History of Cellular Telecommunication

History Of Cellular Telecom Industry:

It all started with Sir Humprey Davy when he was observing an experiment that when a location finders metallic needle was deflected when near to it current was allowed to flow through a wire.

Sir Humprey Davy

In those days his lab assistant was "Sir Michael Faraday" who then place a vertical wire and allowed the current to flow through it and placed location finder instruments all around it and observed every instruments needle location and proved that there exists a magnetic field when current flows through a wire then doing more experiments he proved that varying magnetic fields can produce electric field and proved that electromagnetics exists and later he proposed the concept that light is and electromagnetic wave but did not so much mathematical background to support it.

Sir Michael Faraday

Later on his friend "Sir James Clerk Maxwell" combined the equations of Sir Faraday, Sir Ampere and Sir Gauss and proved the existence of electromagnetics waves and proved that electromagnetic waves can travel in free space if it satisfied the four laws of electromagnetics which he stated. Also the waves would travel with a speed of light. The varying electric field will create magnetic field and the varying magnetic field will in turn create electric field with the speed of light. With this he proved that light is and electromagnetic wave proving his friend Sir Faraday right.

Sir James Clerk Maxwell

Then "Sir Helmholtz" equation further simplified the equations of Maxwell. His time harmonic deduction for derivatives proved a lot helpful to maxwells equation. Sir Helmholtz's student was "Sir Heinrich Rudolph Hertz". Sir Helmholtz asked Sir Hertz one day to create a project to prove radiation of electromagnetic waves in his early day of PhD but Sir Hertz was not having those advanced mathematics as strong to prove those things.

Sir Hermann von Helmholtz

Sir Heinrich Rudolph Hertz

But later on Sir Hertz having acquired immense knowledge in this field he created a setup as shown below and proved the radiation of radio waves by transmitting sparks from one point to another.

Hertzian Antenna

Later "Sir Jagdish Chandra Bose" was the one to conduct a long distance radio transmission and the first to design a radio communication. He was Indian pioneer of Radio Communication. IEEE named his as a Father of Radio Science. He has done a pioneering work in Radio Science. He was a student of Sir Lord Rayleigh Creator of Rayleigh scattering, Rayleigh distribution.

Sir Jagdish Chandra Bose

But "Sir Guglielmo Marconi" was credited for being making the first long distance transantlantic communication. 

Sir Guglielmo Marconi

Later on due to world war there was lot of demand on communication. On one side due to invention of wired telephone by Sir Alexander Graham Bell wired communication was on boom. Then in 1971 due to introduction of cellular concept by Bell Labs Mobile Communication Originated.

Sir Alexander Graham Bell

IMT-2000: (The ITU definition of 3G Mobile)

IMT-2000 offers a family of radio interfaces for third generation mobile services which provide smooth evolution paths to 3G from the various widely deployed existing 2G mobile networks. IMT-Advanced is currently under study to define the fourth generation (4G) of mobile communications.

At the 2007 Radiocommunications Assembly a sixth radio interface, OFDMA TDD WMAN, a derivative of IEEE 802.16e (Mobile WiMax), was added to the IMT-2000 radio options.

In November 2007 the total number of mobile subscriptions was equivalent to half the world’s population. IMT-DS, IMT-MC and IMT-SC are being extensively deployed throughout the world, with over 800 million IMT subscriptions at the end of 2007, served by almost 700 networks in over 100 countries. It is estimated that by 2010 the majority of global mobiles will incorporate one of these ITU standardized IMT radio technologies.