| 摘要 |
To efficiently perform adaptive control even in the case of many transmission/reception antennas, a base station 200 is provided with a reference signal for channel state measurement generation part 209 that generates a reference signal for channel state measurement for a mobile terminal 300 to measure a channel state, and transmission antenna parts 208-1, 208-2 that transmit reference signal for channel state measurements to the mobile terminal 300 with each transmission antenna port, and the mobile terminal 300 is provided with reception antenna parts 301-1, 301-2 that receive the reference signal for channel state measurements transmitted from the base station 200 in reception antenna ports, and a feedback information generation part 310 which measures a channel state between the transmission antenna port and the reception antenna port based on the received reference signal for channel state measurement to calculate a channel state estimation value, performs grouping on a plurality of channel state estimation values, and generates feedback information for the base station 200. |
