CDMA – Code-Division Multiple Access

Short for Code-Division Multiple Access, a digital cellular technology that uses spread-spectrum techniques. Unlike competing systems, such as GSM, that use TDMA, CDMA does not assign a specific frequency to each user. Instead, every channel uses the full available spectrum. Individual conversations are encoded with a pseudo-random digital sequence.

CDMA consistently provides better capacity for voice and data communications than other commercial mobile technologies, allowing more subscribers to connect at any given time, and it is the common platform on which 3G technologies are built.

CDMA is a military technology first used during World War II by English allies to foil German attempts at jamming transmissions. The allies decided to transmit over several frequencies, instead of one, making it difficult for the Germans to pick up the complete signal. Because Qualcomm created communicationschips for CDMA technology, it was privy to the classified information. Once the information became public, Qualcomm claimed patents on the technology and became the first to commercialize it.

Vangie Beal
Vangie Beal
Vangie Beal is a freelance business and technology writer covering Internet technologies and online business since the late '90s.

Top Articles

The Complete List of 1500+ Common Text Abbreviations & Acronyms

UPDATED: This article was updated April 6, 2021 by Web Webster   From A3 to ZZZ we list 1,559 text message and online chat abbreviations to...

How to Create a Website Shortcut on Your Desktop

UPDATED: This article was updated April 6, 2021 by Web Webster   This Webopedia guide will show you how to create a desktop shortcut to a...

Windows Operating System History & Versions

The Windows operating system (Windows OS) refers to a family of operating systems developed by Microsoft Corporation. We look at the history of Windows...

What are the 5 Generations of Computers?

UPDATED: This article was updated on April 6, 2021 by Web Webster   Learn about each of the 5 generations of computers and major technology developments...

Hackerspace Definition & Meaning

What is a hackerspace? A hackerspace, also known as a hacklab, incubator, or hackspace,...

Random Access Memory (RAM)...

UPDATED: This article Updated April 6, 2021 by Web Webster   Random Access Memory (RAM)...

OEM – original equipment...

UPDATED: This article was updated April 6, 2021 by Web Webster OEM (pronounced as...