Systems and methods for shaped single carrier orthogonal frequency division multiplexing with low peak to average power ratio
AssigneeSpectral DSP Corp.
InventorFredric J. Harris
Life of this patent
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Abstract
System and methods for shaped single carrier orthogonal frequency division multiplexing with low peak to average power ratio are provided. The system receives an input signal and modulates the input signal to form Dirichlet kernels in a time domain to generate an offset Dirichlet kernel output time array where each Dirichlet kernel has a main lobe and a plurality of side lobes. Modulating the input signal suppresses a peak to average power ratio of the offset Dirichlet kernel output time array by reducing the plurality of side lobes of each Dirichlet kernel and respective amplitudes of the side lobes.
Claims17
A system for modulating a signal, comprising:
- a transceiver;
- and
- a processor in communication with the transceiver, the processor:
- receiving an input signal from the transceiver;
- and
- modulating the input signal to form Dirichlet kernels in a time domain using a Dirichlet kernel filter to generate an offset Dirichlet kernel output time array, each Dirichlet kernel having a main lobe and a plurality of side lobes,
- wherein modulating the input signal suppresses a peak to average power ratio of the offset Dirichlet kernel output time array by reducing the plurality of side lobes of each Dirichlet kernel and respective amplitudes of the side lobes.
A method for modulating a signal comprising the steps of:
- receiving an input signal;
- and
- modulating the input signal to form Dirichlet kernels in a time domain using a Dirichlet kernel filter to generate an offset Dirichlet kernel output time array, each Dirichlet kernel having a main lobe and a plurality of side lobes,
- wherein modulating the input signal suppresses a peak to average power ratio of the offset Dirichlet kernel output time array by reducing the plurality of side lobes of each Dirichlet kernel and respective amplitudes of the side lobes.
A non-transitory computer readable medium comprising instructions stored thereon for modulating a signal which, when executed by a processor of a transceiver, causes the processor to carry out the steps of:
- receiving an input signal;
- and
- modulating the input signal to form Dirichlet kernels in a time domain using a Dirichlet kernel filter to generate an offset Dirichlet kernel output time array, each Dirichlet kernel having a main lobe and a plurality of side lobes,
- wherein modulating the input signal suppresses a peak to average power ratio of the offset Dirichlet kernel output time array by reducing the plurality of side lobes of each Dirichlet kernel and respective amplitudes of the side lobes.
Dependencies are inferred from the claim text.