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題名 | 非線性數位相位同步器分集合併的錯位現象=Misalignment for Diversity Combining in Nonlinear Digital Carrier Synchronizers |
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作者姓名(中文) | 翁萬德; |
作者姓名(外文) | Weng, Wan-de; |
書刊名 | 技術學刊 |
卷期 | 12:4 1997.12[民86.12] |
頁次 | 頁683-688 |
分類號 | 448.6 |
語文 | chi |
關鍵詞 | 非線性數位同步器; 數位通信; 錯位現象; 分集技術; Nonlinear phase synchronizer; Digital communications; Misalignment phenomenon; Diversity techniques; |
中文摘要 | 本文討論在衰落通道中,非線性相位同步器的性能。 如果通信系統中使用分集技 術,那麼傳輸的位元錯誤率會被所謂的「錯位現象」影響而大大提高。文中除了描述錯位現 象的成因及影響外,也提出了解決之道。經過實驗證實,本文提出的方法能在不大量增加系 統成本的前提下,有效去除錯位現象造成的困擾,這使得非線性相位同步器能被成功應用的 衰落通道中。相較於鎖相迴路在於衰落通道中使用的種種限制,本文或可為系統設計時之重 要考量。 |
英文摘要 | In this paper we discuss the performance of nonlinear phase synchronizers in fading channel communications. If diversity techniques are used in the system, the bit error rate performance of transmission will be severely affected by the misalignment phenomenon. The cause and influence of misalignment phenomenon are described in this paper. Also we have proposed a misalignment-free receiver structure. The simulation results show that the system proposed here can effectively remove the misalignment in an economical way. This makes possible the use of nonlinear phase synchronizers in fading channels. Since the phase-locked loops suffer from several limitations when used in fading channels, the system proposed in this paper may become an alternative for system designs. |
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