REDUCTION OF SECOND-ORDER DISTORTION CAUSED BY TRA
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专利名称：REDUCTION OF SECOND-ORDER
DISTORTION CAUSED BY TRANSMIT SIGNAL
LEAKAGE
发明人：APARIN, Vladimir
申请号：EP08744208.3
申请日：20080321
公开号：EP2137830A1
公开日：
20091230
专利内容由知识产权出版社提供
摘要：This disclosure describes techniques for reducing adverse effects of TX signal 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 example, 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, canceling out at least some of the second-order distortion caused by the mixer. In this manner, the device can reduce the adverse effects of second order distortion of TX signal leakage, and thereby enhance or maintain receiver sensitivity.
申请人：QUALCOMM Incorporated
地址：Attn: International IP Administration 5775 Morehouse Drive San Diego, California 92121-1714 US
国籍：US
代理机构：Catesby, Olivia Joanne 更多信息请下载全文后查看。