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Optimal adaptive bit loading and subcarrier allocation techniques for OFDM based cognitive radio systems

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3 Author(s)
Tang, J. ; Dept. of Electron. & Electr. Eng., Loughborough Univ., Loughborough, UK ; Rahulamathavan, Y. ; Lambotharan, S.

We propose an integer linear programming based adaptive bit loading and subcarrier allocation technique for a cognitive radio network. The proposed technique considers interference leakage to and from multiple primary users and secondary users in order to optimise the throughput of the secondary network while keeping the interference to primary network below a specific value. The simulation framework explicitly considers baseband filter response of the primary network and its impact on the interference leakage to the secondary network.

Published in:

Communication Technology (ICCT), 2010 12th IEEE International Conference on

Date of Conference:

11-14 Nov. 2010