Channel Capacity Measurement of 8$\,\times\,$ 2 MIMO Transmission by Antenna Configurations in an Actual Cellular Environment

Experimental results are presented for an 8times2 multiple-input multiple-output (MIMO) channel in an actual cellular environment. This paper focuses in particular on the characteristics of the channel capacity based on the number of antennas and the difference in antenna polarizations, i.e., vertical, vertical and horizontal, and slanted plusmn45deg, at both the base and the terminal stations. The antenna configuration with the plusmn45deg slanted polarization achieves the highest channel capacity when the number of array antennas is less than four at the signal-to-noise ratio (SNR) from 5 to 40 dB in an actual outdoor environment. Moreover, we confirm that the most effective antenna configuration changes based on the SNR or the number of antennas at the base station

[1]  K. Cho,et al.  Evaluation of SDMA employing vertical pattern and polarization control in actual cellular environment measurement , 2004, 2004 IEEE 59th Vehicular Technology Conference. VTC 2004-Spring (IEEE Cat. No.04CH37514).

[2]  Arogyaswami Paulraj,et al.  Capacity obtained from multiple-input multiple-output channel measurements in fixed wireless environments at 2.5 GHz , 2002, 2002 IEEE International Conference on Communications. Conference Proceedings. ICC 2002 (Cat. No.02CH37333).

[3]  David Gesbert,et al.  From theory to practice: an overview of MIMO space-time coded wireless systems , 2003, IEEE J. Sel. Areas Commun..

[4]  Yusuke Asai,et al.  A SDM-COFDM Scheme Employing a Simple Feed-Forward Inter-Channel Interference Canceller for MIMO Based Broadband Wireless LANs , 2003 .

[5]  Nelson Sollenberger,et al.  MIMO radio channel measurements: performance comparison of antenna configurations , 2001, IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211).

[6]  V. Erceg,et al.  Multiple-input multiple-output fixed wireless radio channel measurements and modeling using dual-polarized antennas at 2.5 GHz , 2004, IEEE Transactions on Wireless Communications.

[7]  M. Beach,et al.  A software and hardware evaluation of revolutionary turbo MIMO OFDM schemes for 5 GHz WLANs , 2003, The 57th IEEE Semiannual Vehicular Technology Conference, 2003. VTC 2003-Spring..

[8]  Rohit U. Nabar,et al.  Introduction to Space-Time Wireless Communications , 2003 .

[9]  Heng-Cheng Lin.  Spatial correlations in adaptive arrays , 1982 .

[10]  M. J. Gans,et al.  On Limits of Wireless Communications in a Fading Environment when Using Multiple Antennas , 1998, Wirel. Pers. Commun..

[11]  C.C. Martin,et al.  Multiple-input multiple-output (MIMO) radio channel measurements and experimental implementation for EDGE , 2000, Conference Record of the Thirty-Fourth Asilomar Conference on Signals, Systems and Computers (Cat. No.00CH37154).