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US 11,082,541 B2Granted
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.
Claims15
A method comprising:
- identifying, by a power line communication (PLC) device, a first PLC symbol and a second PLC symbol within a PLC preamble;
- inserting, by the PLC device, an instance of the first PLC symbol within a PLC header portion of a first PLC frame;
- inserting, by the PLC device, an instance of the second PLC symbol within the PLC header portion of the first PLC frame;
- transmitting, by the PLC device, the first PLC frame over a power line;
- receiving a second PLC frame;
- locating a position of a PLC preamble symbol within a header portion of the second PLC frame;
- and
- estimating a sampling frequency offset based on the located position of the PLC preamble symbol.
5 more elements
Dependencies are inferred from the claim text.