Paper Info
Title
Optimal secrecy capacity of underlay cognitive radio networks with multiple relays.
Abstract
In this paper, we study the secrecy capacity of an underlay cooperative cognitive radio network (CCRN) where multiple relays are deployed to assist the secondary transmission. An optimal power allocation algorithm is proposed for the secondary transmitter and secondary relays to obtain the maximum secrecy capacity while satisfy the interference power constraint at the primary receiver and the transmit power budget of the CCRN. Since the optimization problem for the secrecy capacity is non-convex, we utilize an approximation and fitting method to convert the optimization problem into a geometric programming problem which then is solved by applying the Logarithmic barrier function. Numerical results are provided to study the effect of network parameters on the secrecy capacity. Through the numerical results, the advantage of the proposed power allocation algorithm compared to equal power allocation can also be observed.
Year
Venue
Field
2016
IEEE Military Communications Conference
Transmitter,Mathematical optimization,Transmitter power output,Computer science,Secrecy,Communications system,Computer network,Electronic engineering,Underlay,Geometric programming,Optimization problem,Cognitive radio
DocType
ISSN
Citations 
Conference
2155-7578
0
PageRank 
References 
Authors
0.34
0
3
Name
Order
Citations
PageRank
Thi My Chinh Chu16614.36
Hans-Jürgen Zepernick254051.24
Hoc Phan300.34