CPC H04B 7/0658 (2013.01) [H04B 7/0408 (2013.01); H04B 7/0617 (2013.01); H04B 7/0639 (2013.01)] | 27 Claims |
1. A method of wireless communications by a first wireless communications device, the method comprising:
receiving one or more signals from a second wireless communications device;
determining a precoder matrix index (PMI) based on the signals;
determining one or more parameters for performing a frequency domain compression of the PMI to select a first subset of a plurality of taps corresponding to a plurality of beams based on a time domain representation of the PMI in a first stage and to select a second subset of the first subset for each beam of the plurality of beams in a second stage;
performing the frequency domain compression of the PMI according to the parameters; and
transmitting information regarding the frequency domain compressed PMI to the second wireless communications device.
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