CODEBOOK DESIGN AND STRUCTURE FOR ADVANCED WIRELESS COMMUNICATION SYSTEMS

摘要

A base station capable of communicating with a user equipment (UE) includes a transceiver configured to transmit Channel State Information-Reference Signal (CSI-RS) according to a CSI-RS configuration comprising a number of antenna ports, and downlink signals containing the CSI-RS configuration and a precoding-matrix-construction configuration for precoding matrix indicator (PMI) reporting on physical downlink shared channels (PDSCH), the precoding-matrix-construction configuration comprising a first and second sampling factors, O1 and O2, and a first and second numbers, N1 and N2, receive, from the UE, uplink signals containing a precoding matrix indicator (PMI) derived using the CSI-RS according to the precoding-matrix-construction configuration, a controller configured to convert the PMI to one of predetermined precoding matrices. Other embodiments including UEs and methods are disclosed.

主权项

1. A base station capable of communicating with a user equipment (UE), the base station comprising:
a transceiver configured to:
transmit
Channel State Information-Reference Signal (CSI-RS) according to a CSI-RS configuration comprising a plurality of antenna ports; anddownlink signals containing the CSI-RS configuration and a precoding-matrix-construction configuration for precoding matrix indicator (PMI) reporting on physical downlink shared channels (PDSCH), the precoding-matrix-construction configuration comprising a first and second oversampling factors, O1 and O2, and a first and second numbers, N1 and N2;receive, from the UE, uplink signals containing a plurality of precoding matrix indicators (PMIs) derived using the CSI-RS according to the precoding-matrix-construction configuration; a controller configured to convert the number of PMIs to one of predetermined precoding matrices having a form of[h⊗vjϕh⊗v], wherein φ is a co-phasing factor, and h and v are vectors of size N1×1 and N2×1, respectively.