论文信息 - Measurement of Demmel condition number for 2/spl times/2 MIMO-OFDM broadband channels

Measurement of Demmel condition number for 2/spl times/2 MIMO-OFDM broadband channels

The suitability of a complex multiple-input multiple-output (MIMO) channel matrix for spatial multiplexing (SM) is verified experimentally in terms of the Demmel condition number of the instantaneous MIMO channel matrix. Instantaneous 2/spl times/2 MIMO-orthogonal frequency division multiplexing (OFDM) channel measurements in several indoor environments indicate a location dependency of the Demmel condition number. Wideband frequency characteristics of the Demmel condition number in terms of OFDM sub-carriers are also analyzed to evaluate the applicability of SM in a wideband situation.

N. Kita | W. Yamada | A. Sato | D. Mori | S. Uwano

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

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

[3] Yusuke Asai,et al. SDM-COFDM scheme using feed-forward inter-channel interference canceller for broadband mobile communications , 2002, Vehicular Technology Conference. IEEE 55th Vehicular Technology Conference. VTC Spring 2002 (Cat. No.02CH37367).

[4] Robert W. Heath,et al. Diversity Versus Multiplexing in Narrowband MIMO Channels : A Tradeoff Based on Euclidean Distance , 2001 .

[5] A. Robert Calderbank,et al. Space-Time block codes from orthogonal designs , 1999, IEEE Trans. Inf. Theory.

[6] Yusuke Asai,et al. Development of a novel SDM-COFDM prototype for broadband wireless access systems , 2003, 2003 IEEE Wireless Communications and Networking, 2003. WCNC 2003..

[7] A. Robert Calderbank,et al. Space-Time Codes for High Data Rate Wireless Communications : Performance criterion and Code Construction , 1998, IEEE Trans. Inf. Theory.