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公开(公告)号:US5297169A
公开(公告)日:1994-03-22
申请号:US723266
申请日:1991-06-28
申请人: Tomas Backstrom , Torbjorn Ward , Gustav Larsson
发明人: Tomas Backstrom , Torbjorn Ward , Gustav Larsson
CPC分类号: H04L25/03178 , H04L2025/03401 , H04L2025/03789 , H04L2025/03796 , H04L7/033 , H04L7/041
摘要: Reception of a transmission in a radiotelephone system including an equalizer is improved by training the equalizer using a synchronization portion of the transmission having a data pattern chosen for its correlation properties and retraining the equalizer using a portion of the transmission transmitted for a different purpose. In particular, the portion of the transmission transmitted for a different purpose may be the digital verification color code transmitted during each burst in a digital cellular mobile radiotelephone system. Reception quality is increased by training the equalizer at more frequent intervals without increasing transmission overhead.
摘要翻译: 通过使用具有为其相关属性选择的数据模式的传输的同步部分来训练均衡器来改善包括均衡器的无线电话系统中的传输的接收,并且使用为不同目的发送的传输的一部分重新训练均衡器。 特别地,为了不同目的而发送的传输部分可以是在数字蜂窝移动无线电话系统中的每个突发期间发送的数字验证色码。 通过以更频繁的间隔训练均衡器来增加接收质量,而不增加传输开销。
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2.
公开(公告)号:US5299235A
公开(公告)日:1994-03-29
申请号:US757296
申请日:1991-09-10
申请人: Gustav Larsson , Karim Jamal
发明人: Gustav Larsson , Karim Jamal
CPC分类号: H04L7/0334 , H04L7/04
摘要: A method for improving time synchronization of digital data signals in receivers by using more than one known data sequence to provide a plurality of timing recovery functions and based on these, one or more optimal sampling points. By using existing data sequences in each frame, the disclosed method provides improved time synchronization without increasing transmission overhead.
摘要翻译: 一种用于通过使用多于一个已知数据序列来提高接收机中的数字数据信号的时间同步的方法,以提供多个定时恢复功能,并且基于这些,一个或多个最佳采样点。 通过使用每个帧中的现有数据序列,所公开的方法提供改进的时间同步而不增加传输开销。
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