Editing Data communication (section)

==Distinction between related subjects==
Courses and textbooks in the field of ''data transmission''<ref name="Clark">A. P. Clark, "Principles of Digital Data Transmission", Published by Wiley, 1983</ref> as well as  ''digital transmission''<ref>David R. Smith, "Digital Transmission Systems", Kluwer International Publishers, 2003, {{ISBN|1-4020-7587-1}}. See [https://www.amazon.com/dp/1402075871 table-of-contents].</ref><ref>Sergio Benedetto, Ezio Biglieri, "Principles of Digital Transmission: With Wireless Applications", Springer 2008, {{ISBN|0-306-45753-9}}, {{ISBN|978-0-306-45753-1}}. See [http://search.barnesandnoble.com/Principles-of-Digital-Transmission-with-Wireless-Applications/Sergio-Benedetto/e/9780306457531#TOC table-of-contents]</ref> and ''digital communications''<ref>Simon Haykin, "Digital Communications", John Wiley & Sons, 1988. {{ISBN|978-0-471-62947-4}}. See [https://www.amazon.com/dp/0471432229#reader_0471432229 table-of-contents].</ref><ref>John Proakis, "Digital Communications", 4th edition, McGraw-Hill, 2000. {{ISBN|0-07-232111-3}}. See [http://www.mhhe.com/engcs/electrical/proakis/toc.mhtml table-of-contents].</ref> have similar content.

Digital transmission or data transmission traditionally belongs to [[telecommunications]] and [[electrical engineering]]. Basic principles of data transmission may also be covered within the [[computer science]] or [[computer engineering]] topic of data communications, which also includes [[computer network]]ing applications and [[communication protocol]]s, for example routing, switching and [[inter-process communication]]. Although the [[Transmission Control Protocol]] (TCP) involves transmission, TCP and other transport layer protocols are covered in computer networking but ''not'' discussed in a textbook or course about data transmission.

In most textbooks, the term [[analog transmission]] only refers to the transmission of an analog message signal (without digitization) by means of an analog signal, either as a non-modulated baseband signal or as a passband signal using an [[analog modulation method]] such as [[Amplitude modulation|AM]] or [[Frequency modulation|FM]]. It may also include analog-over-analog [[Pulse modulation|pulse modulated]] baseband signals such as pulse-width modulation. In a few books within the computer networking tradition, ''analog transmission'' also refers to passband transmission of bit-streams using [[digital modulation]] methods such as [[frequency-shift keying|FSK]], [[phase-shift keying|PSK]] and [[amplitude-shift keying|ASK]].<ref name="Clark" />

The theoretical aspects of data transmission are covered by [[information theory]] and [[coding theory]].