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Distributed iterative time slot allocation for spectrum sensing information sharing in cognitive radio ad hoc networks

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3 Author(s)
Lunden, J. ; Dept. of Signal Process. & Acoust., Aalto Univ., Espoo, Finland ; Motani, M. ; Poor, V.

In this paper, distributed iterative time slot allocation algorithms for spectrum sensing information (SSI) sharing in cognitive radio ad hoc networks are proposed. The proposed algorithms are based on a collision detection and acknowledgment scheme, which allows nodes to receive knowledge about collisions with their two-hop neighbors. The nodes use this information to update their operating time slots using a probabilistic approach, i.e., each node maintains a parameter representing the probability of switching the time slot in case of a collision. Both fixed and adaptive probability based schemes are proposed. Simulation results show the rapid convergence and excellent performance of the proposed time slot allocation algorithms.

Published in:

Wireless Communications and Networking Conference (WCNC), 2013 IEEE

Date of Conference:

7-10 April 2013