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.
Published in:
Emerging Technologies: Frontiers of Mobile and Wireless Communication, 2004. Proceedings of the IEEE 6th Circuits and Systems Symposium on
(Volume:2
)
Date of Conference: 31 May-2 June 2004