Ultra-wideband pulse and ultra-wideband pulse-based ranging
AssigneeStichting IMEC Nederland
InventorsChris Marshall, Erwin Allebes, Minyoung Song, Elbert Betchthum
Life of this patent
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Abstract
A method for generating an ultra-wideband signal is provided. The method comprises the steps of generating at least one ultra-wideband pulse envelope comprising a main pulse and a precursor pulse, the precursor pulse being shorter in length and lower in amplitude compared to the main pulse, and modulating a carrier signal in amplitude such that the envelope corresponds to the at least one ultra-wideband pulse envelope and such that the carrier signal within the main pulse is phase-shifted with respect to the carrier signal within the precursor pulse.
Claims20
A method for generating an ultra-wideband signal comprising:
- generating at least one ultra-wideband pulse envelope comprising a main pulse and a precursor pulse, the precursor pulse being shorter in length and lower in amplitude compared to the main pulse, and
- modulating a carrier signal in amplitude such that the envelope corresponds to the at least one ultra-wideband pulse envelope and such that the carrier signal within the main pulse is phase-shifted with respect to the carrier signal within the precursor pulse.
An ultra-wideband transmitter comprising:
- an envelope generator, and
- a carrier signal generator,
- wherein the envelope generator is configured to generate at least one ultra-wideband pulse envelope comprising a main pulse and a precursor pulse, the precursor pulse being shorter in length and lower in amplitude compared to the main pulse, and
- wherein the carrier signal generator is configured to modulate a carrier signal in amplitude such that the envelope corresponds to the at least one ultra-wideband pulse envelope and such that the carrier signal within the main pulse is phase-shifted with respect to the carrier signal within the precursor pulse.
The ultra-wideband transmitter of 13,
- wherein the envelope generator is configured to receive unit pulses corresponding to a predefined amplitude code and a predefined phase code, and
- wherein the pulse shaping unit comprises a first pulse shaping path and a second pulse shaping path, the first pulse shaping path and the second pulse shaping path being time-interleaved, preferably time-interleaved by one chip period, with respect to the unit pulses corresponding to the amplitude code, thereby generating time-interleaved pulse envelopes of the unit pulses corresponding to the amplitude code.
Dependencies are inferred from the claim text.