Patent ID: 7920646

Claim:
A switched beam selecting method of a subscriber station in a sector area of a base station having a smart antenna system forming a switched beam with a plurality of transmitting antennas, the switched beam selecting method comprising: receiving a pilot signal that is generated to discern the plurality of transmitting antennas and is transmitted from the base station through a sector beam; identifying an antenna from which the pilot signal is transmitted based on a code allocated to a neighboring subchannel when the base station employs an orthogonal frequency division multiplexing method, or identifying an antenna from which the pilot signal is transmitted based on a time interval in which the pilot signal is transmitted when the base station employs a single carrier method; estimating channels for respective transmitting antennas by using the pilot signal; calculating received signal-to-noise ratios (SNRs) based on respective weight value vectors by using estimates of the estimated channels and a plurality of predetermined weight value vectors for forming the switched beam; detecting a weight value vector corresponding to a maximum value among the calculated received SNRs; transmitting an identifier corresponding to the detected weight value vector to the base station; and receiving a signal through a directional beam formed by a switched beam from the base station, the switched beam being generated based on the identifier in the base station.