enhanced data service for GSM evolution (EDGE)

Enhanced Data Service for GSM Evolution (EDGE) is a mobile communicationssystem that, like High Speed Circuit Switched Data (HSCSD) and General Packet Radio Service(GPRS), is based on the existing GSM infrastructure. It is characterized by the highest transmission rates and is conceptually designed for mobile real-time applications such as video or Internettelephony. Incontrast to High Speed Circuit Switched Data (HSCSD) and General Packet Radio Service (GPRS), where the transmission speed is increased by optimizing error correction, EDGE starts with modulation to achieve a higher data rate. EDGE uses phase shift keying (8PSK), which can be used to transmit eight symbols and thus increase the transmission speed of a GSM channel to up to 59.2 kbit/s. This method uses three bits at a time. With this method, three bits are transmitted simultaneously in a group, with the carrier alternating between eight different phase positions. In contrast, the existing GSMK method, which is used adaptively for heavily disturbed connections, transmits only one bit per transmission step. Data rates of EDGE Data transmission rates of EDGE Depending on the transmission method, Gaussian Minimum Shift Keying(GMSK) results in transmission rates between 8.8 kbit/s per channel and 17.2 kbit/s per channel; with phase shift keying (8-PSK), the values are between 22.4 kbit/s per channel and 59.2 kbit/s per channel. This means that when using all eight channels with Gaussian Minimum Shift Keying (GMSK) in transmission mode

Englisch:	enhanced data service for GSM evolution - EDGE
Updated at:	25.04.2012
#Words:	233
Links:	global system for mobile communications (GSM), mobile communications, system, high speed circuit switched data (mobile communications) (HSCSD), general packet radio service (mobile communications) (GPRS)
Translations:	DE
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