Optimal resource allocation for OFDM wiretap channel with cooperative jammer

Author

Zhangju Yu ; Yayan Ma ; Baoyun Wang ; Junxi Zhao

Author_Institution

Coll. of Commun. & Inf. Eng., Nanjing Univ. of Posts & Telecommun., Nanjing, China

fYear

2012

fDate

25-27 Oct. 2012

Firstpage

1

Lastpage

4

Abstract

We consider single-user OFDM wiretap channel with an external cooperative jammer (CJ), where the CJ helps the destination to interfere the eavesdropper. The achievable secrecy rate is derived. The source power and CJ power are optimized over all sub-carriers to maximize the sum secrecy rate under a total system power constraint. The simulation results indicate that the secrecy rate with optimal resource allocation is higher than that of the network without a CJ. It indicates that the network with an external CJ using optimal resource allocation improves the security performance greatly.

Keywords

OFDM modulation; cooperative communication; jamming; resource allocation; telecommunication channels; telecommunication security; CJ power; OFDM wiretap channel; cooperative jammer; eavesdropper; optimal resource allocation; secrecy rate; security performance; single-user OFDM wiretap channel; source power; multi-carrier; resource allocation; secrecy rate; wiretap channel;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications & Signal Processing (WCSP), 2012 International Conference on

Conference_Location

Huangshan

Print_ISBN

978-1-4673-5830-9

Electronic_ISBN

978-1-4673-5829-3

Type

conf

DOI

10.1109/WCSP.2012.6542965

Filename

6542965