Gain normalization correction of PMI and COI feedback for base station with antenna array

摘要

A wireless communication device and a method therein includes estimating a channel for each of a plurality of transmit antenna ports using a reference symbol received from the corresponding antenna port, determining a composite channel estimate based on the estimated channels and based on a precoding matrix, and determining an updated composite channel estimate using the composite channel estimate and using a gain correction corresponding to the precoding matrix. The gain correction can be obtained over-the-air or computed at the wireless communication device.

主权项

1. A wireless communication device comprising:
a transceiver; a processor coupled to the transceiver; the processor configured to estimate a channel for each of a plurality of transmit antenna ports using a reference symbol received from the corresponding antenna port; the processor configured to determine a composite channel estimate based on the estimated channels and based on a precoding matrix; and the processor configured to determine an updated composite channel estimate using the composite channel estimate and additionally using a gain correction for the precoding matrix, wherein the gain correction is based on a data symbol transmitted using the precoding matrix and received at the wireless communication device.