White Space Radio|Next Generation Communication

White Space Radio|Next Generation Communication 

"Everything you need to know about White Space"

"White  Space" refers to the unused broadcasting frequencies. According to Center for white space communicaton, white space is termed as-"parts of the radio spectrum that are not utilized all of the time or in all geographical locations". 

Since,there are many frequencies which are divided into different spectrum by international and national authority for different purposes. So among those frequency also, there is frequency gap maintained to mitigate the interference among the divided frequency- which is called guard band or guard frequency.

Beside, guard frequency; the switch-over of analog TV to Digital TV have leftover unused many frequency. Since, digital transmission broadcast many signals by compressing in parallel which on conclusion left unused frequency. So such frequency is termed as white space. And the technology is termed as white space technology.

To use such white space frequency, special devices known as White space devices(WSD) have to be used. The WSD have to be present to both sides. The WSD are designed to detect the presence of existing but unused areas of frequency and utilize these unused frequency for internet connectivity or other broadcasting purpose. Currently the WSD are manufactured by Adaptrum, Carlson wireless, Redline communications,etc.

Tech company like Microsoft, Google, Nokia, BBC too have been keen motivated in upgrading of White space radio. They have been doing research in different university and lab of different country. United states, United kingdom, Canada have been doing trail in various states. 
In July 2013, West Virginia University became the first university in the United States to use vacant broadcast TV channels to provide the campus and nearby areas with wireless broadband internet service. 

There is much more potential in developing countries and in rural areas. Developing countries yet have not access to internet connectivity to school and houses. 
The cell tower once established can serve upto 10 km in distance so this helps in point to point connectivity for long distance. 

Kenya, South Africa, Namibia are the countries where there have been use of white space to deliver the internet connectivity in rural areas and schools. Soon other developing countries of Africa and Asia will be adopting this White Space radio. India on making "Digital India" will make better utilize of this radio.