Patent ID: 6889061

Claim:
A base station, comprising: an antenna arrangement including at least one set of transmit antenna elements configured to transmit radiated beam patterns and at least one set of receive antenna elements configured to receive radiated beam patterns, each antenna element within said set of transmit antenna elements and said set of receive antenna elements containing different polarization states; a transformation mechanism including at least one antenna port coupled to said antenna arrangement and at least one beam port, said transformation mechanism configured to transform a plurality of receive antenna port signals generated from said set of receive antenna elements into a plurality of receive beam port signals and to transform a plurality of transmit beam port signals into a plurality of transmit antenna port signals capable of being transmitted by said set of transmit antenna elements; and an adaptive measurement and control mechanism coupled to said transmit and receive antenna port signals, said measurement and control mechanism configured to measure and adaptively control attributes of said transmit and receive antenna port signals, wherein said measurement and control mechanism utilizes the attributes of said receive antenna port signals to adaptively adjust the polarization states of said set of transmit antenna elements in order to transmit beam patterns matching a polarization state of a mobile station.