Cancellation system for millimeter-wave radar
First Claim
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1. In a transceiver, a method comprising:
- receiving a signal substantially free of a desired received signal for identifying a leakage signal in a digital baseband received signal;
estimating the leakage signal;
synthesizing an estimated digital baseband leakage signal; and
subtracting the estimated digital baseband leakage signal from the digital baseband received signal for producing an interference-cancelled digital baseband received signal.
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Abstract
In a millimeter-wave radar, full-duplex operation comprises identifying a leakage signal in a digital baseband received signal, estimating the leakage signal, synthesizing an estimated leakage signal, and subtracting the estimated leakage signal from the digital baseband received signal. The time interval during which the leakage signal occurs may be measured, and samples of the digital baseband received signal within the time interval are masked to remove the leakage.
42 Citations
13 Claims
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1. In a transceiver, a method comprising:
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receiving a signal substantially free of a desired received signal for identifying a leakage signal in a digital baseband received signal; estimating the leakage signal; synthesizing an estimated digital baseband leakage signal; and subtracting the estimated digital baseband leakage signal from the digital baseband received signal for producing an interference-cancelled digital baseband received signal. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A transceiver, comprising:
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a timer for measuring a time interval between transmitting a transmission signal and detecting a leakage signal in a digital baseband received signal that is substantially free of any desired received signal; a detector for estimating the leakage signal; a synthesizer for synthesizing an estimated digital baseband leakage signal; and a canceller for subtracting the estimated digital baseband leakage signal from the digital baseband received signal for producing an interference-cancelled digital baseband received signal. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A non-transitory machine-readable medium comprising instructions encoded thereon and executable to:
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identify a leakage signal in a digital baseband received signal; estimate the leakage signal; synthesize an estimated digital baseband leakage signal; and subtract the estimated digital baseband leakage signal from the digital baseband received signal to produce an interference-cancelled digital baseband received signal.
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Specification