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

fYear

2011

fDate

10-11 June 2011

Firstpage

143

Lastpage

147

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/CAMAD.2011.5941104

Filename

5941104