Signal quality estimation and control
AssigneeTexas Instruments Incorporated
InventorsPankaj Gupta, Sriram Murali, Jaiganesh Balakrishnan, Sanjay Vishwakarma
Life of this patent
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Abstract
Several circuits and methods implemented to perform signal quality estimation and control are disclosed. In an embodiment, a method of signal quality estimation includes generating a demodulated signal associated with a radio signal. Information associated with a quality of the demodulated signal is accessed. Further, a value of radio frequency signal-to-noise ratio (RF-SNR) for the radio signal based on the information is estimated. Estimating the value of RF-SNR facilitates in signal quality estimation of the radio signal and control of the demodulated signal.
Claims20
A method of signal quality estimation and control, the method comprising:
- generating a demodulated signal associated with a radio signal;
- accessing an information associated with quality of the demodulated signal;
- and
- estimating a value of radio frequency signal-to-noise ratio (RF-SNR) for the radio signal based on the information,
- wherein estimating the value of RF-SNR facilitates in signal quality estimation of the radio signal and control of the demodulated signal.
A circuit for signal quality estimation and control, the circuit comprising:
- a frequency shifter circuit configured to convert a demodulated signal associated with a radio signal such that a signal-free region of the demodulated signal is around direct current (DC), the converted signal comprising a signal component and a noise component;
- a filter circuit coupled with the frequency shifter circuit and configured to reject the signal component and retain the noise component;
- and
- a radio frequency signal-to-noise ratio (RF-SNR) estimation circuit coupled with the filter circuit and configured to estimate a value of a RF-SNR of the radio signal based on the noise component, wherein estimating the value of RF-SNR facilitates in signal quality estimation of the radio signal and control of the demodulated signal.
A radio receiver, comprising:
- a demodulator circuit configured to generate a demodulated signal associated with a radio signal;
- and
- a signal quality estimation circuit coupled with the demodulator circuit, the signal quality estimation and control circuit configured to:
- access an information associated with a quality of the demodulated signal, and
- estimate a value of radio frequency signal-to-noise ratio (RF-SNR) for the radio signal based on the information, wherein estimating the value of the RF-SNR facilitates in signal quality estimation of the radio signal;
- and
- a control circuit coupled with the signal quality estimation circuit and configured to control of the demodulated signal based on the estimated value of the RF-SNR.
Dependencies are inferred from the claim text.