satellite communication:

satellite communication is a space station that receives microwave signals from earth-based station. it implies the signals and retransmits than back to different earth-based stations.

   the satellite communication is placed about 22300, miles above the earth. The transmission from earth based station is  earth based station  to satellite is called uplink. the transmission from  satellite to earth-based station is called downlink.

     the data transmission of satellite communication is very high. however, bad weather  can effect the quality of satellite transmission. satellite communication  is used in different applications  such as television  and radio broadcasts, 

weather forecasting,  global posting system and internet connections etc.

Broadcast Radio:

 broadcast radio is a wireless transmission medium. it distributes radio signals through  the air over long and short distances. radio transmission  requires a transmitter to send broadcast radio signals  and a receiver  to receive it.

  an example of short-range  broadcast radio communication is Bluetooth.

CELLULER COMMUNICATION:

 cellular communication  is a wireless communication system. it is widely used all over cells.  a cellular communication system  is used to transmit text, images, voice, and video. cellular communication  divides  a physical range into different sections known as cells. for example a city can be  divided into small cells. each cell has a  low powered  radio transmitter\receiver. these cells are linked together to enable  a large  number of cellular phones to communicate with one another.....