Stability analysis and adaptive power allocation in cooperative diversity Cognitive Radio networks

Author

Jun, Li ; Bo, He ; Fei, Lin ; Hong-fa, Chu ; Meng, Hou

Author_Institution

Sch. of Electron. Inf. & Control Eng., Shandong Polytech. Univ., Ji´´nan, China

fYear

2011

fDate

21-23 June 2011

Firstpage

825

Lastpage

829

Abstract

This paper studied the performance gain of Amplify-and-Forward (AF) cooperation technology in asymmetry Cognitive Radio (CR) interference communication systems. The main contributions are the derivation of the closed-form math expressions of outage and the throughput for Licensed and Cognitive Users in cognitive cooperative communication systems under flat Rayleigh fading channel. Under the condition of ” transparent” from Cognitive User (CU) to Licensed User (LU) and random LU package arrivals, the paper analyzed the power allocation algorithm and the throughput for the CU and derived the Adaptive Power Allocation (APA) algorithm for cognitive cooperative communication systems. Simulation verified the theory analyses and the numerical results show that the cooperation technology improves the overall system performance for both Licensed and Cognitive Users.

Keywords

Rayleigh channels; amplify and forward communication; cognitive radio; cooperative communication; diversity reception; radiofrequency interference; stability; APA algorithm; adaptive power allocation algorithm; amplify-and-forward cooperation technology; asymmetry cognitive radio interference communication systems; cognitive cooperative communication systems; cognitive users; cooperative diversity cognitive radio networks; flat Rayleigh fading channel; licensed users; random LU package arrivals; stability analysis; Communication systems; Copper; Interference; Relays; Signal to noise ratio; Stability analysis; Throughput; Adaptive Power Allocation(APA); Cognitive Radio (CR); Cooperative Communications; Outage; Throughput;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics and Applications (ICIEA), 2011 6th IEEE Conference on

Conference_Location

Beijing

ISSN

pending

Print_ISBN

978-1-4244-8754-7

Electronic_ISBN

pending

Type

conf

DOI

10.1109/ICIEA.2011.5975700

Filename

5975700