发明名称 |
System and method for subliminal time domain duplexing |
摘要 |
The present invention provides methods and apparatus for transmitting a data-bearing signal and a non-data-bearing signal. One embodiment comprises communicatively coupling a data-bearing signal during a first time period and communicatively coupling a non-data-bearing signal during a second time period. The data-bearing signal has a first PSD. The non-data-bearing signal has a second PSD substantially the same as the first over a range of frequencies. The non-data-bearing signal has characteristics facilitating echo cancellation. Another embodiment comprises a line interface and a transmitter coupled to the line interface, comprising a data encoder and a periodic signal generator. The encoder is configured to produce a data-bearing signal with a first PSD. The periodic signal generator is configured to produce a non-data-bearing signal with a second PSD. The second PSD is substantially the same as the first PSD over a first range of frequencies. The non-data-bearing signal has characteristics facilitating echo cancellation.
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申请公布号 |
US2006193465(A1) |
申请公布日期 |
2006.08.31 |
申请号 |
US20060417627 |
申请日期 |
2006.05.04 |
申请人 |
BETTS WILLIAM L;BREMER GORDON F;MARTINEZ RAFAEL S |
发明人 |
BETTS WILLIAM L.;BREMER GORDON F.;MARTINEZ RAFAEL S. |
分类号 |
H04M9/08;H04L5/14 |
主分类号 |
H04M9/08 |
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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