IMPROVING COMMUNICATION EFFICIENCY

There is provided a method at a user equipment, comprising: receiving transmission on two different polarizations over a wireless channel from network (300); determining a plurality of coefficients associated with a precoding matrix based on channel measurements of the reception, wherein the coefficients at least partially define a combination matrix (302); selecting a coefficient among the coefficients of the weaker polarization, the selected coefficient being a reference coefficient for the weaker polarization (304); determining a first indicator and a second indicator for the reference coefficient, wherein the first indicator indicates a position of the reference coefficient in the combination matrix and the second indicator comprises an amplitude value associated with the reference coefficient (306); reporting the first and second indicators to the network (308).