Importance

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Abstract

Two, three or more competitive personal communications network spread spectrum systems share spectrum without interfering with each other, without significantly decreasing the chip rate of each PCN system, and without increasing the level of interference seen by fixed service users. A duopoly of spread spectrum communications system includes a first transmitter station, a second transmitter station, a first receiver station and a second receiver station. A transmitter at the second transmitter station transmits a spread spectrum signal on a carrier frequency which is offset from the carrier frequency of the first transmitter at the transmitter station by the chip rate. A tripoly of spread spectrum communication system includes the elements of the duopoly spread spectrum system and further includes a third transmitter station and a third receiver station. A third transmitter at the third transmitter station transmits a spread spectrum signal on a carrier frequency which is offset from the first carrier frequency by twice the chip rate. The first, second and third receiver stations each have receivers which receive the respect of spread spectrum signals from the first, second and third transmitter stations. A polyopoly overlapping spread spectrum communications system may be used which allows many users to transmit and receive throughout the frequency regime.

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First Claim