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US 2021/0288691 A1Published application
Robust mode for power line communications
AssigneeTexas Instruments Incorporated
InventorsII Han Kim, Tarkesh Pande, Anuj Batra
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Abstract
Embodiments include methods of powerline communications using a preamble with band extension is provided. A method may include receiving a packet data unit PDU. Bit-level repetition is applied to at least a portion of the PDU to create a repeated portion. Interleaving is performed per a subchannel. Pilot tones are inserted in the interleaved portion. Each data tone is modulated with respect to a nearest one of the inserted pilot tones. The PDU is transmitted over a power line.
Claims20
A method comprising:
- performing a cyclic redundancy check (CRC) on a packet data unit (PDU);
- encoding the PDU to produce an encoded PDU signal;
- interleaving the encoded PDU signal to produce an interleaved signal;
- applying subcarrier modulation to the interleaved signal to produce a modulated signal;
- applying an inverse fast Fourier transform (IFFT) to the modulated signal;
- and
- transmitting a signal based on a result of applying the IFFT to the modulated signal.
4 more elements
A device comprising:
- a processor;
- a transmitter coupled to the processor;
- and
- a non-transitory memory coupled to the processor and storing instructions that, when executed, cause the processor to:
- receive a packet data unit (PDU);
- apply convolutional encoding to the PDU;
- when the PDU is associated with a robust mode, perform repetition on at least a portion of the PDU;
- when the PDU is associated with a mode other than the robust mode, omit performing repetition on the PDU;
- interleave the PDU;
- apply subcarrier modulation to the PDU;
- apply an inverse fast Fourier transform (IFFT) to the PDU;
- and
- cause the transmitter to transmit the PDU.
10 more elements
Dependencies are inferred from the claim text.