Cellular system in body

Cellular communications systems are wireless mobile communications systems that divide a large geographic area into smaller sections or cells, each with a low-power wireless transmitter, for the purpose of optimising the use of a limited number of frequencies.

Advantages of the cellular system : Less transmission power . Reduced set up times. It reduced the interference which increases the total system capacity. It improved S/N ratio. Reduced the cluster size.

A basic cellular system consists of three parts: a mobile unit, a cell site, and a Page 8 mobile telephone switching office (MTSO) , as Fig 1.6 shows, with connections to link the three sub systems.

In a cellular system, as the distributed mobile transceivers move from cell to cell during an ongoing continuous communication, switching from one cell frequency to a different cell frequency is done electronically without interruption and without a base station operator or manual switching.