Maximized Channel Capacity Based Power Allocation Technique for Multi Relay Hybrid Decode-Amplify-Forward Cooperative Network

AbstractIn this paper, a novel maximized channel capacity based power allocation using differential evolution (DE) algorithm for multi relay Hybrid Decode-Amplify-Forward cooperative network in a Rayleigh fading environment is proposed. The closed form expression for average channel capacity with the tight approximation is derived. The proposed parametric optimization problem is defined on basis of the decoding capability of the relay. Further, the relay powers are optimized using the optimized power allocation factor. The performance of the proposed technique is validated for different channel variances and for different relay locations. From the simulation analysis, it is observed that the proposed DE based power allocation scheme performs better than the existing equal power allocation scheme.

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

[2]  Trung Quang Duong,et al.  Hybrid Decode-Amplify-Forward Cooperative Communications with Multiple Relays , 2009, 2009 IEEE Wireless Communications and Networking Conference.

[3]  Oluwatobi Olabiyi,et al.  Ergodic capacity analysis of cooperative amplify-and-forward relay networks over generalized fading channels , 2015, Wirel. Commun. Mob. Comput..

[4]  Trung Quang Duong,et al.  On the Performance Gain of Hybrid Decode-Amplify-Forward Cooperative Communications , 2009, EURASIP J. Wirel. Commun. Netw..

[5]  Tran Trung Duy,et al.  Performance analysis of hybrid decode-amplify-forward incremental relaying cooperative diversity protocol using SNR-based relay selection , 2012, Journal of Communications and Networks.

[6]  A. Olfat,et al.  Performance of hybrid decode-amplify-forward protocol for multiple relay networks over independent and non-identical flat fading channels , 2011, IET Commun..

[7]  Tao Jiang,et al.  Quasi-optimal power allocation based on ergodic capacity for wireless relay networks , 2013, Wirel. Commun. Mob. Comput..

[8]  K. J. Ray Liu,et al.  Cooperative Communication Protocols in Wireless Networks: Performance Analysis and Optimum Power Allocation , 2008, Wirel. Pers. Commun..

[9]  Norman C. Beaulieu,et al.  Ergodic Capacity Analysis of Wireless Relaying Systems In Rayleigh Fading , 2008, 2008 IEEE International Conference on Communications.

[10]  Elza Erkip,et al.  User cooperation diversity. Part I. System description , 2003, IEEE Trans. Commun..

[11]  I. S. Gradshteyn,et al.  Table of Integrals, Series, and Products , 1976 .

[12]  Li Yu,et al.  Performance Analysis of Amplify and Forward Cooperative Relaying Protocol in Wireless Communication System , 2013, Wirel. Pers. Commun..

[13]  Raviraj S. Adve,et al.  Non-Coherent Code Acquisition in the Multiple Transmit/Multiple Receive Antenna Aided Single- and Multi-Carrier DS-CDMA Downlink , 2007 .

[14]  Lingyang Song,et al.  Symbol Error Rate Analysis and Power Allocation for Adaptive Relay Selection Schemes , 2011, Wirel. Pers. Commun..

[15]  He Chen,et al.  Performance Analysis of SNR-Based Hybrid Decode-Amplify-Forward Cooperative Diversity Networks over Rayleigh Fading Channels , 2010, 2010 IEEE Wireless Communication and Networking Conference.

[16]  Aria Nosratinia,et al.  Cooperative communication in wireless networks , 2004, IEEE Communications Magazine.

[17]  Rainer Storn,et al.  Differential Evolution – A Simple and Efficient Heuristic for global Optimization over Continuous Spaces , 1997, J. Glob. Optim..

[18]  Salama Ikki,et al.  Exact Error Probability and Channel Capacity of the Best-Relay Cooperative-Diversity Networks , 2009, IEEE Signal Processing Letters.

[19]  Paeiz Azmi,et al.  Effective Capacity Maximization in Multirelay Networks With a Novel Cross-Layer Transmission Framework and Power-Allocation Scheme , 2014, IEEE Transactions on Vehicular Technology.

[20]  Wang Kang,et al.  SER analysis and power allocation for hybrid cooperative transmission system , 2012 .

[21]  Raviraj S. Adve,et al.  Improving amplify-and-forward relay networks: optimal power allocation versus selection , 2006, IEEE Transactions on Wireless Communications.