Spread spectrum microwave overlay with notch filter

Details Spread spectrum microwave overlay with notch filter Spread spectrum microwave overlay with notch filter

1994-01-21

2000-09-05

Cangialosi, Salvatore

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

370342, 370441, H04B 7216

Patent

active

061153680

ABSTRACT:
A spread spectrum CDMA communications system for communicating data and/or digitized voice between a plurality of users to a plurality of PCN units. The spread spectrum communications system is located within a same geographical region as occupied by an existing microwave system. The spread spectrum can operate without causing undue interference to the microwave system and the microwave system can operate without causing significant interference, less than 1% total users affected, to the PCN system. The spread spectrum CDMA communications system includes a plurality of PCN-base stations and a plurality of PCN units. A PCN-base station has a device for converting the format of the data into a form suitable for communicating over radio waves, a spread spectrum modulator for spread spectrum processing the data, a notch filter, and a transmitter for transmitting the spread spectrum processed converted data from the PCN-base station to a PCN unit. The PCN-base station also has an antenna, and spread spectrum detectors for recovering data communicated from the PCN units. A PCN unit has an antenna, and a detector coupled to the antenna for recovering data communicated from the PCN-base station. The detector includes a spread spectrum demodulator. Also, the PCN unit has a device for converting the format of the data into a form suitable for communicating over radio waves, a spread spectrum modulator, an adjustable notch filter and a transmitter.

REFERENCES:
patent: 3571767 (1971-03-01), Bush, III
patent: 3794920 (1974-02-01), Darrow
patent: 4425642 (1984-01-01), Moses et al.
patent: 4425661 (1984-01-01), Moses et al.
patent: 4426630 (1984-01-01), Folkmann
patent: 4450417 (1984-05-01), Folkmann
patent: 4748639 (1988-05-01), Feggeler
patent: 4965539 (1990-10-01), Korber, Jr.
patent: 5103459 (1992-04-01), Gilhousen et al.
patent: 5161168 (1992-11-01), Schilling
patent: 5180999 (1993-01-01), Edwards
patent: 5185762 (1993-02-01), Schilling
patent: 5218618 (1993-06-01), Sagey
patent: 5228053 (1993-07-01), Miller et al.
patent: 5548809 (1996-08-01), Lemson
patent: 5640385 (1997-06-01), Long et al.
patent: 5655217 (1997-08-01), Lemson
patent: 5666648 (1997-09-01), Stuart

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