How to convert my USB internet connection into WiFi?

[Sam]

A wireless hotspot enables a computer to serve as a router over Wi-Fi. Ubuntu lets you easily create a wireless hotspot by using the Network Manager, but it uses an ad hoc network and most Android and Windows Phone devices can't connect to such networks.
more info can go there http://www.webupd8.org/2013/06/how-to-se...ccess.html
and a another way
you can do hot spot by your laptop like that
http://www.jailbreakmodo.com/turn-your-l...ongle.html

http://www.youtube.com/watch?v=4smcnHfm2F4