1.1 Frequency division multiple access (FDMA) FDMA is the most basic way of creating channels, by assigning users to nonoverlapping frequency bands, it was used in first and 2G cellular systems . In a system with N users and a total bandwidth W, each user can be assigned a bandwidth of W/N.
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1G supports voice only calls. 1G is analog technology , and the phones using it had poor battery life and voice quality, little security, and were prone to dropped calls. The maximum speed of 1G technology is 2.4 Kbps.
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