发明名称 |
Image cancellation in receivers using dual adaptive filters |
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. |
申请公布号 |
US8787860(B2) |
申请公布日期 |
2014.07.22 |
申请号 |
US201213549376 |
申请日期 |
2012.07.13 |
申请人 |
Marvell World Trade Ltd. |
发明人 |
Dai Shaoan;He Runsheng |
分类号 |
H04B1/10 |
主分类号 |
H04B1/10 |
代理机构 |
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代理人 |
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主权项 |
1. A method comprising:
receiving a downconverted signal in a digital domain, the downconverted signal comprising 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 a 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. |
地址 |
St. Michael BB |