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US 8,576,902 B2Granted
Receiving device and method, demodulating device and method, and program
AssigneeSony Corporation
InventorsHirofumi Maruyama, Ryo Hasegawa, Katsumi Takaoka
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Abstract
The present disclosure provides a receiving device including, a receiver configured to receive a signal that is transmitted via a propagation path and is modulated by a predetermined system prescribed by a predetermined standard, a demodulator configured to demodulate a received signal, an estimator configured to estimate a signal-to-noise ratio relating to the propagation path, obtained from a data signal included in the demodulated received signal, and a corrector configured to correct an estimated signal-to-noise ratio in accordance with a transmission parameter obtained from the received signal.
Claims16
A receiving device comprising:
- a receiver configured to receive a signal that is transmitted via a propagation path and is modulated by a predetermined system prescribed by a predetermined standard;
- a demodulator configured to demodulate the received signal;
- an estimator configured to estimate a signal-to-noise ratio relating to the propagation path, obtained from a data signal included in the demodulated received signal;
- a corrector configured to correct the estimated signal-to-noise ratio in accordance with a transmission parameter obtained from the received signal;
- and
- an acquirer configured to acquire a correction parameter that is associated with the transmission parameter on each transmission parameter basis and is used for correction of the estimated signal-to-noise ratio, wherein the corrector performs predetermined calculation with use of the acquired correction parameter to approximate a value of the estimated signal-to-noise ratio to a value of a path signal-to-noise ratio of the propagation path, wherein the correction parameter includes a first variable indicating the amount of correction of a slope of the estimated signal-to-noise ratio on a logarithmic axis of the path signal-to-noise ratio and the estimated signal-to-noise ratio, and a second variable indicating the amount of correction of an intercept of the estimated signal-to-noise ratio, and the corrector performs second calculation of multiplying, by the second variable, a value obtained by raising the estimated signal-to-noise ratio as a true value to the power of the first variable, to correct the estimated signal-to-noise ratio so that the path signal-to-noise ratio and the estimated signal-to-noise ratio have a proportional relationship.
3 more elements
A receiving method of a receiving device, the method comprising:
- receiving a signal that is transmitted via a propagation path and is modulated by a predetermined system prescribed by a predetermined standard;
- demodulating the received signal;
- estimating a signal-to-noise ratio relating to the propagation path, obtained from a data signal included in the demodulated received signal;
- correcting the estimated signal-to-noise ratio in accordance with a transmission parameter obtained from the received signal;
- and
- acquiring a correction parameter that is associated with the transmission parameter on each transmission parameter basis and using for correction of the estimated signal-to-noise ratio, wherein a corrector performs predetermined calculation with use of the acquired correction parameter to approximate a value of the estimated signal-to-noise ratio to a value of a path signal-to-noise ratio of the propagation path, wherein the correction parameter includes a first variable indicating the amount of correction of a slope of the estimated signal-to-noise ratio on a logarithmic axis of the path signal-to-noise ratio and the estimated signal-to-noise ratio, and a second variable indicating the amount of correction of an intercept of the estimated signal-to-noise ratio, and the corrector performs second calculation of multiplying, by the second variable, a value obtained by raising the estimated signal-to-noise ratio to the power of the first variable, to correct the estimated signal-to-noise ratio so that the path signal-to-noise ratio and the estimated signal-to-noise ratio have a proportional relationship.
3 more elements
A non-transitory computer-readable storage medium having stored thereon, a computer program having at least one code section for communication, the at least one code section being executable by a device for causing the device to perform steps comprising:
- in a receiver:
- receiving a signal that is transmitted via a propagation path and is modulated by a predetermined system prescribed by a predetermined standard;
- demodulating the received signal;
- estimating a signal-to-noise ratio relating to the propagation path, obtained from a data signal included in the demodulated received signal;
- correcting the estimated signal-to-noise ratio in accordance with a transmission parameter obtained from the received signal;
- and
- acquiring a correction parameter that is associated with the transmission parameter on each transmission parameter basis and using for correction of the estimated signal-to-noise ratio, wherein a corrector performs predetermined calculation with use of the acquired correction parameter to approximate a value of the estimated signal-to-noise ratio to a value of a path signal-to-noise ratio of the propagation path, wherein the correction parameter includes a first variable indicating the amount of correction of a slope of the estimated signal-to-noise ratio on a logarithmic axis of the path signal-to-noise ratio and the estimated signal-to-noise ratio, and a second variable indicating the amount of correction of an intercept of the estimated signal-to-noise ratio, and the corrector performs second calculation of multiplying, by the second variable, a value obtained by raising the estimated signal-to-noise ratio to the power of the first variable, to correct the estimated signal-to-noise ratio so that the path signal-to-noise ratio and the estimated signal-to-noise ratio have a proportional relationship.
