Cognitive relay networks with underlay spectrum sharing and channel estimation error: Interference probability and BER analysis

Author

Khuong Ho-Van

Author_Institution

Dept. of Telecommun. Eng., HoChi-Minh City Univ. of Technol., Ho Chi Minh City, Vietnam

Volume

16

Issue

3

fYear

2014

fDate

41791

Firstpage

301

Lastpage

304

Abstract

This paper proposes accurate interference probability and bit error rate formulas for cognitive relay networks with underlay spectrum sharing and channel estimation error (CEE). Numerous results reveal that the CEE not only degrades the performance of secondary systems (SSs) but also increases interference power caused by SSs to primary systems (PSs), eventually unfavorable to both systems. A solution to further protect PSs from this effect through reducing the power of secondary transmitters is investigated and analyzed.

Keywords

channel estimation; cognitive radio; error statistics; probability; radio spectrum management; radiofrequency interference; relay networks (telecommunication); BER analysis; CEE; PSs; SSs; bit error rate formulas; channel estimation error; cognitive relay networks; interference power; interference probability; primary systems; secondary system performance; secondary transmitters; underlay spectrum sharing; Analytical models; Bit error rate; Channel estimation; Fading channels; IP networks; Interference; Relay networks (telecommunications); Bit error rate (BER); channel estimation error (CEE); cognitive radio; interference probability (IP); relaying; underlay spectrum sharing (USS);

fLanguage

English

Journal_Title

Communications and Networks, Journal of

Publisher

ieee

ISSN

1229-2370

Type

jour

DOI

10.1109/JCN.2014.000050

Filename

6856628