RADIO SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a radio system which causes no interference between subscriber stations and can use limited frequencies effectively and repeatedly. SOLUTION: In the radio system, respective base stations are divided into plural sectors and the horizontal directivity directions of antennas of the respective sectors are made different; and the antenna beam of each antenna covers the whole azimuth in a horizontal plane as a whole and antennas using the same frequency and the same polarized wave are all arranged nearly in the same direction.