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Correction published on 31 August 2009, see Sensors 2009, 9(9), 6835.

Sensors 2009, 9(8), 6530-6603; doi:10.3390/s90806530
Article

A Unified Multi-Functional Dynamic Spectrum Access Framework: Tutorial, Theory and Multi-GHz Wideband Testbed

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1 Department of Electrical and Computer Engineering, Center for Manufacturing Research, Tennessee Technological University, Cookeville, TN 38505, USA 2 Department of Electrical Engineering and Computer Science, The University of Tennessee Knoxville, TN 37996-2100, USA 3 Department of Electrical Engineering,Wright State University, 3640 Colonel Glenn Highway, Dayton, OH 45435-0001, USA
* Author to whom correspondence should be addressed.
Received: 20 April 2009 / Revised: 14 July 2009 / Accepted: 4 August 2009 / Published: 21 August 2009
(This article belongs to the Special Issue Wireless Sensor Technologies and Applications)

Abstract

Dynamic spectrum access is a must-have ingredient for future sensors that are ideally cognitive. The goal of this paper is a tutorial treatment of wideband cognitive radio and radar—a convergence of (1) algorithms survey, (2) hardware platforms survey, (3) challenges for multi-function (radar/communications) multi-GHz front end, (4) compressed sensing for multi-GHz waveforms—revolutionary A/D, (5) machine learning for cognitive radio/radar, (6) quickest detection, and (7) overlay/underlay cognitive radio waveforms. One focus of this paper is to address the multi-GHz front end, which is the challenge for the next-generation cognitive sensors. The unifying theme of this paper is to spell out the convergence for cognitive radio, radar, and anti-jamming. Moore’s law drives the system functions into digital parts.From a system viewpoint, this paper gives the first comprehensive treatment for the functions and the challenges of this multi-function (wideband) system. This paper brings together the inter-disciplinary knowledge.
Keywords: cognitive radio; testbed; cognitive radar cognitive radio; testbed; cognitive radar
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Qiu, R.; Guo, N.; Li, H.; Wu, Z.; Chakravarthy, V.; Song, Y.; Hu, Z.; Zhang, P.; Chen, Z. A Unified Multi-Functional Dynamic Spectrum Access Framework: Tutorial, Theory and Multi-GHz Wideband Testbed. Sensors 2009, 9, 6530-6603.

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