Channel condition estimation

A method for obtaining channel conditions per antenna element, the method being performed by a wireless radio transceiver device comprising N antenna elements in an antenna array with analog beamforming and being configured to communicate using beams, the method comprising:

• obtaining, for a stationary radio propagation channel, channel conditions for signals received by the wireless radio transceiver device in M beams, where M>1;
• and
• transforming the channel conditions for the M beams to channel conditions for the N antenna elements by using a relation based on beamforming weights that map the N antenna elements to the M beams.

A computer program product comprising a non-transitory computer readable medium storing a computer program for obtaining channel conditions per antenna element, the computer program comprising computer code which, when run on processing circuitry of a radio transceiver device comprising N antenna elements in an antenna array with analog beamforming and being configured to communicate using beams, causes the radio transceiver device to:

• obtain, for a stationary radio propagation channel, channel conditions for signals received by the wireless radio transceiver device in M beams, where M>1;
• and
• transform the channel conditions for the M beams to channel conditions for the N antenna elements by using a relation based on beamforming weights that map the N antenna elements to the M beams.