Smart antenna for combined downlink beam-forming with transmit diversity in TDD-CDMA system

Author

Tang, Zhenfei ; Cao, Weifeng ; Wang, Wenbo

Author_Institution

Beijing Univ. of Posts & Telecommun., China

Volume

2

fYear

2004

fDate

31 May-2 June 2004

Firstpage

741

Abstract

Downlink beam-forming algorithms are applied to the smart antenna system to reduce the transmission power and resist intra-cell interference (MAI). On the other hand transmit diversity technique is used to overcome the multipath fading environment by providing better channel conditions. This work proposes a hybrid scheme combining downlink beam-forming with transmit diversity in TDD-CDMA radio mobile system. This hybrid scheme is found to provide a significant gain over conventional beam-forming with the same complexity. This new hybrid scheme of smart antenna is analyzed and the simulation results are also given.

Keywords

adaptive antenna arrays; array signal processing; cellular radio; code division multiple access; diversity reception; fading channels; mobile antennas; multipath channels; radiofrequency interference; MAI; TDD-CDMA radio mobile system; code division multiple access; downlink beam-forming algorithm; intra-cell interference; multipath fading environment; smart antenna system; transmit diversity technique; Antenna arrays; Diversity methods; Diversity reception; Downlink; Fading; Mobile antennas; Multiple access interference; Receiving antennas; Solid modeling; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Emerging Technologies: Frontiers of Mobile and Wireless Communication, 2004. Proceedings of the IEEE 6th Circuits and Systems Symposium on

Print_ISBN

0-7803-7938-1

Type

conf

DOI

10.1109/CASSET.2004.1321994

Filename

1321994