Interference reduction using variable digital-to-analog converter (DAC) sampling rates
First Claim
Patent Images
1. A method for interference reduction, the method being implemented in a wireless device, the method comprising:
- selecting a sampling frequency for a digital-to-analog converter (DAC) so that images within a DAC output signal do not interfere with one or more receivers, wherein the DAC has an adjustable sampling frequency so as to be operable at a plurality of sampling frequencies; and
adjusting a sample rate of an input signal that is provided to the DAC to match the selected sampling frequency for the DAC.
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Abstract
A method for interference reduction is described. A sampling frequency is selected for a digital-to-analog converter (DAC) so that images within a DAC output signal do not interfere with one or more receivers. A sample rate is adjusted of an input signal that is provided to the DAC to match the sampling frequency for the DAC.
41 Citations
33 Claims
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1. A method for interference reduction, the method being implemented in a wireless device, the method comprising:
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selecting a sampling frequency for a digital-to-analog converter (DAC) so that images within a DAC output signal do not interfere with one or more receivers, wherein the DAC has an adjustable sampling frequency so as to be operable at a plurality of sampling frequencies; and adjusting a sample rate of an input signal that is provided to the DAC to match the selected sampling frequency for the DAC. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A multi-mode modem for a wireless device, comprising:
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a controller that is configured to determine a sampling frequency for a digital-to-analog converter (DAC) so that images within the output signal of the DAC do not interfere with one or more receivers, wherein the DAC has an adjustable sampling frequency so as to be operable at a plurality of sampling frequencies; and an interpolator bank that is configured to increase a sample rate of an input signal that is to be provided as an input to the DAC to match the determined sampling frequency for the DAC. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. An apparatus for interference reduction, comprising:
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means for selecting a sampling frequency for a digital-to-analog converter (DAC) so that images within a DAC output signal do not interfere with one or more receivers, wherein the DAC has an adjustable sampling frequency so as to be operable at a plurality of sampling frequencies; and means for adjusting a sample rate of an input signal that is provided to the DAC to match the selected sample frequency for the DAC.
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33. A computer-program product comprising a non-transitory computer-readable medium having instructions thereon, the instructions comprising:
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code for selecting a sampling frequency for a digital-to-analog converter (DAC) so that images within a DAC output signal do not interfere with one or more receivers, wherein the DAC has an adjustable sampling frequency so as to be operable at a plurality of sampling frequencies; and code for adjusting a sample rate of an input signal that is provided to the DAC to match the selected sample frequency for the DAC.
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Specification