Performance limits on ranging with cognitive radio
D'Amico, A. A.
Proceedings - 2009 IEEE International Conference on Communications Workshops, ICC 2009
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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.
Orthogonal frequency division multiplexing (OFDM)
Time-of-arrival (TOA) estimation
Frequency division multiple access
Wireless telecommunication systems