4 more elements
A demodulating device comprising:
- a demodulator configured to demodulate a received signal that is transmitted via a propagation path and is modulated by a predetermined system prescribed by a predetermined standard;
- an estimator configured to estimate a signal-to-noise ratio relating to the propagation path, obtained from a data signal included in the demodulated received signal;
- a corrector configured to correct the estimated signal-to-noise ratio in accordance with a transmission parameter obtained from the received signal;
- and
- an acquirer configured to acquire a correction parameter that is associated with the transmission parameter on each transmission parameter basis and is used for correction of the estimated signal-to-noise ratio, wherein the corrector performs predetermined calculation with use of the acquired correction parameter to approximate a value of the estimated signal-to-noise ratio to a value of a path signal-to-noise ratio of the propagation path, wherein the correction parameter includes a first variable indicating the amount of correction of a slope of the estimated signal-to-noise ratio on a logarithmic axis of the path signal-to-noise ratio and the estimated signal-to-noise ratio, and a second variable indicating the amount of correction of an intercept of the estimated signal-to-noise ratio, and the corrector performs second calculation of multiplying, by the second variable, a value obtained by raising the estimated signal-to-noise ratio as a true value to the power of the first variable, to correct the estimated signal-to-noise ratio so that the path signal-to-noise ratio and the estimated signal-to-noise ratio have a proportional relationship.
2 more elements
A demodulating method of a demodulating device, the method comprising:
- demodulating a received signal that is transmitted via a propagation path and is modulated by a predetermined system prescribed by a predetermined standard;
- estimating a signal-to-noise ratio relating to the propagation path, obtained from a data signal included in the demodulated received signal;
- and
- correcting the estimated signal-to-noise ratio in accordance with a transmission parameter obtained from the received signal;
- and
- acquiring a correction parameter that is associated with the transmission parameter on each transmission parameter basis and is used for correction of the estimated signal-to-noise ratio, wherein a corrector performs predetermined calculation with use of the acquired correction parameter to approximate a value of the estimated signal-to-noise ratio to a value of a path signal-to-noise ratio of the propagation path, wherein the correction parameter includes a first variable indicating the amount of correction of a slope of the estimated signal-to-noise ratio on a logarithmic axis of the path signal-to-noise ratio and the estimated signal-to-noise ratio, and a second variable indicating the amount of correction of an intercept of the estimated signal-to-noise ratio, and the corrector performs second calculation of multiplying, by the second variable, a value obtained by raising an estimated signal-to-noise ratio to the power of the first variable, to correct the estimated signal-to-noise ratio so that the path signal-to-noise ratio and the estimated signal-to-noise ratio have a proportional relationship.
3 more elements
A non-transitory computer-readable storage medium having stored thereon, a computer program having at least one code section for communication, the at least one code section being executable by a device for causing the device to perform steps comprising:
- demodulating a received signal that is transmitted via a propagation path and is modulated by a predetermined system prescribed by a predetermined standard;
- estimating a signal-to-noise ratio relating to the propagation path, obtained from a data signal included in the demodulated received signal;
- and
- correcting the estimated signal-to-noise ratio in accordance with a transmission parameter obtained from the received signal;
- and
- acquiring a correction parameter that is associated with the transmission parameter on each transmission parameter basis and is used for correction of the estimated signal-to-noise ratio, wherein a corrector performs predetermined calculation with use of the acquired correction parameter to approximate a value of the estimated signal-to-noise ratio to a value of a path signal-to-noise ratio of the propagation path, wherein the correction parameter includes a first variable indicating the amount of correction of a slope of the estimated signal-to-noise ratio on a logarithmic axis of the path signal-to-noise ratio and the estimated signal-to-noise ratio, and a second variable indicating the amount of correction of an intercept of the estimated signal-to-noise ratio, and the corrector performs second calculation of multiplying, by the second variable, a value obtained by raising an estimated signal-to-noise ratio to the power of the first variable, to correct the estimated signal-to-noise ratio so that the path signal-to-noise ratio and the estimated signal-to-noise ratio have a proportional relationship.
3 more elements
Dependencies are inferred from the claim text.