TERMINAL DEVICE, BASE STATION DEVICE, COMMUNICATION SYSTEM AND COMMUNICATION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a terminal device, a base station device, a communication system and a communication method which are capable of specifying and applying precoder information efficiently by using multiple portions of precoder information.

SOLUTION: A communication system performs communication between a base station device and a terminal device. The base station device sets the terminal device in any one of the following modes: a first feedback mode in which the terminal device periodically reports one set of precoder information specifying one preferable precoder to the base station device and a second feedback mode in which the terminal device periodically reports multiple portions of precoder information specifying the preferable precoder to the base station device. The mobile terminal reports either the set of precoder information or the portions of precoder information to the base station device depending on the set feedback mode.

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