Apparatuses and methods for generating a radio frequency signal, a modulator, a controller for a modulator, and a method for controlling a modulator
AssigneeIntel IP Corporation
InventorAndreas Menkhoff
Life of this patent
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Abstract
An apparatus for generating a radio frequency signal is provided. The apparatus includes a modulator configured to generate the radio frequency signal based on an input signal. Further, the apparatus includes a controller configured to control the modulator to generate the radio frequency signal using polar modulation, if the input signal has a first characteristic. The controller is configured to control the modulator to generate the radio frequency signal using quadrature modulation, if the input signal has a different second characteristic.
Claims23
An apparatus for generating a radio frequency signal, comprising:
- a modulator configured to generate the radio frequency signal based on an input signal;
- and
- a controller configured to control the modulator to generate the radio frequency signal using polar modulation, if the input signal has a first characteristic,
- wherein the controller is configured to control the modulator to generate the radio frequency signal using quadrature modulation, if the input signal has a different second characteristic
- wherein the first characteristic indicates that a sample of the input signal is located in a first region of a constellation diagram, and wherein the second characteristic indicates that the sample is located in a different second region of the constellation diagram.
An apparatus for generating a radio frequency signal, comprising:
- a modulator configured to generate the radio frequency signal based on a plurality of samples;
- and
- a control unit configured to control the modulator to generate the radio frequency signal using quadrature modulation for a first sequence of the samples,
- wherein the control unit is configured to control the modulator to generate the radio frequency signal using polar modulation for a second sequence of the samples, the second sequence of the samples directly succeeding the first sequence of the samples,
- wherein the control unit is configured to calculate a phase of the last sample of the first sequence, and
- wherein the control unit is configured to calculate a carrier frequency of the radio frequency signal for the first sequence based on the phase of the last sample of the first sequence.
A method for generating a radio frequency signal, comprising:
- generating the radio frequency signal based on an input signal using a modulator;
- controlling the modulator to generate the radio frequency signal using polar modulation, if the input signal has a first characteristic;
- and
- controlling the modulator to generate the radio frequency signal using quadrature modulation, if the input signal has a different second characteristic,
- wherein the first characteristic indicates that a sample of the input signal is located in a first region of a constellation diagram, and wherein the second characteristic indicates that the sample is located in a different second region of the constellation diagram.
A method for generating a radio frequency signal, comprising:
- generating the radio frequency signal based on a plurality of samples using a modulator;
- controlling the modulator to generate the radio frequency signal using quadrature modulation for a first sequence of the samples;
- controlling the modulator to generate the radio frequency signal using polar modulation for a second sequence of the samples, the second sequence of the samples directly succeeding the first sequence of the samples;
- calculating a phase of the last sample of the first sequence;
- and
- calculating a carrier frequency of the radio frequency signal for the first sequence based on the phase of the last sample of the first sequence.
Dependencies are inferred from the claim text.