Delta-sigma modulation apparatus, delta-sigma modulation method and recording medium
AssigneeNEC Corporation
InventorMasaaki Tanio
Life of this patent
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Abstract
A delta-sigma modulation apparatus performs delta-sigma modulation on a first signal as an input signal and outputs a second signal; learns a parameter for a transmission path distortion model using the second signal and a third signal generated through a transmission path of the second signal; inputs the second signal to the transmission path distortion model and outputs a fourth signal that is an approximated value of a signal which is generated through at least part of the transmission path of the second signal, and performs the delta-sigma modulation on the first signal using the fourth signal and outputs the second signal.
Claims10
A delta-sigma modulation apparatus comprising:
- one or more memories storing instructions;
- and
- one or more processors configured to execute the instructions to
- perform delta-sigma modulation on a first signal as an input signal, and output a second signal;
- learn a parameter for a transmission path distortion model including at least a mixture model and a filter structure, using the second signal and a third signal generated through a transmission path of the second signal;
- and
- input the second signal to the transmission path distortion model, and output a fourth signal that is an approximated value of a signal which is generated through at least part of the transmission path of the second signal,
- wherein the one or more processors are further configured to execute the instructions to perform the delta-sigma modulation on the first signal using the fourth signal, and output the second signal.
A delta-sigma modulation method comprising:
- performing delta-sigma modulation on a first signal as an input signal, and outputting a second signal;
- learning a parameter for a transmission path distortion model including at least a mixture model and a filter structure, using the second signal and a third signal generated through a transmission path of the second signal;
- inputting the second signal to the transmission path distortion model, and outputting a fourth signal that is an approximated value of a signal which is generated through at least part of the transmission path of the second signal;
- and
- performing the delta-sigma modulation on the first signal using the fourth signal, and outputting the second signal.
A non-transitory computer-readable recording medium having recorded thereon a program causing a processor to perform:
- performing delta-sigma modulation on a first signal as an input signal, and outputting a second signal;
- learning a parameter for a transmission path distortion model including at least a mixture model and a filter structure, using the second signal and a third signal generated through a transmission path of the second signal;
- inputting the second signal to the transmission path distortion model, and outputting a fourth signal that is an approximated value of a signal which is generated through at least part of the transmission path of the second signal;
- and
- performing the delta-sigma modulation on the first signal using the fourth signal, and outputting the second signal.
Dependencies are inferred from the claim text.