SUBCARRIER POWER REALLOCATION
First Claim
Patent Images
1. A method comprising:
- identifying, at a transmitter, a first set of subcarriers of a plurality of subcarriers having signal-to-noise ratio (SNR) values that exceed a target SNR value;
identifying a second set of subcarriers having SNR values below the target SNR value; and
iteratively reallocating power from the first and second set of subcarriers to a third set of subcarriers having SNR values below the target SNR value but closer to the target SNR value than the second set of subcarriers.
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Abstract
A first set of subcarriers having signal-to-noise ratio (SNR) values that exceed a target SNR value is identified at a transmitter. A second set of subcarriers having SNR values below the target SNR value is identified. Power is iteratively reallocated from the first and second set of subcarriers to a third set of subcarriers having SNR values below the target value but closer to the target SNR value than the second set of subcarriers.
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Citations
15 Claims
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1. A method comprising:
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identifying, at a transmitter, a first set of subcarriers of a plurality of subcarriers having signal-to-noise ratio (SNR) values that exceed a target SNR value; identifying a second set of subcarriers having SNR values below the target SNR value; and iteratively reallocating power from the first and second set of subcarriers to a third set of subcarriers having SNR values below the target SNR value but closer to the target SNR value than the second set of subcarriers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A wireless transmitter comprising:
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a plurality of antennas to transmit a signal from the transmitter to a receiver, wherein the signal is encoded on a plurality of subcarriers, and wherein at least one antenna is allocated to at least one subcarrier; and a controller to; determine a minimum number of subcarriers to achieve a target signal-to-noise ratio (SNR) value for delivery of the signal using a predetermined modulation and coding rate; identify a first set of subcarriers of a plurality of subcarriers having SNR values that exceed the target SNR value; identify a second set of subcarriers having SNR values that are below the target SNR value; and iteratively reallocate power from the first and second set of subcarriers to a third set of subcarriers having SNR values that are below the target SNR value but closer to the target SNR value than the second set of subcarriers, until at least the minimum number is reached. - View Dependent Claims (10, 11, 12, 13)
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14. A non-transitory computer-readable storage medium comprising instructions that, when executed by a processor of a wireless transmitter, causes the processor to:
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determine a minimum number of subcarriers to achieve a target signal-to-noise ratio (SNR) value for delivery of a signal using a particular modulation and coding rate; identify a first set of subcarriers of a plurality of subcarriers having SNR values that exceed the target SNR value; identify a second set of subcarriers having SNR values that are below the target SNR value; and iteratively reallocate power from the first and second set of subcarriers to a third set of subcarriers having SNR values that are below the target SNR value but closer to the target SNR value than the second set of subcarriers, until at least the minimum number of subcarriers is reached. - View Dependent Claims (15)
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Specification