Evolution of wireless communication,electromagnetic waves, mobile phones, satellites, telecommunication
Evolution of wireless communication Communication between two communications devices can basically classified as follows a. wired communication b. wireless communication Our focus is on only mobile phone and cell phone. Before mobile phone [wireless communication], telephone came into existence. 1876 -telephone was invented by Alexander Graham bell 1881-in Berlin public telephone service was started [wired circuit switching network]. In early 18 century wireless communication was existing through optical medium. The wireless communication boomed only after invention of electromagnetic waves by Michael Farady. 1907-the first commercial transatlantic connection were setup using huge base stations. On both side. 1920-marconi discovery of short waves gets reflected ionosphere. This helps to sent wireless messages around the world bouncing at the iono...