A CDMA base station includes an antenna system having multiple antennas and delay units for receiving a transmitted signal and outputting a combined signal having a known distortion imparted by the antenna system. The combined signal is in turn processed by a modem, which compensates for the known distortion...http://www.google.ca/patents/US6466567?utm_source=gb-gplus-sharePatent US6466567 - CDMA base station having an improved antenna system
