发明公开
- 专利标题: Procedure and device for timing recovery in the reception of base band digital signals
- 专利标题(中): 接收基带数字信号时间恢复的程序和设备
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申请号: EP90200554.5申请日: 1990-03-09
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公开(公告)号: EP0389027A3公开(公告)日: 1991-01-30
- 发明人: Colombo, Roberto , Di Donna, Giambattista
- 申请人: SIEMENS TELECOMUNICAZIONI S.P.A.
- 申请人地址: SS. 11 Padana Superiore Km. 158 I-20060 Cassina de Pecchi (Milano) IT
- 专利权人: SIEMENS TELECOMUNICAZIONI S.P.A.
- 当前专利权人: SIEMENS TELECOMUNICAZIONI S.P.A.
- 当前专利权人地址: SS. 11 Padana Superiore Km. 158 I-20060 Cassina de Pecchi (Milano) IT
- 优先权: IT1989989 19890324
- 主分类号: H04L7/033
- IPC分类号: H04L7/033 ; H04L7/02
摘要:
The timing recovery device of the sampling type uses two signal samples per symbol time and takes a control signal (for a local oscillator which generates the timing signal) given essentially by the product of a reconstruction error signal [e n (to)] appraised at the generic sampling instant (to), multiplied by the difference between the values of the reconstructed symbols, taken at one-half symbol interval [y n (to+T/2), y n (to-T/2)] respectively before and after said sampling instant. The control signal [U n (to)] thus obtained allows generation of a timing signal (CK) which positions with extreme accuracy and stability the sampling instant of the received signal at the minimum points of the mean square error curve, even under selective fading conditions.
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