I'm looking for a Wireless Mouse/Keyboard combinaison that would work in a big conference room.

I know their 2 wiresless technology right now ; BlueTooth and the 27 MHz frequency but their range are too small. (Up to 30 feet for BlueTooth is not enough for me and I don't like BlueTooth anyway). I have InfraRouge for my keyboard right now but it's not working very good either because you have to face the receiver.

You guy know any other technology that would work?