Signal processing device, signal processing method, receiving device, and receiving method
First Claim
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1. A signal processing device comprising:
- a first correction processing section configured to perform first correction on a first signal to obtain a second signal;
an adaptive processing section configured to perform adaptive processing on the second signal to obtain a third signal and to be selectively put in either an effective state in which it performs manipulation processing on the second signal to obtain the third signal or a substantially ineffective state in which it does not perform manipulation processing on the second signal and only delays the third signal with respect to the second signal; and
a second correction processing section configured to perform second correction, which is reverse correction of the first correction, on the third signal, in accordance with an amount of delay in the adaptive processing, to obtain a fourth signal, the second correction processing section being configured to perform the second correction such that, if the adaptive processing section is in the effective state, the fourth signal is different than the first signal, and, if the adaptive processing section is in the substantially ineffective state, the fourth signal is substantially the same as the first signal.
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Abstract
There is provided a signal processing device including a first correction processing section that performs first correction on a predetermined signal, an adaptive processing section that performs predetermined adaptive processing on the signal that has been subjected to the first correction, and a second correction processing section that performs second correction, which is reverse correction of the first correction, on the signal that has been subjected to the adaptive processing, in accordance with the amount of delay in the adaptive processing.
9 Citations
10 Claims
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1. A signal processing device comprising:
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a first correction processing section configured to perform first correction on a first signal to obtain a second signal; an adaptive processing section configured to perform adaptive processing on the second signal to obtain a third signal and to be selectively put in either an effective state in which it performs manipulation processing on the second signal to obtain the third signal or a substantially ineffective state in which it does not perform manipulation processing on the second signal and only delays the third signal with respect to the second signal; and a second correction processing section configured to perform second correction, which is reverse correction of the first correction, on the third signal, in accordance with an amount of delay in the adaptive processing, to obtain a fourth signal, the second correction processing section being configured to perform the second correction such that, if the adaptive processing section is in the effective state, the fourth signal is different than the first signal, and, if the adaptive processing section is in the substantially ineffective state, the fourth signal is substantially the same as the first signal. - View Dependent Claims (2, 3, 4)
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5. A signal processing method performed by a signal processing device, the method comprising the steps of:
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performing first correction on a first signal to obtain a second signal; at a first time, performing effective adaptive processing on the second signal to obtain a third signal by performing manipulation processing on the second signal to obtain the third signal; at a second time, performing substantially ineffective adaptive processing on the second signal to obtain the third signal by not performing manipulation processing on the second signal and only delaying the third signal with respect to the second signal; and performing second correction, which is reverse correction of the first correction, on the third signal at each of the first and second times, in accordance with an amount of delay in the adaptive processing, to obtain a fourth signal, the second correction being performed such that, if the adaptive processing is effective, the fourth signal is different than the first signal, and, if the adaptive processing is substantially ineffective, the fourth signal is substantially the same as the first signal.
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6. A receiving device comprising:
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a first correction processing section configured to perform first frequency correction on a first signal comprising an orthogonal frequency division multiplexing (OFDM) signal to obtain a second signal; a time domain adaptive processing section configured to perform time domain adaptive processing, which is adaptive processing in a time domain, on the second signal to obtain a third signal and to be selectively put in either an effective state in which it performs adaptive processing in the time domain on the second signal to obtain the third signal or a substantially ineffective state in which it does not perform adaptive processing in the time domain on the second signal and only delays the third signal with respect to the second signal; and a second correction processing section configured to perform second frequency correction, which is reverse correction of the first frequency correction, on the third signal, in accordance with an amount of delay in the time domain adaptive processing, to obtain a fourth signal, the second correction being performed such that, if the time domain adaptive processing section is in the effective state, the fourth signal is different than the first signal, and, if the time domain adaptive processing section is in the substantially ineffective state, the fourth signal is substantially the same as the first signal. - View Dependent Claims (7, 8, 9)
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10. A receiving method performed by a receiving device, the method comprising the steps of:
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performing first frequency correction on a first signal comprising an OFDM signal to obtain a second signal; at a first time, performing effective time domain adaptive processing, which is adaptive processing in a time domain on the second signal to obtain a third signal by performing manipulation processing on the second signal to obtain the third signal; at a second time, performing substantially ineffective time domain adaptive processing on the second signal to obtain the third signal by not performing manipulation processing on the second signal and only delaying the third signal with respect to the second signal; and performing second frequency correction, which is reverse correction of the first frequency correction, on the third signal at each of the first and second times, in accordance with an amount of delay in the time domain adaptive processing, to obtain a fourth signal, the second frequency correction being performed such that, if the adaptive processing is effective, the fourth signal is different than the first signal, and, if the adaptive processing is substantially ineffective, the fourth signal is substantially the same as the first signal.
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Specification