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| Standards > Data Transmission Standards > Modulation Techniques > |
CDMA
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DEFINITION: What is Code-Division Multiple Access (CDMA)?Also see CDMA One, CDMA2000, and W-CDMA. CDMA (Code-Division Multiple Access) refers to any of several protocols used in so-called second-generation (2G) and third-generation (3G)
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CDMA DEFINITION (continued): … wireless communications. As the term implies, CDMA is a form of multiplexing, which allows numerous signals to occupy a single transmission channel, optimizing the use of available bandwidth. The technology is used in ultra-high-frequency ( UHF) cellular telephone systems in the 800- MHz and 1.9- GHz bands. CDMA employs analog-to-digital conversion (ADC) in combination with spread …
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