Wireless transmitter, wireless receiver, wireless communication system, control circuit, and storage medium
AssigneeMitsubishi Electric Corporation
InventorsMasatsugu Higashinaka, Hiroyasu Sano
Life of this patent
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Abstract
A transmitter includes: a phase rotation sequence generation unit that generates, on the basis of transmit bits being input, a phase rotation sequence in which a frequency response has a bandwidth; an up-sampling unit that changes a sample rate of the phase rotation sequence and further replicates the phase rotation sequence; and a frequency shift unit that shifts, by a specified amount of shift on a frequency axis, a frequency component of the phase rotation sequence acquired from the up-sampling unit.
Claims14
A wireless transmitter comprising:
- phase rotation sequence generation circuitry to generate, on a basis of input transmit bits, a phase rotation sequence in which a frequency response has a bandwidth;
- up-sampling circuitry to change a sample rate of the phase rotation sequence and further replicate the phase rotation sequence;
- and
- frequency shift circuitry to shift, by a specified amount of shift on a frequency axis, a frequency component of the phase rotation sequence acquired from the up-sampling circuitry, wherein
- when the phase rotation sequence generation circuitry generates the phase rotation sequence, using a first phase rotation sequence and a second phase rotation sequence whose frequency component changes with time, the first phase rotation sequence being a frequency modulated signal whose frequency is selected as one frequency from a plurality of frequencies and on the basis of the transmit bits, the phase rotation sequence generation circuitry generates the phase rotation sequence, using a plurality of the first phase rotation sequences that has a sequence length shorter than a sequence length of the second phase rotation sequence.
A control circuit for controlling a wireless transmitter, the control circuit causing the wireless transmitter to:
- generate, on a basis of input transmit bits, a phase rotation sequence in which a frequency response has a bandwidth;
- change a sample rate of the phase rotation sequence and further replicate the phase rotation sequence;
- and
- shift, by a specified amount of shift on a frequency axis, a frequency component of the phase rotation sequence, wherein
- in generating the phase rotation sequence, using a first phase rotation sequence and a second phase rotation sequence whose frequency component changes with time, the first phase rotation sequence being a frequency modulated signal whose frequency is selected as one frequency from a plurality of frequencies and on the basis of the transmit bits, the control circuit causes the wireless transmitter to generate the phase rotation sequence, using a plurality of the first phase rotation sequences that has a sequence length shorter than a sequence length of the second phase rotation sequence.
A non-transitory computer readable storage medium storing a program for controlling a wireless transmitter, the program causing the wireless transmitter to:
- generate, on a basis of input transmit bits, a phase rotation sequence in which a frequency response has a bandwidth;
- change a sample rate of the phase rotation sequence and further replicate the phase rotation sequence;
- and
- shift, by a specified amount of shift on a frequency axis, a frequency component of the phase rotation sequence, wherein
- in generating the phase rotation sequence, using a first phase rotation sequence and a second phase rotation sequence whose frequency component changes with time, the first phase rotation sequence being a frequency modulated signal whose frequency is selected as one frequency from a plurality of frequencies and on the basis of the transmit bits, the control circuit causes the wireless transmitter to generate the phase rotation sequence, using a plurality of the first phase rotation sequences that has a sequence length shorter than a sequence length of the second phase rotation sequence.
Dependencies are inferred from the claim text.