Measurements of MIMO Indoor Channels at 1800 MHz with Multiple Indoor and Outdoor Base Stations

This paper proposes several configurations for multiple base stations in indoor MIMO systems and compares their performance. The results are based on channel measurements realized with a MIMO testbed. The receiver was moved along several routes and floors on an office building. Both outdoor and indoor locations are considered for the transmitters or base stations, which allow the analysis of not only indoor but also outdoor-to-indoor environment. The use of 2 base stations with different system level combinations of the two is analyzed. We show that the configuration with base station selection provides almost as good performance as a full water-filling scheme when the 2 base stations are placed at different locations. Also the spatial correlation properties for the different configurations are analyzed and the importance of considering path loss when evaluating capacity is highlighted.

[1]  L. Garcia-Garcia,et al.  Design and evaluation of a compact antenna array for MIMO applications , 2006, 2006 IEEE Antennas and Propagation Society International Symposium.

[2]  Björn E. Ottersten,et al.  Realization of a Spatially Multiplexed MIMO System , 2006, EURASIP J. Adv. Signal Process..

[3]  C. Gomez-Calero,et al.  Comparison of mimo single and multi-polarized measured channels in indoor WLAN scenarios , 2006, 2006 First European Conference on Antennas and Propagation.

[4]  Harry Leib,et al.  Shannon capacity and eigen-beamforming for space dispersive multipath MIMO channels , 2003, 2003 IEEE Wireless Communications and Networking, 2003. WCNC 2003..

[5]  J. A. McFadden,et al.  The correlation function of a sine wave plus noise after extreme clippings , 1956, IRE Trans. Inf. Theory.

[6]  J. Pierce,et al.  Multiple Diversity with Nonindependent Fading , 1960, Proceedings of the IRE.

[7]  Reiner S. Thomä,et al.  Capacity of MIMO systems based on measured wireless channels , 2002, IEEE J. Sel. Areas Commun..

[8]  Frederick W. Vook,et al.  Wideband MIMO mobile impulse response measurements at 3.7 GHz , 2002, Vehicular Technology Conference. IEEE 55th Vehicular Technology Conference. VTC Spring 2002 (Cat. No.02CH37367).

[9]  Preben E. Mogensen,et al.  A stochastic MIMO radio channel model with experimental validation , 2002, IEEE J. Sel. Areas Commun..

[10]  L. Berger,et al.  Recent Advances in Propagation Characterisationand Multiple Antenna Processing in the 3GPPFramework , 2002 .

[11]  J. D. Parsons,et al.  Crosscorrelation between the envelopes of 900 MHz signals received at a mobile radio base station site , 1986 .

[12]  Michael A. Jensen,et al.  Measured characteristics of the MIMO wireless channel , 2001, IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211).

[13]  Jon W. Wallace,et al.  On signal strength and multipath richness in multi-input multi-output systems , 2003, IEEE International Conference on Communications, 2003. ICC '03..

[14]  H. Asplund,et al.  MIMO channel characteristics in a small macrocell measured at 5.25 GHz and 200 MHz bandwidth , 2005, VTC-2005-Fall. 2005 IEEE 62nd Vehicular Technology Conference, 2005..

[15]  Werner Wiesbeck,et al.  Performance of multiuser MIMO systems under realistic propagation conditions , 2004, ITG Workshop on Smart Antennas (IEEE Cat. No.04EX802).

[16]  F. Tufvesson,et al.  Outdoor to indoor office MIMO measurements at 5.2 GHz , 2004, IEEE 60th Vehicular Technology Conference, 2004. VTC2004-Fall. 2004.

[17]  Jon W. Wallace,et al.  Deficiencies of 'Kronecker' MIMO radio channel model , 2003 .

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

[19]  Laurent Schumacher,et al.  Recents Advances in Propagation Characterisation and Multiple Antenna Processing in the 3GPP Framework , 2002 .

[20]  R. Valenzuela,et al.  Capacities of multi-element transmit and receive antennas: Correlations and keyholes , 2000 .