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Overview of Wireless WAN Technologies by Krishna Jeyakumar is a document available to read on EtoBox.
What is Overview of Wireless WAN Technologies about?
1) The document discusses first generation wireless networks including Nordic Mobile Telephone (NMT) and Advanced Mobile Phone System (AMPS). 2) NMT was an analog cellular network launched in 1981 in Nordic countries using 450MHz and 900MHz frequency bands. It supported voice calls and basic text messaging between handsets. 3) AMPS was the first cellular network system deployed in North America in the 1980s using 800MHz and 900MHz bands. It used frequency division multiple access (FDMA) to divide frequenc
- Author
- Krishna Jeyakumar
- Language
- EN