SC-FDE V-BLAST system concept for MIMO over satellite with antenna misalignment

For fixed satellite services (FSS) the performance of a single carrier - frequency domain equalizer (SC-FDE) MIMO system concept for line of sight (LOS) MIMO satellite channels is evaluated for the case of orthogonal and nearly orthogonal channels. The channel orthogonality is achieved by adjusting the phase angles within the channel transfer matrix through the LOS path distance which the signals have to travel between the respective transmit-receive antenna pair. This strategy finally leads to locally specific antenna arrangements needed for orthogonal channels with identical eigenmodes and maximum spatial multiplexing gain. For this particular type of channel a system has recently been proposed which revealed a very good performance in terms of bit error rate (BER) and mutual information. However, once the MIMO system has been optimized this way, practical impairments such as movements and maneuvers of the satellite or imperfect antenna arrangements of the user terminals might again cause a violation of the channel orthogonality. In this case the system performance suffers from spatial co-channel interference between the MIMO signal streams, which after all reduces the achievable throughput. This is analyzed and quantified in the paper for a typical scenario, and improvement potential is revealed by the application of a V-BLAST successive interference cancelation (SIC) scheme together with zero-forcing channel equalization.

[1]  Berthold Lankl,et al.  MIMO system implementation with displaced ground antennas for broadband military SATCOM , 2011, 2011 - MILCOM 2011 Military Communications Conference.

[2]  Geoffrey Ye Li,et al.  Broadband MIMO-OFDM wireless communications , 2004, Proceedings of the IEEE.

[3]  Reinaldo A. Valenzuela,et al.  Simplified processing for high spectral efficiency wireless communication employing multi-element arrays , 1999, IEEE J. Sel. Areas Commun..

[4]  B. Lankl,et al.  On the prospects of MIMO SatCom systems: The tradeoff between capacity and practical effort , 2009, 2009 6th International Multi-Conference on Systems, Signals and Devices.

[5]  Berthold Lankl,et al.  Satellite System Design Examples for Maximum MIMO Spectral Efficiency in LOS Channels , 2008, IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference.

[6]  Emre Telatar,et al.  Capacity of Multi-antenna Gaussian Channels , 1999, Eur. Trans. Telecommun..

[7]  Helmut Bölcskei,et al.  Outdoor MIMO wireless channels: models and performance prediction , 2002, IEEE Trans. Commun..

[8]  Thomas M. Cover,et al.  Elements of Information Theory , 2005 .

[9]  István Frigyes,et al.  SAT02-6: Application of the 3D Polarization Concept in Satellite MIMO Systems , 2006, IEEE Globecom 2006.

[10]  Angel E. Lozano,et al.  Layered space-time receivers for frequency-selective wireless channels , 2002, IEEE Trans. Commun..

[11]  Riccardo De Gaudenzi,et al.  MIMO over Satellite: A Review , 2011, IEEE Communications Surveys & Tutorials.

[12]  Gerard Maral,et al.  Satellite Communications Systems: Systems, Techniques and Technology , 2020 .

[13]  Dong-Joon Shin,et al.  Performance analysis of APSK modulation for DVB-S2 transmission over nonlinear channels , 2009, Int. J. Satell. Commun. Netw..

[14]  Reinaldo A. Valenzuela,et al.  V-BLAST: an architecture for realizing very high data rates over the rich-scattering wireless channel , 1998, 1998 URSI International Symposium on Signals, Systems, and Electronics. Conference Proceedings (Cat. No.98EX167).

[15]  S. Weinstein,et al.  Data Transmission by Frequency-Division Multiplexing Using the Discrete Fourier Transform , 1971 .

[16]  Berthold Lankl,et al.  On the Capacity Degradation in Broadband MIMO Satellite Downlinks with Atmospheric Impairments , 2010, 2010 IEEE International Conference on Communications.