发明名称 |
System for data transmission through the channels of a frequency division multiplex system |
摘要 |
Parallel data transmission system in which the data signals are converted to multilevel digital signals and transmitted through the channels of a frequency division multiplex system. To compensate for the delays between the data signals received in the various channels of the multiplex, a pilot signal is transmitted in each channel in the form of a signal which only has a real component. At the receiver side a filter circuit is used which comprises a first fixed coefficient part at whose input the data signal is multiplied by a component of the received pilot signal and a second part having two variable coefficients which are derived from the two components of the received pilot signal.
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申请公布号 |
US4020288(A) |
申请公布日期 |
1977.04.26 |
申请号 |
US19750623349 |
申请日期 |
1975.10.17 |
申请人 |
TELECOMMUNICATIONS RADIOELECTRIQUES ET TELEPHONIQUES T.R.T. |
发明人 |
BELLANGER, MAURICE GEORGES;DAGUET, JACQUES LUCIEN |
分类号 |
H04B3/10;H03H17/00;H03H17/02;H04B14/00;H04J1/05;H04J1/08;H04J1/14;H04J11/00;H04L5/00;H04L5/06;H04L25/02;(IPC1-7):H04J1/08 |
主分类号 |
H04B3/10 |
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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