Global System for Mobile communications – the world’s most widely used digital cellular communication standard. GSM is a digital cellular standard that provides a platform for wireless communication of mobile devices.
It uses three frequency ranges: 1900 ÌÃö in the United States and 900 MHz & 1800 MHz in Europe, including Russia. Typically, phones support only two ranges (European), but there are models that operate in all three ranges. For duplexing, Frequency Division Multiple Access (FDMA) and Time Division Multiple Access (TDMA) technologies are used.
The GSM cellular network uses digital protocols to ensure data exchange between devices. The network is divided into cells served by base stations. A base station communicates with devices within its cell, while the cells are interconnected by wired or wireless channels to form the network.
The GSM standard employs GMSK modulation.
Currently, GSM is the most widespread communication standard. According to the GSM Association (GSMA), this standard accounts for 82% of the global mobile communications market, and 29% of the world’s population uses global GSM technologies.
Related articles:
GSM-900 frequencies,
GSM-1800 frequencies,
EGSM,
GPRS,
3G
TDMA
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