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AssigneeNational Instruments Corporation
InventorsMax Koehler, Achim Nahler, Amal Ekbal
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Techniques are disclosed relating to detection of wireless signals. In some embodiments, a method includes generating an autocorrelation result for a training field in a received wireless message, generating differentiation information based on the autocorrelation result, and determining that one or more signal recognition criteria are met. In some embodiments, the signal recognition criteria include a first criterion that a first peak in the differentiation information satisfies a first threshold for at least a first time interval. In some embodiments, the signal recognition criteria include one or more additional criteria, including a second criterion that a second peak in the differentiation information satisfies a second threshold for at least a second time interval, wherein the first and second peaks have different polarities and/or a third criterion that the first peak corresponds to an autocorrelation result value that is below a particular autocorrelation threshold.
A method, comprising:
An apparatus, comprising wireless circuitry configured to:
A non-transitory computer-readable medium having instructions stored thereon that are executable by a computing device to perform operations comprising:
Dependencies are inferred from the claim text.
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Synchronisation arrangements: detecting errors in frequency or phase
Symbol synchronisation: coarse synchronisation, e.g. by correlation
Characterised by the domain of operation: time domain
Characterised by synchronisation parameters: pilot or known symbols
About 8 years 8 months of term left · ends 16 Jun 2035 (estimated)
Technical Field
This disclosure relates to wireless signal detection using autocorrelation.
Description of the Related Art
FIG. 1A is a block diagram illustrating an exemplary wireless baseband transmitter, according to some embodiments.
FIG. 1B is a block diagram illustrating an exemplary wireless baseband receiver, according to some embodiments.
FIG. 2 is a signal diagram illustrating an exemplary 802.11 burst structure, according to some embodiments.
This specification includes references to “one embodiment” or “an embodiment.” The appearances of the phrases “in one embodiment” or “in an embodiment” do not necessarily refer to the same embodiment. Particular features, structures, or characteristics may be combined in any suitable manner consistent with this disclosure.
Various units, circuits, or other components may be described or claimed as “configured to” perform a task or tasks. In such contexts, “configured to” is used to connote structure by indicating that the units/circuits/components include structure (e.g., circuitry) that performs the task or tasks during operation. As such, the unit/circuit/component can be said to be configured to perform the task even when the specified unit/circuit/component is not currently operational (e.g., is not on). The units/circuits/components used with the “configured to” language include hardware—for example, circuits, memory storing program instructions executable to implement the operation, etc. Reciting that a unit/circuit/component is “configured to” perform one or more tasks is expressly intended not to invoke 35 U.S.C. §112(f) for that unit/circuit/component.
Acronyms