Title :
On partially overlapping coexistence for dynamic spectrum access in cognitive radio
Author :
Bedeer, Ebrahim ; Marey, Mohamed ; Dobre, Octavia ; Baddour, Kareem
Author_Institution :
Fac. of Eng. & Appl. Sci., Memorial Univ. of Newfoundland, St. John´´s, NL, Canada
Abstract :
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.
Keywords :
OFDM modulation; channel spacing; cognitive radio; error statistics; BER; OFDM; cognitive radio; dynamic spectrum access; minimum frequency separation; orthogonal frequency division multiplexing; out-of-band radiations; overlapping coexistence; AWGN channels; Bit error rate; Copper; Interference; Niobium; Peak to average power ratio;
Conference_Titel :
Computer Aided Modeling and Design of Communication Links and Networks (CAMAD), 2011 IEEE 16th International Workshop on
Conference_Location :
Kyoto
Print_ISBN :
978-1-61284-281-3
Electronic_ISBN :
978-1-61284-280-6
DOI :
10.1109/CAMAD.2011.5941104
