Code word

For other uses, see Code word (disambiguation).

In communication, a code word is an element of a standardized code or protocol. Each code word is assembled in accordance with the specific rules of the code and assigned a unique meaning. Code words are typically used for reasons of reliability, clarity, brevity, or secrecy.

Background

Coding Theory is the branch of mathematics that covers source codes and channel codes.

A channel code contains redundancy to allow more reliable communication in the presence of noise. This redundancy means that only a limited set of signals is allowed: this set is the code.

A source code is used to compress words (or phrases or data) by mapping common words into shorter words.

Procedure words are used for voice communication on noisy channels.

See also

• Spelling alphabet
• Safeword
• Password
• Marine VHF radio
• Error correction and detection
• Commercial code
• Duress code

References

•  This article incorporates public domain material from the General Services Administration document "Federal Standard 1037C" (in support of MIL-STD-188).
•  This article incorporates public domain material from the United States Department of Defense document "Dictionary of Military and Associated Terms".
• UNHCR Procedure for Radio Communication

External links

• UNHCR Procedure for Radio Communication