Communications system
First Claim
1. A local area network comprising:
- a plurality of satellites disposed within a given geographic area, each of said plurality of satellites being connected to selected ones of computers, word processors, printers and other related equipment as well as digitally encoded audio signals and at least one unidirectional antenna, each of said plurality of satellites having a first transmitter coupled to said unidirectional antenna transmitting first signals at a first frequency to others of said plurality of satellites according to a predetermined protocol and a first receiver coupled to said unidirectional antenna receiving second signals at a second frequency from said others of said plurality of satellites according to said predetermined protocol, said first and second frequencies being different; and
a relay disposed in said geographic area having an omnidirectional antenna, each of said unidirectional antennas of said plurality of satellites being in focused communication with said omnidirectional antenna, a second receiver coupled to said omnidirectional antenna to receive said first signals according to said predetermined protocol and a second transmitter coupled to said second receiver and said omnidirectional antenna to convert said first signals to said second signals and to transmit said second signals to said others of said plurality of satellites according to said predetermined protocol;
each of said first and second signals including digital data combined with a single predetermined pseudo-random spreading code having N bits common to all of said plurality of satellites, where N equals to a predetermined number greater than two.
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Accused Products
Abstract
A communication system comprising a plurality of transceivers each being connected to selected ones of data inputs and at least one unidirectional antenna, each of the transceivers having a first transmitter coupled to the unidirectional antenna transmitting first signals at a first frequency to others of the plurality of transceivers according to a predetermined protocol and a first receiver coupled to the unidirectional antenna receiving second signals at a second frequency from others of the plurality of transceivers according to the predetermined protocol, the first and second frequencies being different; and a relay having an omnidirectional antenna in focused communication with the unidirectional antennas of the plurality of transceivers, a second receiver coupled to the omnidirectional antenna to receive the first signals according to the predetermined protocol and a second transmitter coupled to the second receiver and the omnidirectional antenna to convert the first signals to the second signals and to transmit the second signals to the others of the plurality of transceivers according to the predetermined protocol, each of the first and second signals including digital data combined with a pseudo-random spreading code having N bits common to all of the plurality of transceivers where N equals a predetermined number greater than two.
223 Citations
18 Claims
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1. A local area network comprising:
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a plurality of satellites disposed within a given geographic area, each of said plurality of satellites being connected to selected ones of computers, word processors, printers and other related equipment as well as digitally encoded audio signals and at least one unidirectional antenna, each of said plurality of satellites having a first transmitter coupled to said unidirectional antenna transmitting first signals at a first frequency to others of said plurality of satellites according to a predetermined protocol and a first receiver coupled to said unidirectional antenna receiving second signals at a second frequency from said others of said plurality of satellites according to said predetermined protocol, said first and second frequencies being different; and a relay disposed in said geographic area having an omnidirectional antenna, each of said unidirectional antennas of said plurality of satellites being in focused communication with said omnidirectional antenna, a second receiver coupled to said omnidirectional antenna to receive said first signals according to said predetermined protocol and a second transmitter coupled to said second receiver and said omnidirectional antenna to convert said first signals to said second signals and to transmit said second signals to said others of said plurality of satellites according to said predetermined protocol; each of said first and second signals including digital data combined with a single predetermined pseudo-random spreading code having N bits common to all of said plurality of satellites, where N equals to a predetermined number greater than two. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A network according to claim 9, wherein
said first and second signals further include a predetermined number of preamble bits having the same binary value indicating the beginning of a data packet, and said fourth means includes fifth means coupled to said pair of correlators to detect a given number of said predetermined number of said preamble bits, sixth means coupled to said pair of correlators to detect predetermined binary conditions of a given number of bits disposed at the beginning of each frame of said data packet, and seventh means coupled to said pair of correlators to detect the highest correlation peak at the output of said pair of correlators, said fifth, sixth and seventh means cooperating to synchronize said first receiver to said first transmitter transmitting said combined data and spreading code received by said first receiver.
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10. A long distance communication system comprising:
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a plurality of transceivers disposed in a given geographic area, each of said plurality of transceivers having at least one unidirectional antenna, a first transmitter coupled to said unidirectional antenna to transmit first signals at a first frequency to others of said plurality of transceivers according to a predetermined protocol and a first receiver coupled to said unidirectional antenna to receive second signals at a second frequency from said others of said plurality of transceivers according to said predetermined protocol, said first and second frequencies being different; and a relay transceiver disposed in said geographic area having an omnidirectional antenna, each of said unidirectional antennas of said plurality of transceivers being in focused communication with said omnidirectional antenna, a second receiver coupled to said omnidirectional antenna to receive said first signal according to said predetermined protocol and a second transmitter coupled to said second receiver and said omnidirectional antenna to convert said first signals to said second signals and to transmit said second signals to said others of said plurality of transceivers according to said predetermined protocol; each of said first and second signals including digital data combined with a single predetermined pseudo-random spreading code having N bits common to all of said plurality of transceivers, where N equals a predetermined number greater than two. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification