Wideband Compressive Sensing: From Theory to VLSI Circuits
Feb 11, 2013
from 01:00 PM to 02:00 PM
|Where||Engr. IV Bldg., Shannon Room 54-134|
|Contact Name||Prof. Abeer Alwan|
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Compressive sensing (CS) is an emerging technology that enables sampling and reconstruction of sparse signals well below the Shannon-Nyquist rate. While the theoretical aspects of CS have gained significant attention in the research community, not much is known about its efficacy for very-large-scale integration (VLSI) circuits. In this talk, I will describe the design and implementation of a wideband analog-to-information (A2I) converter in 28nm CMOS technology. The proposed A2I converter acquires wideband communication signals that are sparse in the frequency domain by means of a low-complexity, low-rate random subsampling analog-to-digital converter. A high-performance digital recovery unit then reconstructs the sparse spectral information via convex optimization. Based on this design, I will showcase the importance of jointly considering theory, algorithm, and VLSI design aspects, as well as discuss the pros and cons of CS for A2I converters.
Christoph Studer received his MS and PhD degrees in Information Technology and Electrical Engineering from ETH Zurich, in 2005 and 2009, respectively. In 2005, he was a Visiting Researcher with the Smart Antennas Research Group, Stanford University. From 2006 to 2009, he was a Research Assistant jointly at the Integrated Systems Laboratory and the Communication Technology Laboratory (CTL), ETH Zurich. From 2009 to 2012, Dr. Studer was a Postdoctoral Researcher at CTL, ETH Zurich, and the Department of Electrical and Computer Engineering, Rice University. Since 2013, he is a Research Scientist at Rice University. Dr. Studer’s research interests include the design of digital VLSI circuits and systems, signal and image processing, and wireless communication. Dr. Studer was the recipient of an ETH Medal in 2005 and 2011 for his MS and PhD Thesis, respectively. He has received Best Student Paper Awards at the 2007 Asilomar Conference on Signals, Systems, and Computers and the 2008 IEEE International Symposium on Circuits and Systems, and received the 2010 Swisscom/ICTnet Innovations Award. In 2011, Dr. Studer was awarded a two-year fellowship for Advanced Researchers by the Swiss National Science Foundation (SNSF).