Capacity-Maximization Threshold Design for Wideband Sensing with Guaranteed Minimum Primary-User Rate

Author

Jia, Peng ; LE-NGOC, THO

Author_Institution

Dept. of Electr. & Comput. Eng., McGill Univ., Montreal, QC, Canada

fYear

2011

fDate

5-8 Sept. 2011

Firstpage

1

Lastpage

5

Abstract

We investigate the design of optimal threshold for energy detection of primary-user (PU) beacon signals in spectrum sensing. The weighted sum of the PU and secondary-user (SU) link rates is used as the objective function with constraint on the guaranteed minimum PU link rate. SU with wideband sensing capability selects the idle frequency-slot with the lowest sensed power to be the candidate to access. Numerical results show that the wideband sensing capability with the proposed optimal threshold and accessing strategy can help the SU to meet the stringent PU rate constraints while achieving much higher SU link rate and network capacity.

Keywords

broadband networks; channel capacity; cognitive radio; radio spectrum management; signal detection; beacon signal detection; capacity maximization threshold design; energy detection; idle frequency slot; network capacity; objective function; wideband spectrum sensing; FCC; Interference; Numerical models; Receivers; Sensors; Transmitters; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference (VTC Fall), 2011 IEEE

Conference_Location

San Francisco, CA

ISSN

1090-3038

Print_ISBN

978-1-4244-8328-0

Type

conf

DOI

10.1109/VETECF.2011.6093088

Filename

6093088