Directional pseudonoise offset assignment in a CDMA cellular rad

Details Directional pseudonoise offset assignment in a CDMA cellular rad Directional pseudonoise offset assignment in a CDMA cellular rad

1997-02-06

1999-03-16

Pham, Chi H.

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

455446, H04B 7216, H04J 1300

Patent

active

058838899

ABSTRACT:
The present invention is based on a tri-cellular grouping of three identical cells. Each cell of the tri-cellular group is driven by a directional antenna that radiates the cell from the center of the group. Multiple tri-cellular groups make up a cellular system having three axes at 0.degree., 120.degree., and 240.degree.. Each axis is comprised of seven total layers, one layer being a repeat of another of the layers. The 512 available system PN offsets are divided up into three groups of 24 offsets, one group for each axis. Each PN offset group is reused only in the direction to which it is assigned.

REFERENCES:
patent: 5430761 (1995-07-01), Bruckert et al.
patent: 5649292 (1997-07-01), Doner
patent: 5715236 (1998-02-01), Gilhousen et al.
patent: 5734983 (1998-03-01), Faruque
patent: 5802474 (1998-09-01), Faruque

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