This paper studies the application of smart antennas to the downlink in the FDD-CDMA. We estimate thedownlink channel covariance matrix and the relative interference to users of the other cells by using the uplink data.

and present a method for downlink beamforming

i. e.

we obtain the minimum relative interference to other users while the constanttransmitting power is guaranteed. The computer simulations show that this method has lower outage probility than themethod of only assuring maximum array gain in direction of the use.