Apparatus, system and method for flip modulation in an impulse radio communications system
First Claim
1. An impulse radio transmitter, comprising:
- a precision timing generator to receive a periodic timing signal and an information signal and to produce one of a first signal and a second signal based on said information signal and said periodic timing signal;
a first pulser to receive said first signal and to produce, in response to said first signal, a first impulse radio signal consisting of a first type of impulse waveform;
a second pulser to receive said second signal and to produce, in response to said second signal, a second impulse radio signal consisting of a second type of impulse waveform, wherein said second type of impulse waveform is substantially an inverse of said first type of impulse waveform; and
a combiner to combine said first impulse radio signal and said second impulse radio signal and thereby produce a flip modulated impulse radio signal.
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Accused Products
Abstract
Apparatuses, systems and methods for transmitting and receiving modulated impulse radio signals. An impulse radio receiver includes a time base, a precision timing generator, a template generator, a delay, first and second correlators, a data detector and a time base adjustor. The time base produces a periodic timing signal that is used by the precision timing generator to produce a timing trigger signal. The template generator uses the timing trigger signal to produce a template signal. A delay receives the template signal and outputs a delayed template signal. When an impulse radio signal is received, the first correlator correlates the received impulse radio signal with the template signal to produce a first correlator output signal, and the second correlator correlates the received impulse radio signal with the delayed template signal to produce a second correlator output signal. The data detector produces a data signal based on at least the first correlator output signal. The time base adjustor produces a time base adjustment signal based on at least the second correlator output signal. The time base adjustment signal is used to synchronize the time base with the received impulse radio signal.
149 Citations
80 Claims
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1. An impulse radio transmitter, comprising:
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a precision timing generator to receive a periodic timing signal and an information signal and to produce one of a first signal and a second signal based on said information signal and said periodic timing signal;
a first pulser to receive said first signal and to produce, in response to said first signal, a first impulse radio signal consisting of a first type of impulse waveform;
a second pulser to receive said second signal and to produce, in response to said second signal, a second impulse radio signal consisting of a second type of impulse waveform, wherein said second type of impulse waveform is substantially an inverse of said first type of impulse waveform; and
a combiner to combine said first impulse radio signal and said second impulse radio signal and thereby produce a flip modulated impulse radio signal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An impulse radio transmitter, comprising:
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a precision timing generator to receive a periodic timing signal and an information signal and to produce, based on said information signal and said periodic signal, a first signal, a delayed first signal, a second signal, and a delayed second signal;
a first pulser to produce a first impulse radio signal, in response to said first signal, and a delayed first impulse radio signal, in response to said delayed first signal, wherein said first impulse radio signal and said delayed first impulse radio signal consist of a first type of impulse waveform;
a second pulser to produce a second impulse radio signal, in response to said second signal, and a delayed second impulse radio signal, in response to said delayed second signal, wherein said second impulse radio signal and said delayed second impulse radio signal consist of a second type of impulse waveform, wherein said second type of impulse waveform is substantially an inverse of said first type of impulse waveform; and
a combiner to combine at least one of said first impulse radio signal and said delayed first impulse radio signal with at least one of said second impulse radio signal and said delayed second impulse radio signal, and thereby produce a flip modulated impulse radio signal. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method for transmitting impulse radio signals, comprising the steps of:
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a. producing a first signal and a second signal using a periodic timing signal and an information signal;
b. producing, in response to said first signal, a first impulse radio signal consisting of a first type of impulse waveform;
c. producing, in response to said second signal, a second impulse radio signal consisting of a second type of impulse waveform, wherein said second type of impulse waveform is substantially an inverse of said first type of impulse waveform; and
d. combining said first impulse radio signal and said second impulse radio signal to thereby produce a flip modulated impulse radio signal. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. A method for transmitting impulse radio signals, comprising the steps of:
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a. producing a first signal, a delayed first signal, a second signal, and a delayed second signal using periodic timing signal and an information signal;
b. producing, in response to said first signal, a first impulse radio signal consisting of a first type of waveform;
c. producing, in response to said delayed first signal, a delayed first impulse radio signal consisting of said first type of waveform;
d. producing, in response to said second signal, a second impulse radio signal consisting of a second type of waveform, wherein said second type of impulse waveform is substantially an inverse of said first type of impulse waveform;
e. producing, in response to said delayed second signal, a delayed second impulse radio signal consisting of said second type of waveform; and
f. combining at least one of said first impulse radio signal and said delayed first impulse radio signal with at least one of said second impulse radio signal and said delayed second impulse radio signal, thereby producing a flip modulated impulse radio signal. - View Dependent Claims (23, 24, 25, 26, 27, 28)
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29. A method for generating an impulse radio signal, comprising:
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triggering at least one first pulser that generates at least one first impulse radio waveform in accordance with one of a plurality of states of an information signal; and
triggering at least one second pulser that generates at least one second impulse radio waveform in accordance with another one of the plurality of states of the information signal, wherein the at least one first impulse radio waveform and the at least one second impulse radio waveform are not generated at the same time. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36)
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37. A method for generating an impulse radio signal, comprising:
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enabling at least one first pulser that generates at least one first impulse radio waveform in accordance with one of a plurality of states of an information signal; and
enabling at least one second pulser that generates at least one second impulse radio waveform in accordance with another one of the plurality of states of the information signal, wherein the at least one first impulse radio waveform and the at least one second impulse radio waveform are not generated at the same time. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44)
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45. A method of generating an impulse radio signal, comprising:
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timing at least one first trigger signal to trigger at least one first pulser that generates at least one first impulse radio waveform in accordance with one state of an information signal;
timing at least one second trigger signal to trigger at least one second pulser that generates at least one second impulse radio waveform in accordance with another state of the information signal, wherein the at least one first impulse radio waveform and the at least one second impulse radio waveform are not generated at the same time. - View Dependent Claims (46, 47, 48, 49, 50, 51, 52)
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53. An apparatus for generating an impulse radio signal, comprising:
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at least one first pulser that generates at least one first impulse radio waveform in accordance with one of a plurality of states of an information signal;
at least one second pulser that generates at least one second impulse radio waveform in accordance with another state of the plurality of states of the information signal;
a first trigger signal generator for triggering the at least one first pulser; and
a second trigger signal generator for triggering the at least one second pulser, wherein the at least one first impulse radio waveform and the at least one second impulse radio waveform are not generated at the same time. - View Dependent Claims (54, 55, 56, 57, 58, 59, 60, 61)
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62. An apparatus for generating an impulse radio signal, comprising:
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at least one first pulser that generates at least one first impulse radio waveform in accordance with one of a plurality of states of an information signal;
at least one second pulser that generates at least one second impulse radio waveform in accordance with another one of the plurality of states of the information signal;
a first enable signal generator that enables the at least one first pulse; and
a second enable signal generator that enables the at least one second pulser, wherein the at least one first impulse radio waveform and the at least one second impulse radio waveform are not generated at the same time. - View Dependent Claims (63, 64, 65, 66, 67, 68, 69, 70, 71)
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72. An apparatus for generating an impulse radio signal, comprising:
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at least one first pulser that generates at least one first impulse radio waveform in accordance with one state of an information signal;
at least one second pulser that generates at least one second impulse radio waveform in accordance with another state of the information signal;
a first timing circuit for timing at least one first trigger signal to trigger the at least one first pulser; and
a second timing circuit for timing at least one second trigger signal to trigger the at least one second pulser, wherein the at least one first impulse radio waveform and the at least one second impulse radio waveform are not generated at the same time. - View Dependent Claims (73, 74, 75, 76, 77, 78, 79, 80)
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Specification