Title :
An adaptive smart antenna based on space-time weighting scheme
Author :
Shen, Jian-feng ; Wang, Zong-xin
Author_Institution :
Dept. of Commun. Sci. & Eng., Fudan Univ., Shanghai, China
Abstract :
An adaptive smart antenna of space-time weighting scheme based on channel estimation is proposed. The CDMA signal model and multiuser´s multipath channel model are given. The channels of resolvable paths are estimated by maximum likelihood (ML) method. Then a space-time (ST) weighted uplink receiver and a maximum-norm (MN) weighted downlink transmitter are proposed. The simulation of system using the proposed ST receiver and MN transmitter is presented. The better performances than those of the MVDR receiver and MVDR transmitter are shown.
Keywords :
adaptive antenna arrays; channel estimation; code division multiple access; maximum likelihood estimation; multipath channels; multiuser channels; space-time adaptive processing; CDMA signal model; MVDR receiver; MVDR transmitter; adaptive smart antenna; channel estimation; code division multiple access; maximum likelihood method; maximum-norm weighted downlink transmitter; minimum variance distortionless response; multiuser multipath channel model; resolvable path; space time weighted uplink receiver; Adaptive arrays; Antenna arrays; Channel estimation; Downlink; Maximum likelihood estimation; Multiaccess communication; Multipath channels; Signal resolution; Transmitters; Wireless communication;
Conference_Titel :
Applied Electromagnetics and Communications, 2003. ICECom 2003. 17th International Conference on
Print_ISBN :
953-6037-39-4
DOI :
10.1109/ICECOM.2003.1291038
