Ergodic Capacity for TAS/MRC Spectrum Sharing Cognitive Radio

Author

Blagojevic, Vesna ; Ivanis, Predrag

Author_Institution

Fac. of Electr. Eng., Univ. of Belgrade, Belgrade, Serbia

Volume

16

Issue

3

fYear

2012

fDate

3/1/2012 12:00:00 AM

Firstpage

321

Lastpage

323

Abstract

Spectrum sharing cognitive radio with transmit antenna selection and maximal ratio combining is analyzed, under the peak interference constraint at the primary user receiver. The ergodic capacity of the secondary link with an arbitrary number of transmit and receive antennas is derived, for the case of Rayleigh fading and transmit power constraint. For the case of unlimited transmit power, the closed-form expression for the capacity is derived. The correctness of analytical results is verified by using an independent simulation model.

Keywords

Rayleigh channels; cognitive radio; radiofrequency interference; receiving antennas; Rayleigh fading; TAS-MRC spectrum sharing cognitive radio; antenna selection; closed-form expression; ergodic capacity; independent simulation model; interference constraint; maximal ratio combining; power constraint; primary user receiver; Cognitive radio; Diversity reception; Fading; Interference; Receiving antennas; Transmitting antennas; Ergodic capacity; Rayleigh fading; maximal ratio combining; spectrum sharing; transmit antenna selection;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2012.011312.111488

Filename

6134707