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In the landscape of mobile communication, CDMA, or Code Division Multiple Access, played a pivotal role during the early 2G and 3G eras. It emerged as a major wireless standard, especially in countries like the United States, where carriers such as Verizon and Sprint built large portions of their infrastructure on this technology. CDMA is a method of multiplexing that allows multiple users to share the same frequency band by assigning each user a unique code. This coding technique enables the network to handle multiple conversations simultaneously with minimal interference, resulting in clear voice quality and efficient bandwidth usage.

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