APPARATUS AND METHOD FOR TRANSMITTING/RECEIVING SIGNAL
First Claim
1. A signal transmitting apparatus comprising:
- a signal distributor configured to baseband signals corresponding respectively to a plurality of frequency bands;
a frequency converter configured to convert each of the distributed baseband signals into one of a positive frequency signal and a negative frequency signal according to the frequency band; and
a frequency synthesizer configured to synthesize the positive frequency signal and the negative frequency signal to generate a transmission signal,wherein the positive frequency signal and the negative frequency signal are signals included in one predetermined intermediate frequency band.
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Abstract
A signal transmitting apparatus includes a signal distributor, a frequency converter, and a frequency synthesizer. The signal distributor is configured to baseband signals corresponding respectively to a plurality of frequency band. The frequency converter is configured to convert each of the distributed baseband signals into one of a positive frequency signal and a negative frequency signal according to the frequency band. The frequency synthesizer is configured to synthesize the positive frequency signal and the negative frequency signal to generate a transmission signal. Herein, the positive frequency signal and the negative frequency signal are signals included in one predetermined intermediate frequency band.
13 Citations
20 Claims
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1. A signal transmitting apparatus comprising:
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a signal distributor configured to baseband signals corresponding respectively to a plurality of frequency bands; a frequency converter configured to convert each of the distributed baseband signals into one of a positive frequency signal and a negative frequency signal according to the frequency band; and a frequency synthesizer configured to synthesize the positive frequency signal and the negative frequency signal to generate a transmission signal, wherein the positive frequency signal and the negative frequency signal are signals included in one predetermined intermediate frequency band. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A signal transmitting apparatus comprising:
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a negative frequency signal generating unit configured to generate a first baseband signal as a first negative frequency signal and a second negative frequency signal by operation with a first sine signal and a first cosine signal for conversion to a negative frequency region signal of an intermediate frequency band; a positive frequency signal generating unit configured to generate a second baseband signal as a first positive frequency signal and a second positive frequency signal by operation with a second sine signal and a second cosine signal for conversion to a positive frequency region signal of an intermediate frequency band; a rate matching unit configured to rate-match each of the first and second negative frequency signals and to rate-match each of the first and second positive frequency signals; a signal combining unit configured to generate a first frequency synthesis signal by subtracting the rate-matched first positive frequency signal from the rate-matched first negative frequency signal, and to generate a second frequency synthesis signal by adding the rate-matched second positive frequency signal to the rate-matched second negative frequency signal; and an intermediate frequency converting unit configured to generate a first intermediate frequency signal by multiplying the first frequency synthesis signal by a third sine signal for conversion to a signal of a second intermediate frequency band different from the intermediate frequency band, and to generate a second intermediate frequency signal by multiplying the first frequency synthesis signal by a third cosine signal, wherein the first baseband signal and the second baseband signal are signals of different frequency bands. - View Dependent Claims (11, 12)
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13. A signal transmitting apparatus comprising:
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a negative frequency signal generating unit configured to generate a first baseband signal as a first negative frequency signal and a second negative frequency signal by operation with a first sine signal and a first cosine signal for conversion to a negative frequency region signal of an intermediate frequency band; a positive frequency signal generating unit configured to generate a second baseband signal as a first positive frequency signal and a second positive frequency signal by operation with a second sine signal and a second cosine signal for conversion to a positive frequency region signal of an intermediate frequency band; a rate matching unit configured to rate-match each of the first and second negative frequency signals and to rate-match each of the first and second positive frequency signals; and a signal combining unit configured to generate a first frequency synthesis signal by adding the rate-matched first positive frequency signal to the rate-matched first negative frequency signal, and to generate a second frequency synthesis signal by subtracting the rate-matched second positive frequency signal from the rate-matched second negative frequency signal, wherein the first baseband signal and the second baseband signal are signals of different frequency bands. - View Dependent Claims (14, 15)
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16. A signal transmitting method of a transmitting apparatus, comprising:
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converting each of baseband signals corresponding respectively to a plurality of frequency bands into one of a positive frequency region signal and a negative frequency region signal; synthesizing the positive frequency region signal and the negative frequency region signal to generate a transmission signal; and transmitting the transmission signal, wherein the positive frequency region signal and the negative frequency region signal are signals of one predetermined intermediate frequency band. - View Dependent Claims (17, 18, 19, 20)
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Specification