Wireless security in selection decode-and-forward relay networks

In this paper, a confidential communication scenario is considered through selection decode-and-forward cooperative relay networks over Rayleigh fading channel in which a source communicates with a destination via multiple relays. A best relay is selected using selection combining technique which communicates with the destination. An eavesdropper observes their communication and tries to decode confidential information. In this situation, an interest is given to ensure secure communication between the best relay and the destination so that eavesdropper is unable to decode any information from the main channel (i.e. channel between relay and destination). The performance of the proposed model is analyzed based on the closed-form analytical expressions of the ergodic secrecy capacity and the secure outage probability taking into account the distances of relays from the source, destination and the eavesdropper. Analytical results show that the additional diversity provided by the best relay situated in a strategic location significantly improves the secure outage performance of the selection decode-and-forward relay networks.

[1]  Raef Bassily,et al.  Secure communication in multiple relay networks through decode-and-forward strategies , 2012, Journal of Communications and Networks.

[2]  Martin Haenggi.  On routing in random Rayleigh fading networks , 2005, IEEE Transactions on Wireless Communications.

[3]  Trung Quang Duong,et al.  On the performance of selection decode-and-forward relay networks over Nakagami-m fading channels , 2009, IEEE Communications Letters.

[4]  Joseph Lipka,et al.  A Table of Integrals , 2010 .

[5]  M. Z. I. Sarkar,et al.  Security in cooperative spatial multiplexing system with zero-forcing filtering , 2015, 2015 2nd International Conference on Electrical Information and Communication Technologies (EICT).

[6]  Pingzhi Fan,et al.  Secure multiuser communications in multiple decode-and-forward relay networks with direct links , 2014, 2014 IEEE Global Communications Conference.

[7]  Tran Trung Duy,et al.  Relay Selection for Security Enhancement in Cognitive Relay Networks , 2015, IEEE Wireless Communications Letters.

[8]  Kerstin Vogler,et al.  Table Of Integrals Series And Products , 2016 .

[9]  Zhu Han,et al.  Energy Efficient Secure Communication Over Decode-and-Forward Relay Channels , 2015, IEEE Transactions on Communications.

[10]  Adrish Banerjee,et al.  Asymptotic outage analysis of incremental decode and forward cognitive radio relay network , 2015, 2015 7th International Conference on Communication Systems and Networks (COMSNETS).