Method and system for fast acquisition of ultra-wideband signals
First Claim
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1. A method for detecting an ultra wideband signal, comprising the steps of:
- (a) establishing a plurality of time offsets between a transmitter clock and a receiver clock in accordance with a search strategy;
(b) obtaining a received ultra wideband signal;
(c) comparing respective parameters of the received ultra wideband signal corresponding to the plurality of time offsets to an acceptance criterion; and
(d) if each respective parameter fails to meet the acceptance criterion, returning to step (a), and if any respective parameter meets the acceptance criterion, locking on the received ultra wideband signal in accordance with the time offset corresponding to the respective parameter that meets the acceptance criteria.
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Abstract
A system and method are provided that can detect any part of a multipath impulse radio signal. More specifically, the method compares a template pulse train and the multipath impulse radio signal to obtain a comparison result. The system performs a threshold check on the comparison result. If the comparison result passes the threshold check, the system locks onto any part of the multipath impulse radio signal including a direct path part and at least one multipath reflection part. The system may also perform a quick check, a sychronization check, and/or a command check of the multipath impulse radio signal.
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Citations
64 Claims
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1. A method for detecting an ultra wideband signal, comprising the steps of:
- (a) establishing a plurality of time offsets between a transmitter clock and a receiver clock in accordance with a search strategy;
(b) obtaining a received ultra wideband signal;
(c) comparing respective parameters of the received ultra wideband signal corresponding to the plurality of time offsets to an acceptance criterion; and
(d) if each respective parameter fails to meet the acceptance criterion, returning to step (a), and if any respective parameter meets the acceptance criterion, locking on the received ultra wideband signal in accordance with the time offset corresponding to the respective parameter that meets the acceptance criteria. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
- (a) establishing a plurality of time offsets between a transmitter clock and a receiver clock in accordance with a search strategy;
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32. A method for detecting an ultra wideband signal, comprising the steps of:
- (a) establishing a plurality of time offsets between a transmitter clock and a receiver clock in accordance with a search strategy;
(b) obtaining a received ultra wideband signal;
(c) comparing respective parameters of the received ultra wideband signal corresponding to the plurality of time offsets to an acceptance criterion and if each respective parameter fails to meet the acceptance criterion, returning to step (a); and
if any respective parameter meets the acceptance criteria (d) locking on the received ultra wideband signal in accordance with the time offset corresponding to the respective parameter that meets the acceptance criteria;
(e) performing a quick check using a template signal and additional received ultra wideband signal; and
if the additional received ultra wideband signal fails the quick check, returning to step (a);
(f) performing a synchronization check of further received ultra wideband signal;
if the further received ultra wideband signal fails the synchronization check, returning to step (a); and
if the further received ultra wideband signal passes the synchronization check, obtaining acquisition data comprising synchronization data and command data from the ultra wideband signal; and
(g) performing a command check of the command data;
if the command data fails the command check, returning to step (a); and
if the command data passes the command check, acquiring the ultra wideband signal.
- (a) establishing a plurality of time offsets between a transmitter clock and a receiver clock in accordance with a search strategy;
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33. A system for detecting an ultra wideband signal, comprising:
- means for establishing a plurality of time offsets between a transmitter clock and a receiver clock in accordance with a search strategy;
means for obtaining a received ultra wideband signal;
means for comparing a respective parameter of the received ultra wideband signal corresponding to each of the plurality of time offsets to an acceptance criterion; and
means for locking on the received ultra wideband signal in accordance with the time offset corresponding to any respective parameter that meets the acceptance criteria. - View Dependent Claims (34, 35, 36)
- means for establishing a plurality of time offsets between a transmitter clock and a receiver clock in accordance with a search strategy;
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37. A method for detecting an ultra wideband signal, said method comprising the steps of:
- receiving the ultra wideband signal;
establishing a plurality of time offsets between a transmitter clock and a receiver clock in accordance with a search strategy; and
locking onto the ultra wideband signal when a respective parameter of the received ultra wideband signal corresponding to one of the plurality of time offsets meets an acceptance criterion. - View Dependent Claims (38, 39, 40, 41, 42)
- receiving the ultra wideband signal;
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43. A method for detecting an ultra wideband signal, said method comprising the steps of:
- (a) obtaining a received ultra wideband signal;
(b) comparing respective parameters of the received ultra wideband signal corresponding to a plurality of time offsets between a transmitter clock and a receiver clock to an acceptance criterion;
(c) locking onto the received ultra wideband signal if any respective parameter meets an acceptance criterion;
otherwise (d) establishing another plurality of time offsets between the transmitter clock and the receiver clock in accordance with a search strategy and repeating step (b). - View Dependent Claims (44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64)
- (a) obtaining a received ultra wideband signal;
Specification