초록 ▼

A multiple access communication system comprising a plurality of cells, each cell comprising a plurality of sectors. A base station is located in each cell and has a plurality of antennas. Each antenna covers a sector of the cell and is associated with a polarization characteristic. In one embodimen

A multiple access communication system comprising a plurality of cells, each cell comprising a plurality of sectors. A base station is located in each cell and has a plurality of antennas. Each antenna covers a sector of the cell and is associated with a polarization characteristic. In one embodiment, each cell has two sectors, and each sector facing a first direction has an antenna with a first polarization characteristic, while each sector facing a second, opposite direction has an antenna with a second polarization characteristic. In another embodiment, each cell is divided into four sectors generally arranged as quadrants. Two adjacent sectors have antennas with a first polarization characteristic, while the other two adjacent sectors have antennas with a second polarization characteristic. In a preferred embodiment, the first polarization characteristic is left hand circular polarization, and the second polarization characteristic is right hand circular polarization. Alternatively, vertically polarized antennas and horizontally polarized antennas may be used instead of circularly polarized antennas. Frequencies may be assigned to the cells in a three-frequency reuse pattern or a seven-frequency reuse pattern, or in any other suitable arrangement.

대표청구항 ▼

[ What is claimed is:] [1.]1. A wireless system, comprising:a plurality of cells disposed in a repeating frequency reuse pattern, such that a frequency assigned to each cell is different from frequencies assigned to its immediately adjacent cells;each of said cells including at least a first, second

[ What is claimed is:] [1.]1. A wireless system, comprising:a plurality of cells disposed in a repeating frequency reuse pattern, such that a frequency assigned to each cell is different from frequencies assigned to its immediately adjacent cells;each of said cells including at least a first, second, third, and fourth sector;a base station in each of said cells and having a plurality of antennas;a first antenna associated with each of said first sectors in each of said plurality of cells;a second antenna associated with each of said second sectors in each of said plurality of cells, said first antenna associated with a first polarization characteristic, and said second antenna associated with a second polarization characteristic, wherein said first and second sectors in adjacent cells are substantially adjacent to one another;a third antenna associated with each of said third sectors in each of said plurality of cells; anda fourth antennas associated with each of said fourth sectors in each of said plurality of cells, said third antenna associated with said first polarization characteristic, and said fourth antenna associated with said second polarization characteristic, wherein said third and fourth sectors in adjacent cells are substantially adjacent to one another.