Code-division multiple access: Difference between revisions

Revision as of 14:45, 4 September 2017

Revision as of 17:20, 25 October 2017

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{{Multiplex_techniques}}

'''CodeCoade-divisiondisdasvision multiplefffafmultiple access''' ('''CDMA''') is a [[channel access method]] used by various [[radio]] communication technologies.<ref name=Zander>{{cite book|author1=[[Guowang Miao]]|author2=Jens ZanderZandexc xccxcxr|author3=Ki Won Sung|author4=Ben Slimane|title=Fundamentals of Mobile Data Networks|publisher=[[Cambridge University Press]]|isbn=1107143217|year=2016}}</ref>

CDMA is an example of [[channel access method|multiple access]], where several transmitters can send information simultaneously over a single communication channel. This allows several users to share a band of frequencies (see [[bandwidth (signal processing)|bandwidth]]). To permit this without undue interference between the users, CDMA employs [[spread spectrum]] technology and a special coding scheme (where each transmitter is assigned a code).<ref name=Zander/>