(57) ABSTRACT A method and apparatus provide antenna array channel feed back. The
method can include receiving a first set of channel state information reference signals on …

A method and apparatus provide antenna array channel feedback. The method can include
receiving, at a wireless terminal, a set of channel state information reference signals. The …

Scalable channel state information feedback for FD-MIMO involves quantizing the downlink
channel according to a finite set of basis vectors to reduce the number of coefficients …

(57) ABSTRACT A method and apparatus provide antenna array channel feed back. The
method can include receiving, at a wireless termi nal, a set of channel state information …

19, 2011 E. application No. 61 (577.20 6. tion element (IE) from a first base station. The
wireless device filed on Dec. 19, 2011, provisional application No. computes a precoding …

A Precoding-codebook-base Secure Uplink (PSU) scheme is proposed to utilize the channel
reciprocity, uniqueness, and randomness in solving the secure initiation problem. A UE …

US9332528B2 - Method and device for feeding back precoding matrix indicator using interpolation
- Google Patents US9332528B2 - Method and device for feeding back precoding matrix …

A wireless device receives messages indicating CSI measurement resources of cells
belonging to at least two base stations or belonging to at least two sectors of a base station …

A base station receives a message comprising at least one index identifying a subset of a
second plurality of beamforming codewords. Each of the second plurality of beamforming …

Provided is a precoding method for generating, from a plurality of baseband signals, a
plurality of precoded signals to be transmitted over the same frequency bandwidth at the …