Transmit diversity by antenna selection in CDMA downlink

We study transmit diversity concepts in DS/CDMA wireless networks with multiple transmit antennas. The previously proposed diversity techniques are reviewed and their performance is compared to a selective transmit diversity (STD) concept, proposed here for CDMA systems. In all the competing concepts the encoded bits are distributed to all transmit antennas, whereas in the proposed concept bit are transmitted only from the best antenna as indicated by a closed loop antenna selection (CL-AS) subchannel from the terminal to the base. We quantify the achievable gains for these transmit diversity concepts with Monte-Carlo simulations.

[1]  Aradhana Narula.  Information theoretic analysis of multiple-antenna transmission diversity , 1997 .

[2]  Takaya Yamazato,et al.  Convolutionally coded DS/CDMA system using multi-antenna transmission , 1997, GLOBECOM 97. IEEE Global Telecommunications Conference. Conference Record.

[3]  Jack H. Winters,et al.  Two signaling schemes for improving the error performance of frequency division duplex (FDD) transmission systems using transmitter antenna diversity , 1994, Int. J. Wirel. Inf. Networks.

[4]  Fumiyuki Adachi,et al.  Combined effects of phase sweeping transmitter diversity and channel coding , 1992 .

[5]  V. M. DaSilva,et al.  Fading-resistant transmission from several antennas , 1995, Proceedings of 6th International Symposium on Personal, Indoor and Mobile Radio Communications.

[6]  T. Heikkinen,et al.  On downlink power control and capacity with multi-antenna transmission , 1998, VTC '98. 48th IEEE Vehicular Technology Conference. Pathway to Global Wireless Revolution (Cat. No.98CH36151).

[7]  John M. Cioffi,et al.  Spatio-temporal coding for wireless communication , 1998, IEEE Trans. Commun..

[8]  A. Robert Calderbank,et al.  Space-time codes for high data rate wireless communication: performance criteria , 1997, Proceedings of ICC'97 - International Conference on Communications.

[9]  J.H. Winters,et al.  Switched diversity with feedback for DPSK mobile radio systems , 1983, IEEE Transactions on Vehicular Technology.

[10]  A. Wittneben,et al.  A new bandwidth efficient transmit antenna modulation diversity scheme for linear digital modulation , 1993, Proceedings of ICC '93 - IEEE International Conference on Communications.

[11]  Vijitha Weerackody.  Diversity for the direct-sequence spread spectrum system using multiple transmit antennas , 1993, Proceedings of ICC '93 - IEEE International Conference on Communications.

[12]  M. Almgren,et al.  Transmitter diversity with antenna hopping for wireless communication systems , 1997, 1997 IEEE 47th Vehicular Technology Conference. Technology in Motion.

[13]  Andrea Goldsmith,et al.  The capacity of downlink fading channels with variable rate and power , 1997 .