Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...
Reexamination Certificate
2002-02-28
2004-03-23
Cangialosi, Salvatore (Department: 2661)
Multiplex communications
Communication over free space
Having a plurality of contiguous regions served by...
C370S342000, C375S130000
Reexamination Certificate
active
06711145
ABSTRACT:
BACKGROUND
This invention relates to spread spectrum communications and more particularly to a personal communications network which communicates over the same spectrum as used by a plurality of existing narrowband microwave users.
DESCRIPTION OF THE PRIOR ART
The current fixed service, microwave system uses the frequency band 1.85-1.99 GHz. Microwave users in this frequency band typically have a bandwidth of 10 MHz or less.
A problem in the prior art is the limited capacity of the channel, due to the number of channels available in the fixed service, microwave system.
SUMMARY
A spread spectrum base station generates a plurality of spread spectrum signals. The spread spectrum signals encompass a selected frequency spectrum. Frequencies within the selected frequency spectrum having a high microwave power are detected. The spread spectrum signals are notch filtered at the detected frequencies. The notch filtered spread spectrum signals are transmitted.
REFERENCES:
patent: 3571767 (1971-03-01), Bush, III
patent: 3794920 (1974-02-01), Darrow
patent: 4423419 (1983-12-01), Johannessen
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: 4862178 (1989-08-01), Sturza et al.
patent: 4862478 (1989-08-01), McIntosh
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: 5272721 (1993-12-01), Mikoshiba 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
patent: 6115368 (2000-09-01), Schilling
patent: 6407989 (2002-06-01), Schilling
patent: 2241136 (1991-08-01), None
Cangialosi Salvatore
InterDigital Technology Corporation
Volpe and Koenig P.C.
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