Communications systems and methods
First Claim
1. An ultra wideband (UWB) receiver system comprising:
- a receiver front end to receive a UWB signal having a plurality of multipath components;
wherein said UWB signal comprises a plurality of pulses;
wherein each of said pulses has a plurality of multipath components;
a digital correlator coupled to said receiver front end to digitally correlate each of said plurality of UWB signal pulses with differently delayed versions of a digital reference signal waveshape;
wherein said reference signal waveshape comprises an average over a plurality of the received pulses and comprises a plurality of multipath components of each of said pulses; and
wherein said digital correlator comprises at least one digital correlator module, said at least one correlator module being configured to correlate a plurality of said multipath components of each said pulse with said reference signal waveshape.
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Accused Products
Abstract
Described herein are ultra wideband (UWB) receiver systems, and applications thereof. Such a UWB receiver includes a receiver front end and a correlator coupled to the receiver front end. The receiver front end is configured to receive a UWB signal having a plurality of multipath components. The correlator is configured to correlate the UWB signal with a reference signal. The UWB signal includes a plurality of pulses, wherein each pulse has a plurality of multipath components. The reference signal also includes a plurality of multipath components of the pulse. The correlator includes at least one correlator module configured to correlate a plurality of the multipath components of the pulse with the reference signal.
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Citations
20 Claims
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1. An ultra wideband (UWB) receiver system comprising:
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a receiver front end to receive a UWB signal having a plurality of multipath components; wherein said UWB signal comprises a plurality of pulses; wherein each of said pulses has a plurality of multipath components; a digital correlator coupled to said receiver front end to digitally correlate each of said plurality of UWB signal pulses with differently delayed versions of a digital reference signal waveshape; wherein said reference signal waveshape comprises an average over a plurality of the received pulses and comprises a plurality of multipath components of each of said pulses; and wherein said digital correlator comprises at least one digital correlator module, said at least one correlator module being configured to correlate a plurality of said multipath components of each said pulse with said reference signal waveshape. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A UWB receiver system, comprising:
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a receiver front end to receive a UWB signal; wherein said UWB signal comprises a plurality of pulses; and a digital correlator coupled to said receiver front end to digitally correlate each of said plurality of pulses with differently delayed versions of a digital reference signal waveshape, wherein said digital reference signal waveshape comprises an average over a plurality of the received pulses; wherein said correlator comprises a plurality of correlation modules to perform a plurality of correlations substantially in parallel between said UWB signal and successively delayed versions of said digital reference signal waveshape to locate each said pulse. - View Dependent Claims (12, 13, 14)
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15. A method of demodulating a UWB signal having a plurality of multipath components, the method comprising:
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receiving said UWB signal, wherein said UWB signal comprises a plurality of pulses; digitally correlating said plurality of pulses including said multipath components with differently delayed versions of a digital reference signal waveshape including a plurality of multipath components to provide a digital correlation value including correlation contributions for said multipath components, wherein said digital reference signal waveshape comprises an average over a plurality of the received pulses; and demodulating said UWB signal responsive to said digital correlation value. - View Dependent Claims (16, 17)
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18. A UWB receiver for demodulating a UWB signal having a plurality of multipath components, the receiver comprising:
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means for receiving said UWB signal, wherein said UWB signal comprises a plurality of pulses; means for digitally correlating said plurality of pulses including said multipath components with differently delayed versions of a digital reference signal waveshape including a plurality of multipath components to provide a digital correlation value including correlation contributions for said multipath components, wherein said digital reference signal waveshape comprises an average over a plurality of the received pulses; and demodulating said UWB signal responsive to said digital correlation value.
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19. An ultra wideband (UWB) receiver system, comprising:
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a receiver front end configured to receive a UWB signal having a plurality of multipath components, the UWB signal comprising a plurality of pulses, each the plurality of pulses having a plurality of multipath components; a digital correlator coupled to the receiver front end and configured to digitally correlate each of the plurality of UWB signal pulses with a common digital reference signal waveshape, such that the reference signal waveshape comprises a plurality of multipath components of the pulse, the digital correlator comprising at least one digital correlator module, the correlator module being configured to correlate a plurality of the multipath components of the pulse with the reference signal waveshape; a memory coupled to the at least one correlator module and configured to store a partial correlation result and to provide a stored partial correlation result to the correlator module; and a multiplexer configured to time multiplex the correlator module for correlating pulses having time overlapping multipath components by summing partial correlations of the UWB signal and the digital reference signal waveshape.
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20. A method of demodulating a UWB signal having a plurality of multipath components, the method comprising:
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receiving a plurality of the UWB signals; digitally correlating the plurality of UWB signals including the multipath components with a digital reference signal waveshape including a plurality of multipath components to provide a digital correlation value including correlation contributions for the multipath components; demodulating the UWB signal responsive to the digital correlation value, the UWB signal comprises a plurality of pulses having interleaved multipath components; and interleaving correlating of the multipath components of the UWB and reference signals to determine a correlation value for each of the UWB signal pulses having an interleaved multipath component.
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Specification