Location-Aided Umbrella-Shaped Massive MIMO Beamforming Scheme with Transmit Diversity for High Speed Railway Communications

In this paper, we present a practical simple location-aided umbrella-shaped beamforming scheme with transmit diversity of massive Multiple-input Multiple-output (MIMO) system for high speed railway scenarios. Unlike conventional schemes which combines space-time block coding (STBC) with adaptive beamforming or orthogonal switched beamforming, our scheme needs neither uplink channel covariance matrix (UCCM) nor downlink CCM (DCCM) but precalculates the beamforming weights with the help of train location information, which can be completed through pure off-line calculation and therefore reduce system implementation complexity. A closed-form solution of power allocation optimization is derived and the performance of our scheme is verified with simulations from the perspectives of instantaneous received signal-to- noise ratio (SNR), bit error rate (BER) and handover success probability. It indicates that the performance of our scheme approaches to the combination scheme of STBC and adaptive beamforming (STBC-ABF) without introducing any on-line system complexities.

[1]  Leonard J. Cimini,et al.  Statistical Performance Analysis for MIMO Beamforming and STBC when Co-Channel Interferers Use Arbitrary MIMO Modes , 2012, IEEE Transactions on Communications.

[2]  Abbas Jamalipour,et al.  Wireless communications , 2005, GLOBECOM '05. IEEE Global Telecommunications Conference, 2005..

[3]  Siavash M. Alamouti,et al.  A simple transmit diversity technique for wireless communications , 1998, IEEE J. Sel. Areas Commun..

[4]  Youngwook Ko,et al.  Comparison of adaptive beamforming and orthogonal STBC with outdated feedback , 2007, IEEE Transactions on Wireless Communications.

[5]  Cheng Tao,et al.  Position-Based Modeling for Wireless Channel on High-Speed Railway under a Viaduct at 2.35 GHz , 2012, IEEE Journal on Selected Areas in Communications.

[6]  Erry Gunawan,et al.  Combining ideal beamforming and Alamouti space-time block codes , 2003 .

[7]  Pingyi Fan,et al.  Position-based diversity and multiplexing analysis for high speed railway communications , 2015, 2015 International Workshop on High Mobility Wireless Communications (HMWC).

[8]  Mikael Skoglund,et al.  Combining beamforming and orthogonal space-time block coding , 2002, IEEE Trans. Inf. Theory.

[9]  D. Begusic,et al.  Adaptive beamforming structure with STBC for IEEE 802.11n WLAN systems , 2008, 2008 16th International Conference on Software, Telecommunications and Computer Networks.

[10]  Xiaohu You,et al.  Adaptive Transmit Beamforming with Space-Time Block Coding for Correlated MIMO Fading Channels , 2007, 2007 IEEE International Conference on Communications.

[11]  Bo Ai,et al.  Comparison of Antenna Arrays for MIMO System in High Speed Mobile Scenarios , 2011, 2011 IEEE 73rd Vehicular Technology Conference (VTC Spring).

[12]  Lin Zhang,et al.  Relation between Beamforming and Diversity in MIMO System: A Capacity Perspective , 2009, 2009 5th International Conference on Wireless Communications, Networking and Mobile Computing.

[13]  W.C.Y. Lee,et al.  An optimum solution of the switching beam antenna system , 1997, 1997 IEEE 47th Vehicular Technology Conference. Technology in Motion.

[14]  Li Yan,et al.  Beamforming and Alamouti STBC combined downlink transmission schemes in communication systems for high-speed railway , 2013, 2013 International Conference on Wireless Communications and Signal Processing.

[15]  X. Fang,et al.  Beamforming and positioning-assisted handover scheme for long-term evolution system in high-speed railway , 2012, IET Commun..

[16]  F.P.S. Chin,et al.  Orthogonal switched beams for downlink diversity transmission , 2005, IEEE Transactions on Antennas and Propagation.

[17]  Xiaohui Ye,et al.  Performance Analysis of a Scheme Combined STBC with Beamforming in Spatial Correlated Channel , 2009, 2009 International Conference on Networks Security, Wireless Communications and Trusted Computing.