초록 ▼

An integrated radio frequency communication system, known as a Location-Ruled Radio-Integrated Network (LORRAINE) system, provides integrated voice, data and location services. The radio frequency communications system combines time division multiplexing (TDM) techniques with optional time division

An integrated radio frequency communication system, known as a Location-Ruled Radio-Integrated Network (LORRAINE) system, provides integrated voice, data and location services. The radio frequency communications system combines time division multiplexing (TDM) techniques with optional time division duplexing (TDD) or frequency division duplexing (FDD) techniques to provide a plurality of time slot channels for these services. Spread spectrum techniques help reduce noise and interference in the system.

대표청구항 ▼

[ What is claimed is:] [1.] A method of radio frequency (RF) communications providing integrated location, voice, data, facsimile and other services, comprising the steps of:(a) modulating a multiplexed data stream;(b) dividing a transmission channel into a plurality of sub-channels;(c) sequentially

[ What is claimed is:] [1.] A method of radio frequency (RF) communications providing integrated location, voice, data, facsimile and other services, comprising the steps of:(a) modulating a multiplexed data stream;(b) dividing a transmission channel into a plurality of sub-channels;(c) sequentially selecting the sub-channels using a correlated portion of a pseudo-noise (PN) code;(d) synthesizing sub-frequencies associated with each selected sub-channel;(e) encoding the correlated portion of the PN code into the synthesized sub-frequencies associated with each selected sub-channel; and(f) combining the modulated, multiplexed data stream with the synthesized and encoded sub-frequencies to create a transmission signal.