Methods and devices for self-interference cancelation
AssigneeIntel Corporation
InventorsCHIA-HSIANG CHEN, CHING-EN LEE, FENG XUE, SHU-PING YEH
Life of this patent
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Abstract
A communication circuit arrangement includes a signal path circuit configured to separately apply a kernel dimension filter and a delay tap dimension filter to an input signal for an amplifier to obtain an estimated interference signal, a cancelation circuit configured to subtract the estimated interference signal from a received signal to obtain a clean signal, and a filter update circuit configured to alternate between updating the kernel dimension filter and the delay tap dimension filter using the clean signal.
Claims23
A communication circuit arrangement comprising:
- a signal path circuit configured to separately apply a kernel dimension filter and a delay tap dimension filter to an input signal for an amplifier to obtain an estimated interference signal;
- a cancelation circuit configured to subtract the estimated interference signal from a received signal to obtain a clean signal;
- and
- a filter update circuit configured to alternate between updating the kernel dimension filter and the delay tap dimension filter using the clean signal.
A communication circuit arrangement comprising:
- a sub signal generation circuit configured to obtain one or more subsignals from an input signal for an amplifier, each of the one or more subsignals representing a non-linear component of an amplifier response and composed of a plurality of delay taps;
- a signal path circuit configured to separately apply a first filter and a second filter to the one or more subsignals to obtain an estimated interference signal, wherein the first filter approximates the amplifier response over the one or more subsignals and the second filter approximates the amplifier response over the plurality of delay taps;
- a cancelation circuit configured to subtract the estimated interference signal from the received signal to obtain a clean signal;
- and
- a filter update circuit configured to alternate between updating the first filter and updating the second filter using the clean signal.
A method of performing interference cancelation comprising:
- separately applying a kernel dimension filter and a delay tap dimension filter to an input signal for an amplifier to obtain an estimated interference signal;
- subtracting the estimated interference signal from a received signal to obtain a clean signal;
- and
- alternating between updating the kernel dimension filter and updating the delay tap dimension filter using the clean signal.
Dependencies are inferred from the claim text.