Abstract

In this study, two hop non-regenerative Multiple Input Multiple Output (MIMO) relay network is considered. Each node of the network is equipped with multiple antennas. We apply an efficient linear processing at the relay node only. We utilize Minimum Mean Square Error (MMSE) as the relay receive beamforming and Per-Antenna-Signal to Leakage plus Noise Ratio (PA-SLNR) maximization criteria using Fukunaga Koontz Transform (FKT) is considered to generate relay downlink precoding to mitigate the interference due to the leakage signal. The relay acquires perfect channel state information of the channel between source to relay and relay to the destination. Monte Carlo simulation confirms better performance in terms of ergodic capacity offered by the proposed scheme.

Keywords:

Ergodic capacity, non-regenerative relay, per antenna signal to leakage plus noise, precoding,

References

1. Bölcskei, H., D. Gesbert, C.B. Papadias and A.J. Van Der Veen, 2006. Space-time wireless systems: from array processing to MIMO communications. Cambridge University Press, Cambridge, UK.
   CrossRef    PMid:16564637    
2. Bolcskei, H., R.U. Nabar, O. Oyman and A.J. Paulraj, 2006. Capacity scaling laws in MIMO relay networks. IEEE T. Wirel. Commun., 5: 1433-1444.
   CrossRef    
3. Chandra, A., C. Bose and M.K. Bose, 2011. Wireless relays for next generation broadband networks. IEEE Potentials, 30: 39-43.
   CrossRef    
4. Chen, F., 2013. Optimal design for MIMO relay system. J. Signal Inform. Process., 4: 91.
   
5. Chen, W., H. Zheng, Y. Li, S. Zhang and X. Wu, 2008. Beamforming methods for multiuser relay networks. Proceeding of the IEEE 68th Vehicular Technology Conference (VTC, 2008-Fall, pp: 1-5.
   CrossRef    
6. Fawaz, N., K. Zarifi, M. Debbah and D. Gesbert, 2011. Asymptotic capacity and optimal precoding in MIMO multi-hop relay networks. IEEE T. Inform. Theory, 57: 2050-2069.
   CrossRef    
7. Firag, A., P.J. Smith and M.R. Mckay, 2009. Capacity analysis for MIMO two-hop amplify-and-forward relaying systems with the source to destination link. Proceeding of the IEEE International Conference on Communications (ICC'09), pp: 1-6.
   CrossRef    
8. Gharan, S.O., A. Bayesteh and A.K. Khandani, 2011. Asymptotic analysis of amplify and forward relaying in a parallel MIMO relay network. IEEE T. Inform. Theory, 57: 2070-2082.
   CrossRef    
9. Jin, S., M.R. Mckay C. Zhong and K.K. Wong, 2010. Ergodic capacity analysis of amplify-and-forward MIMO dual-hop systems. IEEE T. Inform. Theory, 56: 2204-2224.
   CrossRef    
10. Lee, K.J., J.S. Kim, G. Caire and I. Lee, 2010. Asymptotic ergodic capacity analysis for MIMO amplify-and-forward relay networks. IEEE T. Wirel. Commun., 9: 2712-2717.
    CrossRef    
11. Mohammadi, J., F. Gao and Y. Rong, 2010. Design of amplify and forward MIMO relay networks with QoS constraint. Proceeding of the IEEE Global Telecommunications Conference (GLOBECOM, 2010), IEEE, pp: 1-5.
    CrossRef    
12. Muñoz-Medina, O., J. Vidal and A. Agustín, 2007. Linear transceiver design in nonregenerative relays with channel state information. IEEE T. Signal Proces., 55: 2593-2604.
    
13. Primak, S. and V. Kontorovich, 2011. Wireless Multi-Antenna Channels: Modeling and Simulation. John Wiley and Sons, NY.
    CrossRef    PMCid:PMC3209144    
14. Saand, A.S., V. Jeoti, M. Saad and M. Naufal, 2014. Relay precoding for dual-hop MIMO network using per antenna SLNR maximization. Proceeding of the IEEE Symposium on Wireless Technology and Applications (ISWTA, 2014), pp: 41-46.
    CrossRef    
15. Saeid, E., V. Jeoti and B.B. Samir, 2012. Efficient PA-SLNR linear precoding for multiuser multiple input multiple output system. Res. J. Appl. Sci. Eng. Technol., 4(15): 2489-2495.
    
16. Shi, H., T. Abe, T. Asai and H. Yoshino, 2007. Relaying schemes using matrix triangularization for MIMO wireless networks. IEEE T. Commun., 55: 1683-1688.
    CrossRef    
17. Van Der Meulen, E.C., 1971. Three-terminal communication channels. Adv. Appl. Probab., 3: 120-154.
    CrossRef    
18. Vouyioukas, D., 2013. A survey on beamforming techniques for wireless MIMO relay networks. Int. J. Antenn. Propag., 2013: 21.
    CrossRef    
19. Wang, Z., W. Chen and J. Li, 2012. Efficient beamforming for MIMO relaying broadcast channel with imperfect channel estimation. IEEE T. Veh. Technol., 61: 419-426.
    CrossRef    
20. Xu, W., X. Dong and W.S. Lu, 2010. Joint optimization for source and relay precoding under multiuser MIMO downlink channels. Proceeding of the IEEE International Conference on Communications (ICC, 2010), pp: 1-5.
    CrossRef    
21. Zhang, J., F. Roemer and M. Haardt, 2011. Beamforming design for multi-user two-way relaying with MIMO amplify and forward relays. Proceeding of the IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP, 2011), pp: 2824-2827.
    CrossRef    
22. Zhang, Y., H. Luo and W. Chen, 2010. Efficient relay beamforming design with SIC detection for dual-hop MIMO relay networks. IEEE T. Veh. Technol., 59: 4192-4197.
    CrossRef    

Competing interests

The authors have no competing interests.

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