introduction to gsm - Introduction to GSM History of...

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Unformatted text preview: Introduction to GSM History of Cellular Mobile Radio and GSM(Global Systems for Mobile) & Early 1980s there was analog technologies: ¡ Advanced Mobile Phone Services(AMPS)in North America. ¡ Total Access Communications System(TACS) in the UK. ¡ Nordic Mobile Telephone(NMT) in Nordic countries. & Each country developed its own system, which caused problems: ¡ System worked only within the boundaries of each country. ¡ Mobile equipment manufacturers markets were limited by the operating system. Solution was GSM, which is digital technology and was developed by CEPT(Conference of European Posts and Telecommunications) & The Goals of GSM ¡ Improved spectrum efficiency ¡ International roaming ¡ Low-cost mobile sets and base stations ¡ High-quality speech ¡ Compatibility with ISDN and other telephone company services. ¡ Support for new services ¡ QoS GSM facts(2001) & Used in over 170 countries & Over 400 GSM network operators & Over 550 million people were subscribers to GSM GSM...
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introduction to gsm - Introduction to GSM History of...

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