Multicarrier receivers and methods for detecting cyclic prefixes having unknown lengths
AssigneeIntel Corporation
InventorsSigang Qiu, Minh-Anh Vuong, Atul Salvekar, Xiaoshu Qian
Life of this patent
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Abstract
A multicarrier receiver sequentially correlates two training symbols to determine a length of a cyclic prefix associated with each of the training symbols.
Claims49
A multicarrier receiver comprising:
- a matched filter to apply first reference data to a sampled multicarrier communication signal and to generate a first detection output, the matched filter to further apply second reference data to the sampled multicarrier communication signal after the first detection output to generate a second detection output;
- and
- cyclic prefix detection circuitry to detect a cyclic prefix based on a time-instance associated with the second detection output.
A cyclic prefix detector comprising:
- a matched filter to apply first reference data to a sampled multicarrier communication signal and to generate a first detection output, the matched filter to further apply second reference data to the sampled multicarrier communication signal after the first detection output to generate a second detection output;
- and
- cyclic prefix detection circuitry to detect a cyclic prefix based on a time-instance associated with the second detection output.
A method of detecting a cyclic prefix comprising:
- applying first reference data to a sampled multicarrier communication signal and to generate a first detection output;
- applying second reference data to the sampled multicarrier communication signal in response to the first detection output to generate a second detection output;
- and
- detecting a cyclic prefix based on a time-instance associated with the second detection output.
A method comprising sequentially correlating two multicarrier training symbols to detect a cyclic prefix associated with each of the training symbols.
A system comprising:
- a substantially omnidirectional antenna;
- a multicarrier receiver comprising a matched filter to apply first reference data to a sampled multicarrier communication signal received by the antenna and to generate a first detection output, the matched filter to further apply second reference data to the sampled multicarrier communication signal after the first detection output to generate a second detection output,
- the multicarrier receiver further comprising cyclic prefix detection circuitry to detect a cyclic prefix based on a time-instance associated with the second detection output.
A machine-readable medium that provides instructions, which when executed by one or more processors, cause the processors to perform operations comprising:
- applying first reference data to a sampled multicarrier communication signal and to generate a first detection output;
- applying second reference data to the sampled multicarrier communication signal in response to the first detection output to generate a second detection output;
- and
- detecting a cyclic prefix based on a time-instance associated with the second detection output.
Dependencies are inferred from the claim text.