发明名称 |
Combined echo and crosstalk cancellation |
摘要 |
Combined echo and crosstalk cancellation is provided. Frequency domain adaptive filters are used to remove or reduce the effects of echo and crosstalk for a multi-channel and full-duplex communications system. Data from each transmit channel is buffered and converted to the frequency domain. The frequency domain data is multiplied by crosstalk coefficients to obtain a frequency domain correction signal for each channel. Adaptation of the crosstalk coefficients is based on correlations between the error signals and the data from each of the transmit channels. A single frequency domain transform engine, such as a Fast Fourier Transform engine, is employed for all calculations to save power and area.
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申请公布号 |
US8488438(B2) |
申请公布日期 |
2013.07.16 |
申请号 |
US201113025942 |
申请日期 |
2011.02.11 |
申请人 |
LITTLE JAMES M.;HASSOUN MARWAN;TETZLAFF DAVID;LIU CHANG-CHI;VINTOMIE NETWORKS B.V., LLC |
发明人 |
LITTLE JAMES M.;HASSOUN MARWAN;TETZLAFF DAVID;LIU CHANG-CHI |
分类号 |
H04J1/12;H04L12/16 |
主分类号 |
H04J1/12 |
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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