Introduction to the EDGE standard
(Enhanced Data Rates for GSM Evolution.
) standard is an evolution of the GSM standard that modifies the type of modulation. Like the GPRS standard, the EDGE standard is intended to be a transition to third generation mobile telephony (3G). The term 2.75G is also used to describe the EDGE standard.
EDGE uses a different modulation than the modulation used by GSM (EDGE uses 8-PSK modulation), which means that base stations and mobile terminals need to be modified to support it.
EDGE increases the data rate by a factor of 3 but with a smaller coverage area. In theory, EDGE supports throughput of up to 384 Kbit/s for fixed stations (pedestrians and slow vehicles) and up to 144 Kbit/s for mobile stations (fast vehicles).
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