Abstract: A transmitter system includes a processor that synthesizes a randomly varying, non-differentiable waveform by applying independent, pseudo-random variations to a number of transmission parameters to produce a number of independent pseudo-random variable stochastic processes with independent distributions within the waveform. Examples of transmitter parameters that can be varied include: a PN spreading sequence segment; a PN spreading symbol rate; a chip clock frequency; a chip frequency-dwell period; a data symbol rate; a data symbol rate dwell; an RF carrier frequency; and a carrier frequency dwell-time.

Abstract: A secure information transmission system includes one or more transmitters and one or more receivers. The transmission waveform employed includes highly randomized, independent stochastic processes, and is secured as a separate entity from the information it carries. The signal, using novel modulation methodology reducing impulse responses, has a paucity of spectral information and may be detected, acquired and demodulated only by communicants generating the necessary receiving algorithm coefficients. The physical area of signal reception is restricted to that of each intended communicant, reception areas following movements of mobile communicants. A unique instant in time is used as basis for communications keys to the securing algorithms dynamically generated on a one-time basis and never exchanged or stored by communicants.

Abstract: A secure information transmission system includes one or more transmitters and one or more receivers. The transmission waveform employed includes highly randomized, independent stochastic processes, and is secured as a separate entity from the information it carries. The signal, using novel modulation methodology reducing impulse responses, has a paucity of spectral information and may be detected, acquired and demodulated only by communicants generating the necessary receiving algorithm coefficients. The physical area of signal reception is restricted to that of each intended communicant, reception areas following movements of mobile communicants. A unique instant in time is used as basis for communications keys to the securing algorithms dynamically generated on a one-time basis and never exchanged or stored by communicants.

Abstract: A network of telephone subscribers, located remote from the primary telephone system, includes subscriber stations having two frequency-agile, multi-channel duplex transceivers for communicating with a central office having one duplex transceiver for each channel. The central station includes controls for automatically configuring subscriber stations as repeaters to permit calls to and from other subscriber stations to be routed through repeater-configured subscriber stations. Signalling is transmitted out of band so that it can be transmitted via intermediate subscriber stations which may be involved in another call. The most direct available route for each call is continuously updated during the progress of the call to minimize the number of subscriber stations involved in the call. Each subscriber station serves two subscriber loops and permits calls between those loops without transmission via the central station. Likewise, calls between subscriber stations do not pass through the central station.

Abstract: In a multi-channel mobile radio telephone system with multiple base stations covering different geographical areas, mobiles may move freely from area to area and automatically originate and receive calls to and from a landswitched telephone network by direct dialing to and from anywhere in the system by means of a Roving Mobile Call System (RMCS). Mobile subscribers operating out of range of their home base stations (where they are registered for billing purposes) may originate any class of call via any base station in the system and be billed by the home base station by means of intercommunicating base stations in a Roving Mobile Ticketing System (RMTS). Provision is made for tariff sharing as necessary by participating stations. All call signalling and central signalling is performed out-of-band. Call signalling from any base station to mobiles is common to all radio channels transmitted by that station.

Abstract: In a radio paging system with multiple base stations covering respective geographic areas, subscribers may move freely from area to area and transfer their paging service accordingly by means of a local telephone cell. Radio-transmitted pages are confined to the specific area of the subscriber's whereabouts. Pages are automatically stored while a subscriber is in transit from one area to another. If the subscriber has been paged during the transit period, he is automatically paged when his paging service is transferred upon arrival at his destination. Pages destined for a subscriber who is remotely located are originated in the same manner as if that subscriber were operating locally, i.e. by means of a local telephone call, whether or not the page originator knows the location of the recipient (subscriber). Pages may be originated from any area throughout the system for any subscriber regardless of his location.

Abstract: In a multi-channel mobile radio telephone system with multiple base stations covering different geographical areas, mobiles may move freely from area to area and automatically originate and receive calls to and from a land-switched telephone network by direct dialing to and from anywhere in the system by means of a Roving Mobile Call System (RMCS). Mobile subscribers operating out of range of their home base stations (where they are registered for billing purposes) may originate any class of call via any base station in the system and be billed by the home base station by means of intercommunicating base stations in a Roving Mobile Ticketing System (RMTS). Provision is made for tariff sharing as necessary by participating stations. All call signalling and central signalling is performed out-of-band. Call signalling from any base station to mobiles is common to all radio channels transmitted by that station.