发明申请
- 专利标题: METHOD AND DEVICE FOR CLOCK SYNCHRONISATION WITH A VESTIGIAL-SIDEBAND-MODULATED TRANSMITTED SIGNAL
- 专利标题(中): 用于时域同步传输信号的方法和装置
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申请号: US11302320申请日: 2005-12-13
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公开(公告)号: US20070222495A2公开(公告)日: 2007-09-27
- 发明人: Jochen Pliquett , Thomas Reichert
- 申请人: Jochen Pliquett , Thomas Reichert
- 申请人地址: DE Muenchen D-81671
- 专利权人: Rohde & Schwarz GmbH & Co. KG
- 当前专利权人: Rohde & Schwarz GmbH & Co. KG
- 当前专利权人地址: DE Muenchen D-81671
- 优先权: DE102004059956.4 20041213
- 主分类号: H03D1/24
- IPC分类号: H03D1/24 ; G06G7/25
摘要:
A method for clock synchronisation between an amplitude-modulated or phase-modulated received signal (r(t)) and a transmitted signal (s(t)) estimates the timing offset (ε) between the received signal (r(t)) and the transmitted signal (s(t)) by means of a maximum-likelihood method. The maximum-likelihood method in this context is realised by an estimation filtering (S40; S140) dependent upon the transmission characteristic, a subsequent nonlinear signal-processing function (S50; S150) and an averaging filtering (S60, S100; S180, S200) The received signal (r(t)) is especially a modified vestigial-sideband-modulated received signal (rVSB′(t)). The nonlinear signal-processing function (S50; S150) maintains the alternating component in the spectrum of the pre-filtered vestigial-sideband-modulated received signal (vVSB′(t)).
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