Information processing device, method, and program for IQ balance correction
[Object] To realize IQ imbalance correction in a more preferable aspect. [Solution] An information processing device including: a calculation unit configured to calculate an error between predetermined reference coordinates on an IQ plane and a signal point of a received predetermined reference signal on a basis of a reception result of the reference signal on which phase modulation or quadrature amplitude modulation is implemented and mapping information of the reference signal; and a generation unit configured to generate correction data for correcting a deviation of a signal point of a received signal on a basis of a calculation result of the error.
1. An information processing device comprising:
circuitry configured to
calculate an error between predetermined reference coordinates on an IQ plane and a signal point of a received predetermined reference signal on a basis of a reception result of the reference signal on which phase modulation or quadrature amplitude modulation is implemented and mapping information of the reference signal; and
generate correction data for correcting a deviation of a signal point of a received signal on a basis of a calculation result of the error, wherein
the circuitry is configured to calculate at least any of a phase error or an amplitude error of the signal point with respect to the reference coordinates, as the error.
2. The information processing device according to claim 1 , wherein
the circuitry is configured to calculate at least any of the phase error or the amplitude error on a basis of a CORDIC algorithm.
3. The information processing device according to claim 1 , wherein
the reference signal is a signal unique to a cell.
4. The information processing device according to claim 1 , wherein
the reference signal is a signal used in measuring reception quality in downlink.
5. An information processing device comprising:
circuitry configured to
calculate an error between predetermined reference coordinates on an IQ plane and a signal point of a received predetermined reference signal on a basis of a reception result of the reference signal on which phase modulation or quadrature amplitude modulation is implemented and mapping information of the reference signal; and
generate correction data for correcting a deviation of a signal point of a received signal on a basis of a calculation result of the error, wherein
the received signal is a signal generated by separating a signal on which phase shift keying is implemented into signals for respective sub channels by a filter bank and equalizing the separated signals.
6. An information processing device comprising:
circuitry configured to
calculate an error between predetermined reference coordinates on an IQ plane and a signal point of a received predetermined reference signal on a basis of a reception result of the reference signal on which phase modulation or quadrature amplitude modulation is implemented and mapping information of the reference signal; and
generate correction data for correcting a deviation of a signal point of a received signal on a basis of a calculation result of the error, wherein
the received signal is a signal on which an offset process is implemented in a time axis direction with respect to one of an in-phase component and an out-of-phase component.
7. An information processing device comprising:
circuitry configured to
calculate an error between predetermined reference coordinates on an IQ plane and a signal point of a received predetermined reference signal on a basis of a reception result of the reference signal on which phase modulation or quadrature amplitude modulation is implemented and mapping information of the reference signal; and
generate correction data for correcting a deviation of a signal point of a received signal on a basis of a calculation result of the error, wherein
the received signal is a signal on which modulation is implemented on a basis of different conditions for respective sub bands.
8. An information processing device comprising:
circuitry configured to
calculate an error between predetermined reference coordinates on an IQ plane and a signal point of a received predetermined reference signal on a basis of a reception result of the reference signal on which phase modulation or quadrature amplitude modulation is implemented and mapping information of the reference signal; and
generate correction data for correcting a deviation of a signal point of a received signal on a basis of a calculation result of the error, wherein
the circuitry is configured to calculate the error on a basis of a reception result of the reference signal transmitted through a communication environment in which occurrence of amplitude and phase distortion due to fading is prevented.
9. The information processing device according to claim 8 , wherein
the circuitry is configured to calculate the error on a basis of the reception result of the reference signal transmitted from an external device simulating a base station through a cable.
10. An information processing method comprising:
calculating, by a processor, an error between predetermined reference coordinates on an IQ plane and a signal point of a received predetermined reference signal on a basis of a reception result of the reference signal on which phase modulation or quadrature amplitude modulation is implemented and mapping information of the reference signal; and
generating, by the processor, correction data for correcting a deviation of a signal point of a received signal on a basis of a calculation result of the error, wherein
the calculating includes calculating at least any of a phase error or an amplitude error of the signal point with respect to the reference coordinates, as the error.