Burst detector
First Claim
1. A burst detection system for detecting a burst in an incoming signal comprising:
- a signal strength change detector for determining strength changes in the incoming signal;
signal strength detection logic for determining if a change in signal strength of a predetermined magnitude has occurred;
a pattern detector for monitoring patterns of symbols in the incoming signal to determine if a predetermined pattern is present; and
a burst detector for signaling a detection of a burst if the signal strength change detection logic determines that a signal strength change of predetermined magnitude has occurred and the pattern detector determines that a predetermined pattern of symbols is present.
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Accused Products
Abstract
A system for detecting a burst in a wireless communications system. A signal strength indicator indicates the strength of an incoming signal representative of incoming packets. A signal strength change detector detects changes in the signal strength of the incoming signal. Signal strength detection logic determines if a change in signal strength of a predetermined magnitude has occurred. A pattern detector detects patterns of symbols, or symbol estimates, in the incoming signal to determine if a predetermined pattern of symbols is present. Burst detection logic signals detection of a burst if the signal strength detection logic determines that a change in signal strength of predetermined magnitude has occurred, and the pattern detector determines that a predetermined pattern of symbols is present.
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Citations
42 Claims
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1. A burst detection system for detecting a burst in an incoming signal comprising:
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a signal strength change detector for determining strength changes in the incoming signal;
signal strength detection logic for determining if a change in signal strength of a predetermined magnitude has occurred;
a pattern detector for monitoring patterns of symbols in the incoming signal to determine if a predetermined pattern is present; and
a burst detector for signaling a detection of a burst if the signal strength change detection logic determines that a signal strength change of predetermined magnitude has occurred and the pattern detector determines that a predetermined pattern of symbols is present. - View Dependent Claims (2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 13, 14, 15, 16, 18, 19, 41)
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7. A burst detection system for detecting a burst in an incoming signal comprising:
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a short-term signal strength change detector for determining short-term signal strength changes in the incoming signal;
a long-term signal strength change detector for determining long-term signal strength changes in the incoming signal;
signal strength change detection logic for determining if a short-term change in signal strength of predetermined magnitude has occurred, and a long-term change of signal strength of predetermined magnitude has occurred;
a pattern detector for monitoring patterns of symbols in the incoming signal to determine if a predetermined pattern is present; and
a burst detector for signaling a detection of a burst if the signal strength change detection logic determines that a short-term signal strength change of predetermined magnitude has occurred, and that a long-term signal strength change of predetermined magnitude has occurred, and the pattern detector signals that a predetermined pattern of symbols is present.
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17. A system for recovering data from an incoming packet represented by an incoming signal, the packet having a preamble and a body, comprising:
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a short-term signal strength change detector for determining short-term signal strength changes in a portion of the incoming signal representing the packet preamble;
a long-term signal strength change detector for determining long-term signal strength changes in the portion of the incoming signal representing the packet preamble;
signal strength change detection logic for determining if a short-term change in signal strength of predetermined magnitude has occurred, and a long-term change of signal strength of predetermined magnitude has occurred;
a pattern detector for monitoring patterns of symbols in the portion of the incoming signal representing the packet preamble to determine if a predetermined pattern is present;
a burst detector for signaling a detection of a burst if the signal strength change detection logic determines that a short-term signal strength change of predetermined magnitude has occurred, and that a long-term signal strength change of predetermined magnitude has occurred, and the pattern detector signals that a predetermined pattern of symbols is present; and
data recovery logic for recovering data in the body of the packet responsive to the detection of a burst by the burst detector.
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20. A burst detection system for detecting a burst in an incoming signal comprising:
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signal strength change detection means for determining strength changes in the incoming signal;
signal strength detection means for determining if a change in signal strength of a predetermined magnitude has occurred;
pattern detection means for monitoring patterns of symbols in the incoming signal to determine if a predetermined pattern is present; and
burst detection means for signaling a detection of a burst if the signal strength change detection logic determines that a signal strength change of predetermined magnitude has occurred and the pattern detector determines that a predetermined pattern of symbols is present.
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21. A method for detecting a burst in an incoming signal comprising:
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monitoring strength changes in the incoming signal to determine if a change in signal strength of a predetermined magnitude has occurred;
monitoring, in parallel with the previous monitoring step, patterns of symbols in the incoming signal to determine if a predetermined pattern is present; and
signaling detection of a burst if a signal strength change of predetermined magnitude has occurred and a predetermined pattern of symbols is present. - View Dependent Claims (22, 23, 28, 29, 30, 31, 32, 33, 34, 35, 37, 38, 40, 42)
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36. A method for recovering data from an incoming packet represented by an incoming signal, the packet having a preamble and a body, comprising:
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monitoring short-term signal strength changes in a portion of the incoming signal representing the packet preamble to determine if a short-term change in signal strength of predetermined magnitude has occurred;
monitoring long-term signal strength changes in the portion of the incoming signal representing the packet preamble to determine if a long-term change in signal strength of predetermined magnitude has occurred;
monitoring patterns of symbols in the portion of the incoming signal representing the packet preamble to determine if a predetermined pattern is present;
performing the foregoing three monitoring steps in parallel;
signaling detection of a burst if a short-term signal strength change of predetermined magnitude has occurred, a long-term change in signal strength of predetermined magnitude has occurred, and a predetermined pattern of symbols is present; and
recovering data in the body of the packet responsive to detection of a burst.
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39. A method for detecting a burst in an incoming signal comprising:
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a step for monitoring strength changes in the incoming signal to determine if a change in signal strength of a predetermined magnitude has occurred;
a step for monitoring patterns of symbols in the incoming signal to determine if a predetermined pattern is present; and
a step for signaling a detection of a burst if a signal strength change of predetermined magnitude has occurred and a predetermined pattern of symbols is present.
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Specification