Patent ID: 7257424
Filing Date: 2007-08-14
Classification: H04B

Abstract:
1. A transceiver method in a radio system using several antennas for at least one of a signal transmission and a signal reception of a signal propagating through a radio channel, and wherein the radio system comprises a transceiver of a first type and at least one transceiver of a second type, the method comprising: transmitting a signal of at least one type by a transceiver of a first type by using at least one antenna; receiving a signal by a transceiver of a second type by using at least two antennas of different polarizations; performing by the transceiver of the second type measurements of the received signal to determine a polarization of the received signal; determining a polarization of the transceiver of the first type based upon measured data received from polarization determination measurements of the polarization of the received signal; adjusting a signal transmitted by the transceiver of the second type to match the polarization of the signal transmitted by the transceiver of the second type with the polarization used by the transceiver of the first type; transmitting at least two polarization-matched signals by the transceiver of the second type, wherein one signal of the at least two polarization-matched signals is orthogonally polarized relative to another signal of the at least two polarization-matched signals, and wherein the at least two polarization-matched signals comprise different data streams with different content; and receiving the at least two polarization-matched signals by the transceiver of the first type by using at least two antennas of different polarizations.