Adaptive modulation in multi-user cognitive radio networks over fading channels

Author

Foukalas, Fotis ; Khattab, Tamer ; Poor, H. Vincent

Author_Institution

Electr. Eng., Qatar Univ., Doha, Qatar

fYear

2013

Firstpage

226

Lastpage

230

Abstract

In this paper, the performance of adaptive modulation in multi-user cognitive radio networks over fading channels is analyzed. Multi-user diversity is considered for opportunistic user selection among multiple secondary users. The analysis is obtained for Nakagami-m fading channels. Both adaptive continuous rate and adaptive discrete rate schemes are analysed in opportunistic spectrum access and spectrum sharing. Numerical results are obtained and depicted to quantify the effects of multiuser fading environments on adaptive modulation operating in cognitive radio networks.

Keywords

Nakagami channels; adaptive modulation; cognitive radio; diversity reception; multiuser channels; radio spectrum management; Nakagami-m fading channels; adaptive continuous rate; adaptive discrete rate schemes; adaptive modulation; multiple secondary users; multiuser cognitive radio networks; multiuser diversity; multiuser fading environments; opportunistic spectrum access; opportunistic user selection; spectrum sharing; Adaptive systems; Cognitive radio; Fading; Interference; Modulation; Signal to noise ratio; adaptive modulation; cognitive radio Nakagami-m fading channels; multi-user diversity;

fLanguage

English

Publisher

ieee

Conference_Titel

Cognitive Radio Oriented Wireless Networks (CROWNCOM), 2013 8th International Conference on

Conference_Location

Washington, DC

Type

conf

DOI

10.1109/CROWNCom.2013.6636822

Filename

6636822