发明授权
- 专利标题: Image cancellation in receivers using dual adaptive filters
- 专利标题(中): 使用双自适应滤波器的接收机中的图像消除
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申请号: US13549376申请日: 2012-07-13
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公开(公告)号: US08787860B2公开(公告)日: 2014-07-22
- 发明人: Shaoan Dai , Runsheng He
- 申请人: Shaoan Dai , Runsheng He
- 申请人地址: BB St. Michael
- 专利权人: Marvell World Trade Ltd.
- 当前专利权人: Marvell World Trade Ltd.
- 当前专利权人地址: BB St. Michael
- 主分类号: H04B1/10
- IPC分类号: H04B1/10
摘要:
The present disclosure includes apparatus, systems, and techniques relating to receiver image cancellation. A described technique includes receiving a downconverted signal in a digital domain, the downconverted signal including an in-phase signal and a quadrature signal; generating a first signal of a signal channel based on the downconverted signal; generating a second signal of an image channel based on the downconverted signal; filtering the second signal using first weights to produce a pilot training signal; filtering the second signal using second weights to produce an image cancellation signal; generating an output signal by subtracting the image cancellation signal from the first signal to resolve the desired signal; updating the first weights based on the first weights, the second signal, the pilot training signal, and a pilot signal; and updating the second weights based on the second weights, the output signal, and the pilot training signal.