Resource Allocation and Outage Analysis for an Adaptive Cognitive Two-Way Relay Network

In this paper, an adaptive two-way relay cooperation scheme is studied for multiple-relay cognitive radio networks to improve the performance of secondary transmissions. The power allocation and relay selection schemes are derived to minimize the secondary outage probability where only statistical channel information is needed. Exact closed-form expressions for secondary outage probability are derived under a constraint on the quality of service of primary transmissions in terms of the required primary outage probability. To better understand the impact of primary user interference on secondary transmissions, we further investigate the asymptotic behaviors of the secondary relay network, including power allocation and outage probability, when the primary signal-to-noise ratio goes to infinity. Simulation results are provided to illustrate the performance of the proposed schemes.

[1]  P. Ubaidulla,et al.  Optimal Relay Selection and Power Allocation for Cognitive Two-Way Relaying Networks , 2012, IEEE Wireless Communications Letters.

[2]  Yang Han,et al.  Performance bounds for two-way amplify-and-forward relaying , 2009, IEEE Transactions on Wireless Communications.

[3]  Luxi Yang,et al.  An Asymptotically Optimal Cooperative Relay Scheme for Two-Way Relaying Protocol , 2010, IEEE Signal Processing Letters.

[4]  Patrick Mitran,et al.  Achievable Rate Regions and Performance Comparison of Half Duplex Bi-Directional Relaying Protocols , 2011, IEEE Transactions on Information Theory.

[5]  Mohamed-Slim Alouini,et al.  Performance Bounds for Two-Way Amplify-and-Forward Relaying Based on Relay Path Selection , 2009, VTC Spring 2009 - IEEE 69th Vehicular Technology Conference.

[6]  Mohamed-Slim Alouini,et al.  Relay Selection and Resource Allocation for Two-Way DF-AF Cognitive Radio Networks , 2013, IEEE Wireless Communications Letters.

[7]  Mohammad Ali Khojastepour,et al.  Outage minimization and optimal power control for the fading relay channel , 2004, Information Theory Workshop.

[8]  Shuguang Cui,et al.  Optimal Power Allocation for Outage Probability Minimization in Fading Channels with Energy Harvesting Constraints , 2012, IEEE Transactions on Wireless Communications.

[9]  Yindi Jing,et al.  A relay selection scheme for two-way amplify-and-forward relay networks , 2009, 2009 International Conference on Wireless Communications & Signal Processing.

[10]  Aria Nosratinia,et al.  Outage analysis of coded cooperation , 2006, IEEE Transactions on Information Theory.

[11]  Armin Wittneben,et al.  Spectral efficient protocols for half-duplex fading relay channels , 2007, IEEE Journal on Selected Areas in Communications.

[12]  Simon Haykin,et al.  Cognitive radio: brain-empowered wireless communications , 2005, IEEE Journal on Selected Areas in Communications.

[13]  Mohamed-Slim Alouini,et al.  Optimal Transmit Power Allocation for MIMO Two-Way Cognitive Relay Networks with Multiple Relays using AF Strategy , 2014, IEEE Wireless Communications Letters.

[14]  Hyungsik Ju,et al.  Catching resource-devouring worms in next-generation wireless relay systems: Two-way relay and full-duplex relay , 2009, IEEE Communications Magazine.

[15]  Yindi Jing,et al.  Joint Relay Selection and Power Allocation for Two-Way Relay Networks , 2011, IEEE Signal Processing Letters.

[16]  Ioannis Krikidis.  Relay Selection for Two-Way Relay Channels With MABC DF: A Diversity Perspective , 2010, IEEE Transactions on Vehicular Technology.

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

[18]  Xianbin Wang,et al.  Optimal Relay Selection for Physical-Layer Security in Cooperative Wireless Networks , 2013, IEEE Journal on Selected Areas in Communications.

[19]  Xing Zhang,et al.  Exact Outage Analysis in Cognitive Two-Way Relay Networks With Opportunistic Relay Selection Under Primary User's Interference , 2015, IEEE Transactions on Vehicular Technology.

[20]  Pramod K. Varshney,et al.  Optimum Power Randomization for the Minimization of Outage Probability , 2013, IEEE Transactions on Wireless Communications.

[21]  Patrick Mitran,et al.  Achievable rate regions for bi-directional relaying , 2008, ArXiv.

[22]  Yindi Jing,et al.  Distributed Space-Time Coding in Wireless Relay Networks , 2006, IEEE Transactions on Wireless Communications.

[23]  Gregory W. Wornell,et al.  Cooperative diversity in wireless networks: Efficient protocols and outage behavior , 2004, IEEE Transactions on Information Theory.

[24]  RankovBoris,et al.  Spectral efficient protocols for half-duplex fading relay channels , 2007 .

[25]  Yu-Dong Yao,et al.  An Adaptive Cooperation Diversity Scheme With Best-Relay Selection in Cognitive Radio Networks , 2010, IEEE Transactions on Signal Processing.

[26]  Shi Jin,et al.  Outage Performance for Decode-and-Forward Two-Way Relay Network with Multiple Interferers and Noisy Relay , 2013, IEEE Transactions on Communications.