Maximal Ratio Diversity Combining Enhanced Security

In this paper, we present a method of utilizing channel diversity to increase secrecy capacity in wireless communication. With the presence of channel diversity, an intended receiver can achieve a relatively high secrecy capacity even at low SNRs. We present a theoretical analysis on the outage probability at a normalized target secrecy capacity in Rayleigh fading environment. Our numerical results strongly support our conclusion that maximal ratio combining of channel diversity can enhance the security of the wireless communication system in normal operating scenarios.

[1]  Hesham El Gamal,et al.  On the Secrecy Capacity of Fading Channels , 2007, ISIT.

[2]  Upena Dalal,et al.  Wireless Communication , 2010 .

[3]  A. D. Wyner,et al.  The wire-tap channel , 1975, The Bell System Technical Journal.

[4]  Claude E. Shannon,et al.  Communication theory of secrecy systems , 1949, Bell Syst. Tech. J..

[5]  Hesham El Gamal,et al.  Cooperative Secrecy: The Relay-Eavesdropper Channel , 2007, 2007 IEEE International Symposium on Information Theory.

[6]  Gregory W. Wornell,et al.  The MIMOME Channel , 2007, ArXiv.

[7]  Shlomo Shamai,et al.  A Note on the Secrecy Capacity of the Multiple-Antenna Wiretap Channel , 2007, IEEE Transactions on Information Theory.

[8]  Frédérique E. Oggier,et al.  The secrecy capacity of the MIMO wiretap channel , 2008, ISIT.

[9]  Seung-Jun Yu,et al.  Wireless Communication , 1916, Nature.

[10]  Martin E. Hellman,et al.  The Gaussian wire-tap channel , 1978, IEEE Trans. Inf. Theory.

[11]  Zhu Han,et al.  Secure wireless communications via cooperation , 2008, 2008 46th Annual Allerton Conference on Communication, Control, and Computing.

[12]  M. Yuksel,et al.  Secure Communication with a Relay Helping the Wire-tapper , 2007, 2007 IEEE Information Theory Workshop.

[13]  Shlomo Shamai,et al.  Secure Communication Over Fading Channels , 2007, IEEE Transactions on Information Theory.

[14]  Matthieu R. Bloch,et al.  Wireless Information-Theoretic Security , 2008, IEEE Transactions on Information Theory.

[15]  Yasutada Oohama,et al.  Coding for relay channels with confidential messages , 2001, Proceedings 2001 IEEE Information Theory Workshop (Cat. No.01EX494).