Beamforming method, apparatus for polarized antenna array and radio communication device and system thereof

A radio communication device, comprising:

• an antenna array;
• and
• a transmitter configured to transmit a plurality of signals to a terminal using said antenna array,
• wherein said signals are weighted with one or more hybrid beamforming weights,
• wherein at least one of said hybrid beamforming weights is based on a first beamforming weight for phase compensation among antenna elements within a polarization direction of said antenna array and a second beamforming weight for phase compensation between equivalent channels of two polarization directions of said antenna array.

A method for transmitting signals from a radio communication device having a polarized antenna array, the method comprising:

• determining one or more first beamforming weights for phase compensation among a plurality of antenna elements of said antenna array within at least one polarization direction;
• determining one or more second beamfoiuiing weights for phase compensation between equivalent channels of two polarization directions;
• calculating one or more hybrid beamforming weights based on said first beamforming weights and said second beamforming weights;
• and
• transmitting, from said radio communication device to a terminal, one or more signals weighted with said hybrid beamfoiniing weights.