Enabling dynamic spectrum access for cognitive radio using software defined radio platform

Author

Rashid, Rozeha A. ; Sarijari, M. Adib ; Fisal, N. ; Yusof, S.K.S. ; Ariffin, S.H.S.

Author_Institution

Fac. of Electr. Eng., Univ. Teknol. Malaysia, Skudai, Malaysia

fYear

2011

fDate

25-28 Sept. 2011

Firstpage

180

Lastpage

185

Abstract

This Spectrum occupancy measurement in many countries shows sporadic and poorly utilized licensed radio spectrum due to the outdated exclusive spectrum access policy. Dynamic Spectrum Access (DSA) technique allows cognitive (unlicensed) user (CU) to opportunistically transmit in a primary (licensed) user (PU) frequency band for a given time if it does not detect any ongoing operations. In this work, DSA is realized using cognitive radio (CR) technology due to its features of able to sense, learn, adapt and react according to the environment. The proposed design of the DSA based CR system consists of four main functional blocks: spectrum sensing, spectrum management, spectrum decision and data transmission. The implementation is done using GNU Radio and Universal Software Radio Peripheral (USRP) Software Defined Radio (SDR) platform. The result shows a significant improvement in term of Packet Reception Rate (PRR) in DSA based CR systems compared to the system without DSA capability.

Keywords

cognitive radio; software radio; GNU radio; cognitive radio; cognitive user; data transmission; dynamic spectrum access; packet reception rate; primary user; radio spectrum; software defined radio; spectrum access policy; spectrum decision; spectrum management; spectrum occupancy measurement; spectrum sensing; universal software radio peripheral; Copper; Data communication; Radio spectrum management; Resource management; Sensors; Software radio; Synchronization; Cognitive Radio; Dynamic Spectrum Access; GNU Radio; Software Defined Radio; USRP; spectrum management and spectrum decision; spectrum sensing;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Technology and Applications (ISWTA), 2011 IEEE Symposium on

Conference_Location

Langkawi

Print_ISBN

978-1-4577-1496-2

Type

conf

DOI

10.1109/ISWTA.2011.6089404

Filename

6089404