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US 2025/0088576 A1Published application
Building, transmitting, and receiving frame structures in power line communications
AssigneeTexas Instruments Incorporated
InventorsAnand G. Dabak, Badri N Varadarajan, Il Han Kim, Tarkesh Pande
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Abstract
Methods for building, transmitting, and receiving frame structures in power line communications (PLC) are described. Various techniques described herein provide a preamble design using one or more symbols. One or more preamble symbols may be interspersed within a header portion of a PLC frame to facilitate estimation of a frame boundary and/or sampling frequency offset, for example, in the presence of impulsive noise.
Claims22
A method comprising:
- generating a chirp sequence having a bandwidth selected based on subtracting an excess bandwidth parameter from a low nominal frequency and adding the excess bandwidth parameter to a high nominal frequency;
- extracting a phase angle of a frequency-domain version of the chirp sequence to obtain a flattened frequency spectrum;
- creating a phase quantized sequence based on the flattened frequency spectrum;
- generating a preamble portion of a first frame based on the phased quantized sequence;
- and
- transmitting the first frame using a transmitter of a device.
3 more elements
A device comprising:
- an interface;
- and
- a processor configured to:
- generate a chirp sequence having a bandwidth selected based on subtracting an excess bandwidth parameter from a low nominal frequency and adding the excess bandwidth parameter to a high nominal frequency;
- extract a phase angle of a frequency-domain version of the chirp sequence to obtain a flattened frequency spectrum;
- create a phase quantized sequence based on the flattened frequency spectrum;
- generate a preamble portion of a first frame based on the phased quantized sequence;
- and
- transmit the first frame using the interface.
6 more elements
Dependencies are inferred from the claim text.