Inserting and extracting control data using frequency components
First Claim
1. A method for inserting control data in a modulator comprising a plurality of frequency component inputs and a modulator output, the method being performed in the modulator and comprising:
- receiving primary data subcarriers on respective frequency component inputs which are assigned for receiving primary data;
receiving at least one control data subcarrier on a respective frequency component input which is not assigned to primary data;
wherein receiving the at least one control data subcarrier comprises receiving the at least one control data subcarrier on a respective frequency component input for which power needs to be suppressed when transmitted over the air to avoid leakage to a neighbouring frequency band;
combining all frequency component inputs to one output signal; and
providing the output signal on the output for transmission to a demodulator over a point-to-point medium.
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Accused Products
Abstract
A method for inserting control data in a modulator comprising a plurality of frequency component inputs and a modulator output. The method is performed in the modulator and comprises receiving primary data subcarriers on respective frequency component inputs which are assigned for receiving primary data, receiving at least one control data subcarrier on a respective frequency component input which is not assigned to primary data, combining all frequency component inputs to one output signal, and providing the output signal on the output for transmission to a demodulator over a point-to-point medium.
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Citations
18 Claims
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1. A method for inserting control data in a modulator comprising a plurality of frequency component inputs and a modulator output, the method being performed in the modulator and comprising:
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receiving primary data subcarriers on respective frequency component inputs which are assigned for receiving primary data; receiving at least one control data subcarrier on a respective frequency component input which is not assigned to primary data;
wherein receiving the at least one control data subcarrier comprises receiving the at least one control data subcarrier on a respective frequency component input for which power needs to be suppressed when transmitted over the air to avoid leakage to a neighbouring frequency band;combining all frequency component inputs to one output signal; and providing the output signal on the output for transmission to a demodulator over a point-to-point medium. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A modulator for inserting control data, the modulator comprising:
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a plurality of frequency component inputs; a modulator output; a processor; and a memory storing instructions that, when executed by the processor, cause the modulator to; receive primary data subcarriers on respective frequency component inputs which are assigned for receiving primary data; receive at least one control data subcarrier on a respective frequency component input which is not assigned to primary data;
wherein the instructions to receive at least one control data subcarrier comprise instructions that, when executed by the processor, cause the modulator to receive the at least one control data subcarrier on a respective frequency component input for which power needs to be suppressed when transmitted over the air to avoid leakage to a neighbouring frequency band;combine all frequency component inputs to one output signal; and provide the output signal on the output for transmission to a demodulator over a point-to-point medium. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A method for extracting control data in a demodulator comprising a plurality of frequency component outputs and a demodulator input, the method being performed in the demodulator and comprising:
- receiving one input signal on the input, the input signal having been transferred from a modulator over a point-to-point medium;
separating frequency components of the input signal to the plurality of subcarriers for respective frequency component outputs; providing primary data subcarriers on respective frequency component outputs which are assigned for providing primary data; and providing at least one control data subcarrier on a respective frequency component output which is not assigned to primary data;
wherein providing the at least one control data subcarrier comprises providing the at least one control data subcarrier on a respective frequency component input for which power needs to be suppressed when transmitted over the air to avoid leakage to a neighbouring frequency band. - View Dependent Claims (14, 15, 16, 17, 18)
- receiving one input signal on the input, the input signal having been transferred from a modulator over a point-to-point medium;
Specification