发明名称 |
Method and apparatus to remove effects of I-Q imbalances of quadrature modulators and demodulators in a multi-carrier system |
摘要 |
The present invention is a method and apparatus to remove the adverse effects due to the imbalance between in-phase (I) and quadrature (Q) channels for I-Q demodulators and modulators in multi-carrier systems. A first balancer generates a first balancing signal from a first signal of a first index corresponding to a first frequency. A first combiner combines the first balancing signal and a second signal of a second index corresponding to a second frequency. The second frequency is symmetrical to the first frequency with respect to a center frequency in a multi-carrier composite signal. The first combiner generates a first balanced signal corresponding to the second frequency.
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申请公布号 |
US2003035470(A1) |
申请公布日期 |
2003.02.20 |
申请号 |
US20010922019 |
申请日期 |
2001.08.02 |
申请人 |
GU JIAN |
发明人 |
GU JIAN |
分类号 |
H03C3/40;H03D3/00;H04L27/26;H04L27/36;(IPC1-7):H04L5/16;H04L27/04;H04L27/06 |
主分类号 |
H03C3/40 |
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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