Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...
Patent
1997-12-15
2000-10-03
Pham, Chi H.
Multiplex communications
Communication over free space
Having a plurality of contiguous regions served by...
370342, H04B 7216
Patent
active
06128288&
ABSTRACT:
In a radio communication system capable of autonomously determining, at new installation thereof, a spreading code to be used by its own station, a CDMA base station facility includes a storage unit for storing therein all candidates of spreading codes available to base stations of the system, a base station signal receiving unit for receiving signals sent from its neighboring base stations, a correlation value calculating unit for calculating correlation values between the received signals from the neighboring base stations and the spreading codes stored in the storage unit, a comparing means for comparing the calculated correlation values with each other, and a spreading code selecting means for selecting, in accordance with a result of the comparison, a kind and/or a phase of spreading code to be used by the own station. When installed at a new place, the facility receives signals from its neighboring base stations and autonomously selects spreading codes and/or phases of spreading code not used in its periphery to set a spreading code of the own station.
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Matsushita Electric - Industrial Co., Ltd.
Pham Brenda H.
Pham Chi H.
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