发明名称 |
Techniques to cancel echo tail |
摘要 |
Techniques are provided for reducing the magnitude of echo tails in a near-end modem. The invention may use an echo tail canceller to generate a signal that cancels echo tail. One characteristic of the echo tail canceller may be determined during a time when only the near-end modem is scheduled to transmit signals. Another characteristic of the echo tail canceller may be determined at approximately the time that a body echo canceller has reached convergence and may be re-determined periodically thereafter. The near-end modem may subtract from any received signal an echo tail canceller signal generated by the echo tail canceller to cancel echo tail from the received signal.
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申请公布号 |
US2003218992(A1) |
申请公布日期 |
2003.11.27 |
申请号 |
US20020154707 |
申请日期 |
2002.05.22 |
申请人 |
DANDAWATE AMOD V.;XIE QIAN C.;ZENG HUAIYU |
发明人 |
DANDAWATE AMOD V.;XIE QIAN C.;ZENG HUAIYU |
分类号 |
H04B3/23;(IPC1-7):H04B3/20 |
主分类号 |
H04B3/23 |
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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