Communications systems and methods
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Accused Products
Abstract
This invention generally relates to wired and wireless ultra wideband (UWB) data communications apparatus and methods, and in particular to UWB receiver systems and architectures, and to training and synchronisation systems therefore. An ultra wideband (UWB) receiver system comprising: a front end to receive a UWB signal; a reference signal memory for storing a reference UWB signal; a correlator coupled to said front end and to said reference signal memory to correlate said received UWB signal with said reference UWB signal; and a controller coupled to said reference signal memory and configured to control the storage of a received UWB signal into said reference signal memory as said reference UWB signal.
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Citations
52 Claims
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1-24. -24. (canceled)
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25. An ultra wideband (UWB) receiver system comprising:
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a front end to receive a UWB signal;
a reference signal memory for storing a reference UWB signal comprising a digitized wave shape of a received UWB signal for correlation with a plurality of later received UWB signals;
a digital correlator coupled to said front end and to said reference signal memory to digitally correlate said received UWB signal with said digitized wave shape of said reference UWB signal; and
a controller coupled to said reference signal memory and configured to control the storage of a received UWB signal into said reference signal memory as said reference UWB signal for correlation with said plurality of later received UWB signals. - View Dependent Claims (26, 27, 28, 29, 30, 49)
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31. A method of detecting a UWB signal, the method comprising:
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receiving a first UWB signal;
storing a digitized wave shape of said first UWB signal;
receiving a plurality of second, later UWB signals; and
digitally correlating said plurality of second, later UWB signals with said stored digitized wave shape of said first UWB signal to detect said second UWB signals. - View Dependent Claims (32, 33, 34, 35, 50)
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36. An ultra wideband (UWB) receiver system comprising:
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a front end to receive a UWB signal;
a reference signal memory for storing a reference UWB signal comprising a digitized wave shape of a received UWB signal for correlation with a plurality of later received UWB signals;
a digital correlator coupled to said front end and to said reference signal memory to digitally correlate said received UWB signal with said digitized wave shape of reference UWB signal; and
wherein said received UWB signal stored in said reference signal memory comprises a plurality of multipath components - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 51)
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44. A UWB receiver comprising:
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means for receiving a first UWB signal;
means for storing a digitized wave shape of a first UWB signal;
means for receiving a plurality of second, later UWB signals; and
means for digitally correlating said plurality of second, later UWB signals with said stored digitized wave shape of said first UWB signal to detect said second UWB signals. - View Dependent Claims (45, 52)
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46. A synchronisation system for a UWB receiver, the receiver having a receiver front end for receiving a UWB signal coupled to a correlator, said correlator having a plurality of multiply-accumulate arms and a reference signal store coupled to said correlator, the synchronisation system comprising:
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a control processor coupled to said multiply-accumulate arms to receive UWB signal data, and coupled to said reference signal store to write reference signal data into said store for correlation; and
a clock generator for generating a clock under control of said control processor to control provision of reference signal data form said reference signal store to said correlator. - View Dependent Claims (47)
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48. A carrier carrying processor control code for a control processor of a synchronisation system for a UWB receiver, the receiver having a receiver front end for receiving a UWB signal coupled to a correlator, the correlator having a plurality of multiply-accumulate arms and a reference signal store coupled to said correlator, the synchronisation system comprising a control processor coupled to said multiply-accumulate arms to receive UWB signal data, and coupled to said reference signal store to write reference signal data into said store for correlation, and a clock generator for generating a clock under control of said control processor to control provision of reference signal data form said reference signal store to said correlator;
the control code being configured to, when running, control said control processor to locate a reference portion of a said UWB signal and to write data into said reference signal store derived from said located reference portion of said UWB signal.
Specification