The Humble Beginnings Of Mobile Wireless Communications
Wireless communication is, as the name suggests, communication between devices which are not physically connected with the help of wires. An assortment of these we utilize in our everyday life such as remotes for the TV or toy cars, cellphones, walkie-talkies, PDAs, or even radio devices. The most recent use that wireless communication technology has been put to is the variety of wireless headphones, keyboards and even your mouse for computers, and also the GPS tracking in your car which tells you the best route to your destination. Most people when they think of wireless communications immediately think of cell phones or mobile wireless communications.
Martin Cooper is considered to be the father of mobile wireless communications. In 1973 he succeeded in making the first call from a wireless telecommunications device. The cell phone has seen a lot of change and evolution since then. Receiving and making calls were the only thing that the first cell phone was able to do; very different from the phones today which have so many components. They can not only make and receive calls, but also has a host of very advanced features such as internet connectivity, thanks to the Wireless Application Protocol or WAP and other such technologies. The talk time on phones today is over 30 hours on some phones, compared to the 35 minutes back then it is a huge advancement.
Early cell phones, or as we can call them the first generation or 1G cell phones, used to depend on the analog TDMA or Time-Division Multiple Access technology alone for communication; then came the 2G or second generation of mobile phones, which depended on the CDMA and the GSM technologies. This feature allowed the 2G phones to be able to use the voice analog signals along with the data digital signals. This revolutionized the whole idea of mobile wireless communications, as the PDAs and GPRS and WAP came into the picture. The phones now are much more portable thanks to their smaller size. Also, as the carriers were now able to guarantee non-interference of signals over an area even with increased subscribers, mobile usage increased dramatically.
Now we are entering the third and fourth generation of mobile communications, more regularly known as 3G and 4G. These would provide features like WLAN and WiMAX which would enable all the future devices to have exclusive IP addresses. We have come a long way since Martin Cooper brought mobile wireless communications to the world with his advancement of the mobile phone.
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