Performance limits on ranging with cognitive radio
Author
Dardari, D.
Karisan, Yasir
Gezici, Sinan
D'Amico, A. A.
Mengali, U.
Date
2009-06Source Title
Proceedings - 2009 IEEE International Conference on Communications Workshops, ICC 2009
Publisher
IEEE
Pages
[1] - [5]
Language
English
Type
Conference PaperItem Usage Stats
154
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104
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Abstract
Cognitive radio is a promising paradigm for efficient utilization of the radio spectrum due to its capability to sense environmental conditions and adapt its communication and localization features. In this paper, the theoretical limits on time-of-arrival estimation for cognitive radio localization systems are derived in the presence of interference. In addition, an optimal spectrum allocation strategy which provides the best ranging accuracy limits is proposed. The strategy accounts for the constraints from the sensed interference level as well as from the regulatory emission mask. Numerical results are presented to illustrate the improvements that can be achieved by the proposed approach. © 2009 IEEE.
Keywords
Cognitive radioInterference
Orthogonal frequency division multiplexing (OFDM)
Ranging
Time-of-arrival (TOA) estimation
Ultra-wideband (UWB)
Cognitive systems
Estimation
Evolutionary algorithms
Frequency allocation
Frequency division multiple access
Frequency estimation
Multiplexing
Radio
Radio systems
Technical presentations
Wireless telecommunication systems