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Prof. Richard Moore introduced me to FM-CW radars on my first day at the University of Kansas as a graduate student in 1979 and asked me to put together a radar using laboratory test equipment. I put it together, but it did not provide the results we wanted for detecting buried pipes. This was mainly because of the lack of suitable inexpensive RF and digital technologies at that time. Prof. Moore...
Content addressable memory is a novel storage device that can save data in its cells, which could be read, written and searched on the basis of their contents. This paper presents Memristor content addressable memory (M-CAM) structures that are formed of M-CAM cells, which compare searched data and stored data then give a cell output signal to be kept in its comparator. After the comparison in each...
In this paper, we present simulation and experimental studies of localization and source separation for a bio-complexity bird study based on a new wireless acoustic array node named Voxnet. The Approximate Maximum Likelihood (AML) method is used to estimate blindly the direction-of-arrivals (DOAs) of sources which can be used to both locate the sources using a DOA-based localization method and generate...
Satellite and terrestrial (wireless) communication systems require high functionality (i.e., direction finding, beam steering, reconfigurability, frequency agility, and broadband) to address multiservice, multiband, and multistandard operation in a confined small volume. Although there are existing technologies with such functionality, the associated devices are large and heavy, and often limited...
Recently, there has been increasing interest in extending relational query processing to efficiently support extraction operators, such as dictionaries and regular expressions, over text data. Many text processing queries are sophisticated in that they involve multiple extraction and join operators, resulting in many possible query plans. However, there has been little research on building the selectivity...
Time-reversed electromagnetic wave has the property of spatial super-resolution focusing in far-field circumstances. This paper provides a novel method to design compact multi-antenna for wireless communication system using time reversal super-resolution property. A new type of planar microstructured antennas with the super-resolution of 1/15 wavelength is constructed and simulated with the aid of...
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