The document is a lecture on wireless networks that discusses cellular systems. It outlines four key elements of cellular networks including low power transmitters to limit cell coverage areas, frequency reuse between cells, handoff between cells, and cell splitting to increase capacity. The lecture also provides an overview of the evolution of cellular network standards, mentioning 1st generation analog systems like TACS and NMT as well as 2nd generation digital technologies including N-AMPS, TDMA, E-TDMA and CDMA-based systems.
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Chapter 2 wireless and personal communication systems
5. Concepts of Cellular Networks
There are four essential elements for cellular
networks
Low Power Transmitter and small coverage areas
or cells
Frequency reuse
Handoff and central control
Cell splitting to increase call capacity
6. 1st Generation Cellular Networks
Total Access Communication System (TACS)
Nordic Mobile Telephone System (NMTS)
Japanese Nippon Telephone and Telegraph
(NTT)