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On partially overlapping coexistence for dynamic spectrum access in cognitive radio

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4 Author(s)
Ebrahim Bedeer ; Faculty of Engineering and Applied Science, Memorial University of Newfoundland, St. John's, Canada ; Mohamed Marey ; Octavia Dobre ; Kareem Baddour

In this paper, we study partially overlapping coexistence scenarios in cognitive radio environment. We consider an Orthogonal Frequency Division Multiplexing (OFDM) cognitive system coexisting with a narrow-band (NB) and an OFDM primary system, respectively. We focus on finding the minimum frequency separation between the coexisting systems to meet a certain target BER. Windowing and nulling are used as simple techniques to reduce the OFDM out-of-band radiations, and, hence decrease the separation. The effect of these techniques on the OFDM spectral efficiency and PAPR is also studied.

Published in:

2011 IEEE 16th International Workshop on Computer Aided Modeling and Design of Communication Links and Networks (CAMAD)

Date of Conference:

10-11 June 2011