V2EX time-division multiplexing

Time-division multiplexing

Definition 定义

时分复用(TDM):一种通信/传输技术,把同一条物理信道的传输时间切分成多个时间隙(time slots),不同用户或不同数据流在各自的时间隙内轮流发送数据,从而共享同一信道。(常见于电话通信、数字传输、某些网络与工业通信系统中;与频分复用 FDM 相对。)

Pronunciation 发音(IPA)

/tam dvn mltplks/

Examples 例句

Time-division multiplexing lets several signals share one cable by taking turns in time.
时分复用让多个信号通过在时间上轮流发送来共享一根电缆。

In a TDM system, tight clock synchronization is essential; otherwise, data from different channels can overlap and cause errors.
在时分复用系统中,精确的时钟同步至关重要;否则不同信道的数据可能重叠并引发错误。

Etymology 词源

该术语由三部分构成:time-division(时间划分)+ multiplexing(复用/多路复用)。Multiplex 源自拉丁语词根 **multi-**(多)+ -plex(折叠/重叠),引申为“把多路信号叠加到同一传输系统中”。“时分复用”这一类概念在20世纪电话与数字通信的发展中普及,用于提高线路利用率与系统容量。

Related Words 相关词

Notable Works 出处与常见文献

  • 《Computer Networks》(Andrew S. Tanenbaum, David J. Wetherall):在多路复用与链路/传输相关章节中讨论 TDM 等技术。
  • 《Data and Computer Communications》(William Stallings):介绍数字传输、复用方式与系统设计时常提到 TDM。
  • 《Digital Communications》(John G. Proakis, Masoud Salehi):在数字通信基础与多路复用相关内容中涉及 TDM 概念与应用。
  • ITU-T 数字传输相关建议书(如与 PCM/E1/T1 体系相关的标准文档):TDM 是传统数字电话干线的重要基础概念。
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