Title :
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
fDate :
31 May-2 June 2004
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;
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
DOI :
10.1109/CASSET.2004.1321994
