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. Such items like cell phones, remotes for toy cars and TVs, PDAs, radio devices and walkie-talkies can all be put in this group. 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. The main device that everyone typically thinks of when they hear ?wireless communications? is a cell phone or mobile wireless communications.
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Martin Cooper is considered to be the father of mobile wireless communications. He succeeded in making the first call from a wireless telecommunications device in 1973. The cell phone has seen a lot of change and evolution since then. Back then the cell phone only had the simple features of being able to send and receive calls very different from the cell phones now which are multifunction devices. 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. Some of today?s cell phones also boast 30 hours of talk time, as compared to then available talk time of only 35 minutes.
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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 enabled the 2G phones to transmit not only the analog voice signals, but also the digital data signals. This revolutionized the whole idea of mobile wireless communications, as the PDAs and GPRS and WAP came into the picture. Due to their smaller size the phones today are more portable than ever. Also, as the carriers were now able to guarantee non-interference of signals over an area even with increased subscribers, mobile usage increased dramatically.
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Mobile communications is now in the third and fourth generation, or in everyday terms 3G and 4G. These would provide features like WLAN and WiMAX which would enable all the future devices to have exclusive IP addresses. Thanks to Martin Cooper we have traveled a long way in the terms of mobile wireless communications.
Tags: mobile wireless communications, signals ?
Source: http://i-phonecells.com/2012/11/the-humble-beginnings-of-mobile-wireless-communications/
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