发明名称 |
RADIO FREQUENCY NOISE CANCELLER |
摘要 |
A receiver or receiver system for high speed data communications having a radio frequency noise canceller (112) is disclosed. The radio frequency noise canceller (112) removes radio-frequency noise from received signals over a transmission medium by adaptively estimating the radio-frequency noise during data transmission. In one embodiment, the radio frequency noise canceller includes: an adaptive filter (208) for producing a noise cancellation signal by filtering a reference noise signal based on filter parameters, a subtractor (202) for subtracting the noise cancellation signal from the first signal to produce the second signal; and an update circuit (204) for enabling, at predetermined times, modification of the parameters of the adaptive filter based on the then existing second signal. A method for removing radio frequency noise is also disclosed.
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申请公布号 |
CA2251887(A1) |
申请公布日期 |
1997.10.30 |
申请号 |
CA19972251887 |
申请日期 |
1997.04.17 |
申请人 |
AMATI COMMUNICATIONS CORPORATION |
发明人 |
CIOFFI, JOHN M.;BINGHAM, JOHN A.;MALLORY, MARK P. |
分类号 |
H04B3/06;H04B1/10;H04B1/12;H04B3/32;H04B15/00;H04J11/00;H04L5/14;H04L27/26;H04M3/00;(IPC1-7):H04B1/10;H04B15/04;H04B1/06;H04Q11/06 |
主分类号 |
H04B3/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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