Equalizer assisted polynomial based linearity enhancement and self-interference canceler
AssigneeSamsung Electronics Co., Ltd.
InventorsKhurram Muhammad, Yu Liu, Chance Tarver
Life of this patent
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Abstract
A cross-division duplex (XDD) system includes an apparatus having a transceiver configured to communicate via an uplink channel and a downlink channel concurrently. The apparatus also includes a transmit antenna, a receive antenna, and a processor. The processor is configured to: estimate a non-linear component corresponding to a transmit path in the transceiver; apply an equalizer function to a received signal; and subtract, in a self-interference cancel (SIC) circuitry, the estimated non-linear component from the equalized signal.
Claims20
An apparatus comprising:
- a transceiver configured to communicate via an uplink channel and a downlink channel concurrently;
- a transmit antenna;
- a receive antenna;
- and
- a processor configured to:
- estimate a non-linear component corresponding to a transmit path in the transceiver;
- apply an equalizer function to a received signal, wherein the equalizer function is calculated based on a training signal that is transmitted at a low power such that the transmitted training signal is substantially linear;
- and
- subtract, in a self-interference cancel (SIC) circuitry, the estimated non-linear component from the equalized signal.
A method comprising:
- transmitting, by a transceiver configured to transmit an uplink channel and receive a downlink channel concurrently, one or more signals, the transceiver coupled to a transmit antenna and a receive antenna;
- estimating a non-linear component corresponding to a transmit path in the transceiver;
- applying an equalizer function to a received signal, wherein the equalizer function is calculated based on a training signal that is transmitted at a low power such that the transmitted training signal is substantially linear;
- and
- subtracting, in a self-interference cancel (SIC) circuitry, the estimated non-linear component from the equalized signal.
A non-transitory computer readable medium comprising a plurality of instructions that, when executed by at least one processor, cause the processor to:
- transmit, via a transceiver configured to communicate via an uplink channel and a downlink channel concurrently, one or more signals, the transceiver coupled to a transmit antenna and a receive antenna;
- estimate a non-linear component corresponding to a transmit path in the transceiver;
- apply an equalizer function to a received signal, wherein the equalizer function is calculated based on a training signal that is transmitted at a low power such that the transmitted training signal is substantially linear;
- and
- subtract, in a self-interference cancel (SIC) circuitry, the estimated non-linear component from the equalized signal.
Dependencies are inferred from the claim text.