Patent ID: 8761289

Claim:
A method, comprising: receiving a Multiple-Input Multiple Output (MIMO) signal over multiple communication channels from an antenna array including a first set of antennas having a first polarization and a second set of the antennas having a second polarization that is orthogonal to the first polarization; calculating first feedback information relating to first interrelations between the antennas within either the first set or the second set; calculating second feedback information relating at least to second interrelations between the first set and the second set of the antennas; and transmitting at least part of the first feedback information at a first time/frequency granularity, and transmitting the second feedback information, plus a portion of the first feedback information that relates only to the interrelations between the antennas within either the first set or the second set and not to the interrelations between the first set and the second set of the antennas, at a second time/frequency granularity that is finer than the first time/frequency granularity, wherein the portion of the first feedback information includes a normalization factor for an overall Dower of the signal.