"Wireless" TV Cable??

I have TV in my room at one side, and the aerial socket at the otherside,

so this means if i want to watch tv, i have to get a long aerial cable right across the room to the other side.

is there any Wireless aerial adapters i can get, like a small dongle? confused



the wall aerial socket is right smack bang in the middle of the wall.
right above my bed. (dam these new houses, poorly designed!)

and also, cheap/ish?


thanks very much,

Chris