Patent ID: 9661579
Date: 2017-05-23
CPC Classifications: H04L,H04W

Claim:
1. A method in a first communication device, comprising: calculating, by the first communication device, channel state information (CSI) corresponding to propagation of signals transmitted from the first communication device to a second communication device via an orthogonal frequency division multiplexing (OFDM) channel; based on the CSI, applying, at the first communication device, a beamsteering matrix to signals that are to be transmitted to the second communication device via the OFDM channel; determining, by the first communication device and using the first signal attenuation level, that i) signals transmitted over the first sub-carrier are below a desired power level, and ii) power loaded to the signals transmitted over the first sub-carrier is to be increased; determining, by the first communication device and using the second signal attenuation level, that i) signals transmitted over the second sub-carrier are above the desired power level, and ii) power loaded to the signals transmitted over the second sub-carrier is to be decreased; and transmitting, by the first communication device, data encoded over subcarriers in the OFDM channel, including