In this paper, a novel approach based on non-negative matrix factorization is applied for joint spectrum sensing and primary user localization in cognitive radio networks. This approach is robust and tolerant to spars...
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We propose a prototype system for wireless tomographic imaging using commercially available software defined radio systems. The proposed architecture utilizes USRP2 systems as sensor nodes. The USRP2 system is evaluat...
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We propose a prototype system for wireless tomographic imaging using commercially available software defined radio systems. The proposed architecture utilizes USRP2 systems as sensor nodes. The USRP2 system is evaluated as a means of accurately measuring attenuation for use in self-coherent tomography. The potential error and its impact on the accuracy of our proposed system is explored.
The AAAI-11 workshop program was held Sunday and Monday, August 7-18, 2011, at the Hyatt Regency San Francisco in San Francisco, California USA. The AAAI-11 workshop program included 15 workshops covering a wide range...
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To support our ongoing work in modeling bat echolocation, an artificial bat head was designed and fabricated using a 3D printer, an ultrasonic cochlea-like filter bank with 16 channels was designed with moderate quali...
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To support our ongoing work in modeling bat echolocation, an artificial bat head was designed and fabricated using a 3D printer, an ultrasonic cochlea-like filter bank with 16 channels was designed with moderate quality (Q) factor, and 128 spiking neurons convert these signals to spike trains. A two-dimensional address-event arbiter is used to transmit these spikes off of the chip. We demonstrate that the population of spiking neurons can be decoded to estimate azimuth and elevation of ultrasonic chirps. This chip was fabricated in a commercially-available 0.5(mu)m CMOS process and consumes approximately 36(mu)W.
XML has proven itself as a versatile technology, and is currently being utilized on almost every platform, and in every area of software development. This tutorial will give an introduction to XML and related technolo...
XML has proven itself as a versatile technology, and is currently being utilized on almost every platform, and in every area of software development. This tutorial will give an introduction to XML and related technologies such as XSLT, DTDs and DOM. After completing this hands-on tutorial, you should have the basic concepts and resources to explore the possibility of integrating XML in your curriculum.
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