Base station apparatus and radio transmitting method

摘要

Direction of arrival estimation sections (107) and (108) estimate the directions of arrival of signals from a plurality of communication terminal apparatuses, decision circuit (110) detects communication terminal apparatuses whose directions of arrival of signals are close to one another based on the estimated direction of arrival information, transmission weight generation circuit (111) forms transmission directivity common to the communication terminal apparatuses detected by decision circuit (110) and transmits signals by radio to communication terminal apparatuses (151) and (152) whose directions of arrival of signals are close to one another using the common transmission directivity.