yes!
To provide communication services between mobile users.
In the sense of a mobile communication: Downlink frequency is that used by a base station to communicate with the Mobile. In satellite communication also the same theory exists downlink is the return path.
bluetooth, infrared wi-fi, wi-max, gps, remote control, wap, radio communication, satellite & mobile communication
In satellite communication uplink (transmission of signal from earth station to satellite ) & downlink (reception of signal from satellite to earth station) takes place TX & RX involves a finite amount of delay which is acceptable in data communication, but i audio & video TX this delay is unacceptable, overlapping/ alaising causes errors which demodulated by qpsk.
satellite is satellite
The purpose of communications satellites are to provide telecommunication for companies around the world. In addition, communication satellites are also used for mobile applications such as communication to ships, vehicles, and planes.
definition of optical satellite communication
The first communication satellite was Echo NASA
The only time a mobile needs to use a satellite - is for international calling. Domestic mobile calls are handled by the network of repeater masts.
Most of the satellites are for communication - such as tv/radio and mobile phones. There are also the satellites of the Global Positioning System and military satellites.
Personal computers Pocket calculators mobile phones satellite communication systems
Why Fresnel zone affecting satellite and ground communication?