Method and apparatus for adaptive non-linear self-jamming interference cancellation
First Claim
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1. A method, comprising:
- generating a signal to be transmitted on a first frequency band;
constructing a distorted version of the generated signal by applying an adaptive non-linear filter to a baseband portion of the generated signal, wherein coefficients of the adaptive non-linear filter are generated by minimizing a MSE (Minimum Square Error) cost function;
transmitting the generated signal on the first frequency band;
receiving a signal on a second frequency band, the received signal being corrupted by self-jamming interference, wherein the self-jamming interference is caused by any type of non-linearities generated by transmit and receive chains; and
subtracting the distorted version of the generated signal from the received signal to remove the self-jamming interference.
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Abstract
Certain embodiments of the disclosure propose a method for cancelling co-channel interference (self-jamming) generated by nonlinearities in the radio-frequency (RF) front-end devices. The proposed method utilizes an adaptive non-linear filter to generate a distorted version of the transmitted signal. The self-jamming interference may be mitigated utilizing the distorted signal through adaptive cancellation.
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Citations
28 Claims
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1. A method, comprising:
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generating a signal to be transmitted on a first frequency band; constructing a distorted version of the generated signal by applying an adaptive non-linear filter to a baseband portion of the generated signal, wherein coefficients of the adaptive non-linear filter are generated by minimizing a MSE (Minimum Square Error) cost function; transmitting the generated signal on the first frequency band; receiving a signal on a second frequency band, the received signal being corrupted by self-jamming interference, wherein the self-jamming interference is caused by any type of non-linearities generated by transmit and receive chains; and subtracting the distorted version of the generated signal from the received signal to remove the self-jamming interference. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An apparatus, comprising:
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means for generating a signal to be transmitted on a first frequency band; means for constructing a distorted version of the generated signal by applying an adaptive non-linear filter to a baseband portion of the generated signal, wherein coefficients of the adaptive non-linear filter are generated by minimizing a MSE (Minimum Square Error) cost function; means for transmitting the generated signal on the first frequency band; means for receiving a signal on a second frequency band, the received signal being corrupted by self-jamming interference, wherein the self-jamming interference is caused by any type of non-linearities generated by transmit and receive chains; and means for subtracting the additional distorted version of the generated signal from the received signal to remove the self-jamming interference. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. An apparatus, comprising:
at least one processor configured to; generate a signal to be transmitted on a first frequency band, construct a distorted version of the generated signal by applying an adaptive non-linear filter to a baseband portion of the generated signal, wherein coefficients of the adaptive non-linear filter are generated by minimizing a MSE (Minimum Square Error) cost function, transmit the generated signal on the first frequency band, receive a signal on a second frequency band, the received signal being corrupted by self-jamming interference, wherein the self-jamming interference is caused by any type of non-linearities generated by transmit and receive chains, and subtract the additional distorted version of the generated signal from the received signal to remove the self-jamming interference; and a memory coupled with the at least one processor.
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28. A computer-program product comprising a non-transitory computer-readable medium having instructions stored thereon, the instructions executable by a processor for:
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generating a signal to be transmitted on a first frequency band; constructing a distorted version of the generated signal by applying an adaptive non-linear filter to a baseband portion of the generated signal, wherein coefficients of the adaptive non-linear filter are generated by minimizing a MSE (Minimum Square Error) cost function; transmitting the generated signal on the first frequency band; receiving a signal on a second frequency band, the received signal being corrupted by self-jamming interference, wherein the self-jamming interference is caused by any type of non-linearities generated by transmit and receive chains; and subtracting the additional distorted version of the generated signal from the received signal to remove the self-jamming interference.
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Specification