
8
Sat
Spring break
Mar 8 – Mar 17 all-day
Spring break
Mar
10
Mon
Second Session Classes: Last day to add, elect CR/NC, or audit classes
Mar 10 – Mar 12 all-day
Second Session Classes: Last day to add, elect CR/NC, or audit classes
Mar
14
Fri
Summer 2014 Admission/readmission deadline
Mar 14 – Mar 16 all-day
Summer 2014 Admission/readmission deadline
Mar
17
Mon
Graduate Seminar – “The Telecommunication Network” @ Warnock (WEB) 1230
Mar 17 @ 9:00 pm – 10:00 pm
Graduate Seminar - "The Telecommunication Network" @ Warnock (WEB) 1230

Mr. Tom Armstrong, Chief Technologist for Broadband Communication Systems

Applied Signal Technology – Raytheon Space and Airborne Systems

When: Monday, March 17, 2014 at 3:05 p.m.
Where: Warnock 1230

Abstract

The Global Telecommunication Network touches our lives daily, and many do not appreciate the complexity of the network. This talk introduces fundamental engineering concepts of the network in a simplified view, and shows that the evolution of the core network in meeting today’s communication needs has not changed since the late 1800s.

Speaker Biography

Tom Armstrong is the chief technologist for Broadband Communication Systems in the Applied Signal Technology mission area of Raytheon Space and Airborne Systems. In this role, he provides direction and vision in all technical aspects of signal communications and intelligence product and system development and deployment: aspects including product design, system integration and test, operations and maintenance, and mission management and analysis. He is also a Raytheon Applied Signal Technology Senior Fellow and in such capacity he directs research and development in advanced modulation, high speed switching, error correction, signal multiplexing, communication protocols, and signal processing technologies.

Prior to joining Raytheon Applied Signal Technology in 1999, Armstrong enjoyed a twelve-year career at the U.S. Department of Defense. He served in many technical capacities. In his final position with the DoD, he served as Technical Director of one of the operational divisions where he oversaw all aspects of design, development, and deployment of multiple signal communications systems.

Mr. Armstrong earned his bachelor and master degrees in electrical engineering from the University of Utah in 1986 and 1987, respectively. On two different occasions—in 1997 and again in 2004—he received a Meritorious Citation from the US Government for exceptional achievement and superior performance which contributed significantly to the deployment of a major technical system of national importance.

Mar
23
Sun
Summer 2014 Registration by appointment begins
Mar 23 – Mar 25 all-day
Summer 2014 Registration by appointment begins
Mar
27
Thu
Second Session Classes: Last day to withdraw from classes
Mar 27 – Mar 29 all-day
Second Session Classes: Last day to withdraw from classes
Mar
28
Fri
Defense: D. Wasden
Mar 28 @ 6:00 pm – 8:00 pm

UNIVERSITY OF UTAH
ELECTRICAL AND COMPUTER ENGINEERING DEPARTMENT

DISSERTATION DEFENSE FOR THE DEGREE OF
DOCTOR OF PHILOSOPHY

by

Daryl Wasden
Advisor: Behrouz Farhang

Filter Bank Multicarrier Spread Spectrum Communications

Wireless communications pervade all avenues of modern life. The rapid expansion of wireless services has increased the need for transmission schemes that are more spectrally efficient. Dynamic spectrum access (DSA) systems attempt to address this need by building a network where the spectrum is used opportunistically by all users based on local and regional measurements of its availability. One of the principal requirements in DSA systems is to initialize and maintain a control channel to link the nodes together. This should be done even before a complete spectral usage map is available. Additionally, with more users accessing the spectrum, it is important to maintain a stable link in the presence of significant interference in emergency first-responders, rescue, and defense applications. In this thesis, a new multicarrier spread spectrum (MC-SS) technique based on filter banks is presented. The new technique is called filter bank multicarrier spread spectrum (FB-MC-SS). A detailed theory of the underlying properties of this signal are given, with emphasis on the properties that lend themselves to synchronization at the receiver. Proposed algorithms for synchronization, channel estimation, and detection are implemented on a software-defined radio platform to complete an FB-MC-SS transceiver and to prove the practicality of the technique. FB-MC-SS is shown through physical experimentation to be significantly more robust to partial band interference compared to direct sequence spread spectrum. With a higher power interfering signal occupying 90% of its band, FB-MC-SS maintains a low bit error rate. Under the same interference conditions DS-SS fails completely. This experimentation leads to a theoretical analysis that shows in a frequency selective channel with additive white noise, the FB-MC-SS system has performance that equals that obtained by a DS-SS system employing an optimal rake receiver. This thesis contains a detailed chapter on implementation and design, including lessons learned while prototyping the system. This is to assist future system designers to quickly gain proficiency in further development of this technology.

Friday, March 28, 2014
12:00 p.m.
ECE Conference Room
3235 MEB

The public is invited