| 词条 | Transmission (telecommunications) |
| 释义 |
In telecommunications, transmission (abbreviations: TX, Xmit) is the process of sending and propagating an analogue or digital information signal over a physical point-to-point or point-to-multipoint transmission medium, either wired, optical fiber or wireless.[1][2] One example of transmission is the sending of a signal with limited duration, for example a block or packet of data, a phone call, or an email. Transmission technologies and schemes typically refer to physical layer protocol duties such as modulation, demodulation, line coding, equalization, error control, bit synchronization and multiplexing, but the term may also involve higher-layer protocol duties, for example, digitizing an analog message signal, and data compression. Transmission of a digital message, or of a digitized analog signal, is known as digital communication. References1. ^{{cite journal |title=Telecommunications Technology Fundamentals |url=http://www.informit.com/articles/article.aspx?p=24687 |journal=informit.com |date=28 December 2001}} {{Telecommunications}}{{DEFAULTSORT:Transmission (Telecommunications)}}{{telecom-stub}}2. ^{{cite journal |title=Telecommunications Media |url=http://www.britannica.com/EBchecked/topic/585825/telecommunications-media/279805/Transmission-media-and-the-problem-of-signal-degradation |journal=britannica.com|date=21 January 2014}} 1 : Telecommunications engineering |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。