Performance of diversity systems with 2 and 4 transmit antennas

We investigate the principles of existing 2 transmit antenna systems and then introduce two new transmit antenna diversity configurations for 4-transmit antenna systems. The bit error rate performances of the proposed systems are obtained. We show that by using two more antennas and the same total transmit power, diversity gains of up to 5 dB can be achieved over 2-transmit antenna systems.

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

[2]  Ran Gozali,et al.  Space-Time Codes for High Data Rate Wireless Communications , 2002 .

[3]  A. Wittneben.  Basestation modulation diversity for digital simulcast , 1991, [1991 Proceedings] 41st IEEE Vehicular Technology Conference.

[4]  A. Yongacoglu,et al.  Space-time codes for fading channels , 1999, Gateway to 21st Century Communications Village. VTC 1999-Fall. IEEE VTS 50th Vehicular Technology Conference (Cat. No.99CH36324).

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