Cooperative ARQ protocols for underlay cognitive radio networks

Author

Touati, Samy ; Boujemaa, Hatem ; Abed, Nagy

Author_Institution

King Saud Univ., Riyadh, Saudi Arabia

fYear

2013

fDate

9-13 Sept. 2013

Firstpage

1

Lastpage

5

Abstract

In this paper, we derive the throughput of cooperative Automatic Repeat reQuest protocols for underlay cognitive radio networks. Three relay selection techniques are investigated: Opportunistic Amplify and Forward (O-AF), Partial Relay Selection AF (PRS-AF) and Opportunistic Decode and Forward (O-DF). In O-AF, the selected relay should offer the highest SNR of the relaying link (S-R-D) and verify some interference constraint. In PRS-AF, the selected relay offers the highest SNR of the first hop (S-R) and verify the interference constraint. In O-DF, the selected relay should have correctly decoded the packet, verify the interference constraint and offer the highest SNR of the second hop. Theoretical curves are validated using simulation results for different number of relays and interference threshold.

Keywords

amplify and forward communication; automatic repeat request; cognitive radio; cooperative communication; decode and forward communication; probability; protocols; radiofrequency interference; relay networks (telecommunication); O-AF selection technique; O-DF selection technique; PRS-AF selection technique; SNR; cooperative ARQ protocols; cooperative automatic repeat request protocols; interference constraint; interference threshold; opportunistic amplify and forward; opportunistic decode and forward selection technique; partial relay selection AF selection technique; relay selection techniques; relaying link; theoretical curves; underlay cognitive radio networks; Automatic repeat request; Cognitive radio; Interference constraints; Protocols; Relays; Signal to noise ratio; Automatic Repeat reQuest (ARQ); Cognitive radio networks; cooperative communications;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Conference (EUSIPCO), 2013 Proceedings of the 21st European

Conference_Location

Marrakech

Type

conf

Filename

6811570