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

摘要

PROBLEM TO BE SOLVED: To enhance a synchronization accuracy of phase when a plurality of signals are synthesized at a receiving side device, and improve frequency use efficiency.SOLUTION: A base station device acquires channel information of each frequency component in an uplink between the antenna and a terminal device for each antenna, and calculates relative channel information to the criterion channel information of each frequency component from the channel information of each frequency component corresponding to each of other antennas by using a complex phase calculated based on a complex phase of the channel information of each frequency component corresponding to an antenna as a reference. The device calculates the average value of relative channel information of each frequency component for every antenna respectively, and performs reception processing using a reception weight obtained based on the calculated average value. The number of signal systems for coinstantaneously spatial-multiplexing in response to the relative reception interference obtained based on a preamble signal by using a circulation delay preamble and provided to other terminal device from each terminal device, are optimized.