Electronic system with RFI cancelation mechanism and related RFI cancelation method
AssigneeRealtek Semiconductor Corp.
InventorsChia-Chang Lin, Li-Chung Chen, Ching-Yao Su, Yuan-Jih Chu
Life of this patent
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Abstract
An electronic system includes a feedforward equalizer, a feedback equalizer, an RFI canceler, and a control circuit. The feedforward equalizer and the feedback equalizer are configured to adjust the channel response of a transmission channel in the electronic system. The RFI canceler is configured to cancel the RFI presence in the electronic system. When the RFI canceler is off, the controller is configured to turn on the RFI canceler according to a signal error value before RFI cancelation, an error term of the electronic system, or an SNR of the electronic system.
Claims12
An electronic system with radio-frequency interference (RFI) cancelation mechanism, comprising:
- a feedforward equalizer configured to adjust a channel response of a transmission channel in the electronic system and cancel an RFI presence in the electronic system;
- a feedback equalizer configured to adjust the channel response of the transmission channel in the electronic system;
- an RFI canceler configured to cancel the RFI presence in the electronic system;
- and
- a control circuit configured to:
- determine whether the RFI canceler which is currently deactivated should be activated according to a signal error value before RFI cancelation, an error term of the electronic system, or a signal-to-noise ratio (SNR) of the electronic system;
- and
- determine whether the RFI canceler which is currently activated should be deactivated according to a response of the RFI canceler, the signal error value before RFI cancelation, the error term of the electronic system, or the SNR of the electronic system.
A method of performing radio-frequency interference (RFI) cancelation, comprising:
- a feedforward equalizer in an electronic system adjusting a channel response of a transmission channel in the electronic system and canceling an RFI presence in the electronic system;
- a feedback equalizer in the electronic system adjusting the channel response of the transmission channel in the electronic system;
- detecting a response of an RFI canceler in the electronic system or a signal error value before RFI cancelation;
- detecting an error term or an SNR of the electronic system;
- and
- determining whether the RFI canceler which is currently deactivated should be activated according to the signal error value before RFI cancelation, the error term of the electronic system, or the SNR of the electronic system.
A method of performing RFI cancelation, comprising:
- a feedforward equalizer in an electronic system adjusting a channel response of a transmission channel in the electronic system and canceling an RFI presence in the electronic system;
- a feedback equalizer in the electronic system adjusting the channel response of the transmission channel in the electronic system;
- detecting a response of an RFI canceler in the electronic system or a signal error value before RFI cancelation;
- and
- determining whether the RFI canceler which is currently activated should be deactivated according to the response of the RFI canceler, the signal error value before RFI cancelation, the error term of the electronic system, or the SNR of the electronic system.
Dependencies are inferred from the claim text.