Optimal Sensing Cardinality for Cognitive Radios

Author

Thang Van Nguyen ; Shin, Hyundong ; Win, Moe Z.

Author_Institution

Dept. of Electron. & Radio Eng., Kyung Hee Univ., Yongin, South Korea

Volume

15

Issue

7

fYear

2011

fDate

7/1/2011 12:00:00 AM

Firstpage

716

Lastpage

718

Abstract

This letter puts forth a proactive approach for determining the sensing cardinality (the number of subchannels to sense) in a multiband cognitive radio network with limited available block energy. Specifically, we present the sensing cardinality that maximizes the achievable block rate of the cognitive user by optimally allocating available energy to the wideband spectrum sensing and data transmission. We further derive the closed-form expression for this optimal sensing cardinality when each subchannel has the identical primary spectrum occupancy statistics.

Keywords

broadband networks; cognitive radio; data communication; radio spectrum management; statistical analysis; block energy; block rate; closed-form expression; cognitive radios; cognitive user; data transmission; identical primary spectrum occupancy statistics; multiband cognitive radio network; optimal sensing cardinality; wideband spectrum sensing; Antennas; Cognitive radio; Data communication; MIMO; Sensors; Wideband; Wireless sensor networks; Cognitive radio; opportunistic spectrum access; sensing cardinality;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

Conference_Location

5/23/2011 12:00:00 AM

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2011.051011.110513

Filename

5771955