Method and precoder information feedback in multi-antenna wireless communication systems

摘要

A method for two component feedback in wireless communication systems is disclosed, with a wireless communication device sending a first representation of a first matrix chosen from a first codebook, wherein the first matrix has at least two columns, the wireless communication device sending a second representation of a second matrix chosen from a second codebook, and the base station obtaining a precoder from the first representation and the second representation.

主权项

1. A wireless communication device configured for sending precoder matrix information to a base station, the device comprising:
a transmitter configured for sending a first representation of a first matrix chosen from a first codebook, wherein the first matrix has at least two column vectors, and for sending a second representation of a second matrix chosen from a second codebook; wherein the first representation and the second representation together convey a precoder matrix of one or more vectors associated with one or more spatial layers, the precoder matrix comprises a first sub-precoder matrix including a first set of weights on a first subset of transmit antennas of the base station, and a second sub-precoder matrix including a second set of weights on a second subset of transmit antennas of the base station, wherein the first and the second subsets of transmit antennas of the base station are non-overlapping; and wherein the first sub-precoder matrix is one or more column vectors of the first matrix corresponding to the first representation, multiplied by one or more entries of the second matrix corresponding to the second representation, and the second sub-precoder matrix is one or more column vectors of the first matrix corresponding to the first representation, multiplied by one or more entries of the second matrix corresponding to the second representation.