Patent ID: 9407343
Filing Date: 2016-08-02
CPC Classification: H04B,H04J,H04L,H04W

Claim Text:
1. A method in a wireless terminal, the method comprising: estimating, by a logic circuit of the wireless terminal, a first channel matrix based on a first reference signal that corresponds to a first geographic sector including one or more transmission points; estimating, by the logic circuit, a second channel matrix based on a second reference signal that corresponds to a second geographic sector including one or more transmission points; determining, by the logic circuit, a pair of precoding matrices based on the first channel matrix and the second channel matrix, the pair of precoding matrices being selected to maximize a mutual information metric that includes a maximum rate at which reliable communication occurs between the wireless terminal and one or more transmission points wherein reliable communication includes mitigation of bit error; wherein a first precoding matrix of the pair is applicable to the first geographic sector and represents an assumption that a desired signal is precoded at a first transmission point by the first precoding matrix, wherein a second precoding matrix of the pair is applicable to the second geographic sector and represents an assumption that an interference signal is precoded at a second transmission point by the second precoding matrix, and sending, to at least one transmission point, a channel state information, the channel state information including information relating to the precoding matrix pair.