发明名称 |
Frequency domain echo and next cancellation |
摘要 |
A cancellation system is disclosed for processing incoming and outgoing signals in a transform domain to create a cancellation signal for reducing or removing unwanted interference. Data is ordered based on Good-Thomas indexing into a two dimensional array in a buffer. The two dimensional array may have l<SUB>r </SUB>rows and l<SUB>w </SUB>columns. From the buffer, the columns of data undergo a Winograd small transform. The rows of data undergo a Cooley-Tukey operation to complete the transform operation into the frequency domain. Multipliers scale the transformed data to generate a cancellation signal in the frequency domain. Inverse (Cooley-Tukey) and Winograd transforms perform inverse processing on the cancellation signal to return the cancellation signal or data to the time domain. Re-ordering the data and combination of the cancellation signal or data with incoming or outgoing signals achieve interference cancellation.
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申请公布号 |
US2008239939(A1) |
申请公布日期 |
2008.10.02 |
申请号 |
US20080074256 |
申请日期 |
2008.02.29 |
申请人 |
PARNABY GAVIN D;ZIMMERMAN GEORGE A;PAGNANELLI CHRIS;JONES WILLIAM W |
发明人 |
PARNABY GAVIN D.;ZIMMERMAN GEORGE A.;PAGNANELLI CHRIS;JONES WILLIAM W. |
分类号 |
H04J3/10 |
主分类号 |
H04J3/10 |
代理机构 |
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主权项 |
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地址 |
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