Patent ID: 6445926
Filing Date: 2002-09-03
Classification: H01Q,H04L,H04W

Abstract:
A system for optimizing frequency re-use within a cell of a cellular wireless communications system comprising:a base station within the cell and having a sectored antenna dividing the cell into four sectors, the sectored antenna transmitting point to multipoint communications to customer premise equipment (CPE) at sites within said sectors; a directional antenna at each CPE for receiving communications from said sectored antenna and for transmitting point to point communications to said base station; polarization means at said base station for transmitting and receiving orthogonally polarized radiation; and polarization means at said CPE directional antennas for receiving and transmitting orthogonally polarized radiation, said CPE directional antenna having a cross polarization rejection ratio in the order of 20 to 40 dB; wherein orthogonally polarized radiation is employed between adjacent sectors and radiation between adjacent sectors have a common carrier frequency, wherein said orthogonal radiation comprises linear âˆ’45 degree polarization and linear +45 degree polarization relative to vertical linear.