APPARATUS FOR RECEIVING SIGNAL AND METHOD OF COMPENSATING PHASE MISMATCH THEREOF
First Claim
1. An apparatus for receiving a signal, comprising:
- a memory;
a training signal generator configured to generate a training signal corresponding to each of one or more frequency channels;
an IQ signal generator configured to generate a first in-phase signal and a first quadrature-phase signal using the training signal in a first operation mode and generate a second in-phase signal and a second quadrature-phase signal using a received signal in a second operation mode; and
an IQ mismatch compensator configured to cause the first in-phase signal and the first quadrature-phase signal generated in response to each of the one or more frequency channels converge for a reference time in the first operation mode to obtain a phase mismatch compensation coefficient, configured to obtain the phase mismatch compensation coefficient with respect to selected frequency channels from among the one or more frequency channels and store a the phase mismatch compensation coefficient in a look-up table in the memory, and configured to compensate the second in-phase signal and the second quadrature-phase signal using the phase mismatch compensation coefficient included in the look-up table in the second operation mode, after obtaining the phase mismatch compensation coefficient.
1 Assignment
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Accused Products
Abstract
An apparatus for receiving a signal includes a training signal generator generating a training signal corresponding to each frequency channel; an IQ signal generator generating a first in-phase signal and a first quadrature-phase signal using the training signal in a first operation mode and generating a second in-phase signal and a second quadrature-phase signal using a receiving signal in a second operation mode; an IQ mismatch compensator which makes the first in-phase signal and the first quadrature-phase signal generated in response to each frequency channel converge for a reference time in the first operation mode to obtain a phase mismatch compensation coefficient and after obtaining a phase mismatch compensation coefficient with respect to selected frequency channels and generating a look-up table using the phase mismatch compensation coefficient, compensates the second in-phase signal and the second quadrature-phase signal using the phase mismatch compensation coefficient included in the look-up table in the second operation mode; and a memory in which the look-up table is stored.
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Citations
11 Claims
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1. An apparatus for receiving a signal, comprising:
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a memory; a training signal generator configured to generate a training signal corresponding to each of one or more frequency channels; an IQ signal generator configured to generate a first in-phase signal and a first quadrature-phase signal using the training signal in a first operation mode and generate a second in-phase signal and a second quadrature-phase signal using a received signal in a second operation mode; and an IQ mismatch compensator configured to cause the first in-phase signal and the first quadrature-phase signal generated in response to each of the one or more frequency channels converge for a reference time in the first operation mode to obtain a phase mismatch compensation coefficient, configured to obtain the phase mismatch compensation coefficient with respect to selected frequency channels from among the one or more frequency channels and store a the phase mismatch compensation coefficient in a look-up table in the memory, and configured to compensate the second in-phase signal and the second quadrature-phase signal using the phase mismatch compensation coefficient included in the look-up table in the second operation mode, after obtaining the phase mismatch compensation coefficient. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of compensating a phase mismatch, comprising:
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generating a training signal corresponding to each of one or more frequency channels in a first operation mode and converging a first in-phase signal and a first quadrature-phase signal generated using the training signal for a reference time to obtain a phase mismatch compensation coefficient; obtaining the phase mismatch compensation coefficient from channels selected in the first operation mode and generating a look-up table using the obtained phase mismatch compensation coefficients; and compensating a phase mismatch of a second in-phase signal and a second quadrature-phase signal generated using a receiving signal in a second operation mode using the phase mismatch compensation coefficient extracted from the look-up table. - View Dependent Claims (9, 10)
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11. An apparatus for receiving a signal, comprising:
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a memory; a training signal generator configured to generate a training signal corresponding to each of one or more frequency channels; an IQ signal generator configured to operate in a first operation mode and a second operation mode such that in the first operation mode, the IQ signal generator is configured to generate a first in-phase signal and a first quadrature-phase signal based on the training signal, and in the second operation mode, the IQ signal generator is configured to generate a second in-phase signal and a second quadrature-phase signal based on a receiving signal; and an IQ mismatch compensator configured to operate in the first operation mode and the second operation mode such that, in the first operation mode, the IQ mismatch compensator is configured to obtain a phase mismatch compensation coefficient based on selected frequency channels from among the one or more frequency channels by causing the first in-phase signal and the first quadrature-phase signal to converge for a reference time, and configured to store the obtained phase mismatch compensation coefficient in a look-up table in the memory, and in the second operation mode, the IQ mismatch compensator is configured to compensate the second in-phase signal and the second quadrature-phase signal using the phase mismatch compensation coefficient included in the look-up table.
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Specification