They are divided into bands based on frequencies (see ‘Radio spectrum’). Mobile phones use two technologies based on different parts of the radio spectrum— GSM (global system for mobile communications) and CDMA (code division multiple access). Most of the radio spectrum is reserved in countries for defence.
Read moreWhat is frequency spectrum in communication?
A frequency spectrum in mobile communications is the range of radio frequencies allocated to each mobile network operator (MNO) in their country of operation for transmitting and receiving their RF signals . An MNO can add more cells with more spectrum to improve network capacity and coverage.
Read moreWhat is spectrum and band?
Portions of electromagnetic spectrum are grouped in “bands” depending on their wavelengths—the distance over which the wave’s shape repeats . The full electromagnetic spectrum ranges from three Hz (extremely low frequency) to 300 EHz (gamma rays).
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