摘要 |
This disclosure describes techniques for reducing adverse effects of TX s ignal leakage in a full-duplex, wireless communication system. In particular , the disclosure describes techniques for reducing adverse effects of second order distortion of TX signal leakage. To reduce or eliminate second order distortion of transmit signal leakage, a wireless device squares a combined signal that carries both a desired RX signal and a TX leakage signal. For ex ample, the device may include a device that exhibits a strong, second order nonlinearity to, in effect, square the combined signal. The device subtracts the squared signal from the output of the mixer in the receive path, cancel ling out at least some of the second-order distortion caused by the mixer. I n this manner, the device can reduce the adverse effects of second order dis tortion of TX signal leakage, and thereby enhance or maintain receiver sensi tivity.
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