Pulse waveform producing method
AssigneesYokohama TLO Company, Ltd., Ryuji Kohno
InventorRyuji Kohno
Life of this patent
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Abstract
The present invention forms, in UWB communications in which a pulse of short duration is transmitted, a transmission signal with a desired frequency characteristic by adjusting the shape of a pulse signal used in data transmissions. As a result, radio interference with other wireless systems in UWB communications is reduced. As aspects for adjusting the pulse signal, the present invention comprises an aspect for generating a pulse signal having a desired frequency characteristic by adjusting the shape of a single pulse itself, an aspect for generating a pulse signal having a desired frequency characteristic by combining a plurality of pulses, and an aspect for finding a combination of pulse signals from the frequency characteristic of an object transmission signal.
Claims11
A method of generating a pulse waveform that generates a signal with a desired frequency characteristic by adjusting the shape of a time pulse in UWB communications in which a pulse of short duration is transmitted.
A method of generating a pulse waveform that generates a time pulse shape that satisfies a desired frequency characteristic by adjusting a parameter on a time axis of a single pulse in UWB communications in which a pulse of short duration is transmitted.
A method of generating a pulse waveform that generates a time pulse shape that satisfies a desired frequency characteristic by setting a plurality of single pulses on a time axis.
A method of generating a pulse waveform that generates a time pulse shape that satisfies a desired frequency characteristic by expanding the desired frequency characteristic in a frequency region and combining a plurality of time pulses selected from among time pulses that form the component of the expanded frequency region, in UWB communications in which a pulse of short duration is transmitted.
A method of generating a pulse waveform that generates a time pulse shape that satisfies a desired frequency characteristic by subjecting a desired frequency characteristic or an approximate frequency characteristic to an inverse Fourier transform and combining a plurality of time waveforms selected from among time waveforms obtained by the inverse Fourier transform, in UWB communications in which a pulse of short duration is transmitted.
Dependencies are inferred from the claim text.