System, method and apparatus for burst communications
OwnerMehran Mokhtari, Hossein Izadpanahinventors
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Abstract
A communication system for digital communications comprising a transmitter which transmits digital data bits by direct on-off keying of a carrier to producing a burst and a receiver which receives the burst and recovers the digital data transmitted by the burst.
Claims85
A communication system for transmitting and receiving digital data comprising:
- a transmitter transmitting one or more digitally gated carrier waves gated by said digital data and
- a receiver detecting at least one digitally gated carrier wave of the one or more digitally gated carrier waves,
- wherein said receiver determines a state of said digital data by counting cycles of the at least one digitally gated carrier wave of the one or more digitally gated carrier waves.
A method for transmitting and receiving digital data comprising:
- gating one or more carrier waves with said digital data to produce one or more gated carrier waves;
- detecting at least one of said one or more gated carrier waves;
- and
- counting cycles of said at least one gated carrier wave to determine a state of said digital data.
An apparatus for transmitting and receiving digital data comprising:
- means for transmitting one or more gated carrier waves gated by said digital data and
- means for receiving at least one gated carrier wave of the one or more gated carrier waves,
- wherein said means for receiving determines a state of said digital data by counting cycles of the at least one gated carrier wave of the one or more gated carrier waves.
A digital transmitter for transmitting digital data comprising:
- a carrier generator providing one or more carrier signals at selected frequencies;
- a serializer coupled to said digital data and producing a serial stream of digital bits;
- a data edge synchronizer coupled to said serial stream of digital bits and receiving at least one carrier signal of said one or more carrier signals, said data edge synchronizer producing a synchronized stream of digital bits, wherein at least one edge of each digital bit in said synchronized stream of digital bits is synchronized to a specified part of each cycle within said at least one carrier signal;
- and
- a gating circuit gating at least one carrier signal of said one or more carrier signals according to each digital bit in said synchronized stream of digital bits.
A digital receiver for receiving a carrier signal gated by digital data:
- an amplifier receiving said carrier signal and providing an amplified signal;
- a limiting circuit coupled to said amplifier, said limiting circuit receiving said amplified signal and providing a limited signal;
- and
- a divider/counter coupled to said limiting circuit, said divider/counter counting a number of consecutive periods present or absent in said limited signal to provide a digital output.
A method for transmitting digital data comprising:
- generating at least one carrier signal;
- converting said digital data to a stream of serial digital bits;
- synchronizing said stream of serial digital bits to said at least one carrier signal to generate a synchronized stream of digital bits such that at least one edge of each digital bit in said synchronized stream of digital bits is synchronized to a selected part of each cycle within said at least one carrier signal;
- and
- gating said at least one carrier signal according to each digital bit in said synchronized stream of digital bits.
A method for receiving a carrier signal gated by digital data comprising:
- generating a synchronized clock signal based on said carrier signal;
- comparing said carrier signal to said synchronized clock signal;
- counting a number of consecutive periods present in or absent from said carrier signal based on the comparison of said carrier signal to said synchronized clock signal;
- determining a state of a digital bit based on the count of consecutive periods;
- and
- providing a serial stream based on the determined state of each digital bit.
Dependencies are inferred from the claim text.