发明名称 |
Apparatus for time division multiplexed processing of frequency division multiplexed signals. |
摘要 |
<p>Apparatus for processing harmonically related plural quadrature amplitude modulated carriers includes sampling apparatus (12,14) for converting the plural modulated carriers to sampled data format. The sampling apparatus is arranged to sample the signals at a frequency equal to four times the symbol rate of the highest frequency carrier such that alternate samples correspond to in-phase and quadrature-phase components of the signal. The sampled data signals are resampled (16-20) to separate respective in-phase and quadrature-phase components of the respective signals. The in-phase samples of the respective signals are time division multiplexed (20) and coupled to a Nyquist or symbol shaping filter (22) arranged to operate in a time division multiplexed manner. <IMAGE></p> |
申请公布号 |
EP0583890(A3) |
申请公布日期 |
1994.10.19 |
申请号 |
EP19930305759 |
申请日期 |
1993.07.22 |
申请人 |
THOMSON CONSUMER ELECTRONICS, INC. |
发明人 |
CHRISTOPHER, LAUREN ANN |
分类号 |
H04N7/015;H04L7/02;H04L27/20;H04N5/44;H04N7/08;H04N7/081;H04N9/64;H04N11/24;(IPC1-7):H04N7/08 |
主分类号 |
H04N7/015 |
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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