Editing Code-division multiple access (section)

== Uses ==
[[File:Au CDMA 1X WIN W31SAII gravelly silver expansion.jpg|thumb|A CDMA2000 [[mobile phone]]]]

* Synchronous CDM (code-division 'multiplexing', an early generation of CDMA) was implemented in the [[Global Positioning System]] (GPS). This predates and is distinct from its use in [[mobile phone]]s.
* The [[Qualcomm]] standard [[IS-95]], marketed as cdmaOne.
* The Qualcomm standard [[IS-2000]], known as CDMA2000, is used by several mobile phone companies, including the [[Globalstar]] network.{{refn|group=nb|Globalstar uses elements of CDMA, [[time-division multiple access|TDMA]] and [[FDMA]] combining with satellite multiple beam antennas.<ref>M. Mazzella, M. Cohen, D. Rouffet, M. Louie and K. S. Gilhousen, "Multiple access techniques and spectrum utilisation of the GLOBALSTAR mobile satellite system," Fourth IEE Conference on Telecommunications 1993, Manchester, UK, 1993, pp. 306-311.</ref>}}
* The [[UMTS]] 3G mobile phone standard, which uses [[W-CDMA]].{{refn|group=nb|The UMTS networks and other CDMA based systems are also known as a kind of ''interference-limited'' systems.<ref>{{cite book|editor-last1=Holma|editor-first1=H.|editor-last2=Toskala|editor-first2=A.|date=2007|url=https://books.google.com/books?id=7m-MnwW_o7AC&q=lte+umts+are+interference+limited&pg=PT439|title=WCDMA for UMTS: HSPA Evolution and LTE|publisher=[[Wiley (publisher)|John Wiley & Sons]]|isbn=9781119991908}}</ref><ref>{{cite book|editor-last1=Laiho|editor-first1=J.|editor-last2=Wacker|editor-first2=A.|editor-last3=Novosad|editor-first3=T.|date=2002|url=https://books.google.com/books?id=9RE32TlXZBQC&q=is+umts+interference+limited+systems&pg=PA303|title=Radio Network Planning and Optimisation for UMTS (Vol. 2)|location=New York|publisher=[[Wiley (publisher)|John Wiley & Sons]]|page=303|isbn=9780470031391}}</ref> This relates to the properties of the CDMA technology: all users operate in the same frequency range that impacts [[Signal-to-interference-plus-noise ratio|SINR]] and, hence, reduces coverage and capacity.<ref name="Walke-Seidenberg-Althoff_2003">{{cite book |title=UMTS: The Fundamentals |author-first1=Bernhard H. |author-last1=Walke |author-link1=Bernhard Walke |author-first2=Peter |author-last2=Seidenberg |author-first3=Marc Peter |author-last3=Althoff |translator-first=Hedwig Jourdan |translator-last=von Schmoeger |date=March 2003 |orig-date=2001 |publisher=[[John Wiley & Sons, Ltd]] |edition=First English |isbn=0-470-84557-0 |pages=18–19 |url=https://books.google.com/books?id=KRlUvPWeTYQC&pg=PA18}} (NB. Based on the 2001 German edition.)</ref>}}
* CDMA has been used in the '''OmniTRACS''' satellite system for transportation [[logistics]].