Not that I'm aware of. The video card would have to transmit the picture wirelessly. There may be some after-market (Non-Samsung) products that allow you to have a wireless video signal, but I can't think of any off the top of my head. Running either HDMI or the 15-Pin D-Sub cable is the only way I'm aware of actually using the television as a monitor for a PC.
I have a 55 inch Series 7 LED TV, I also have the Samsung wireless adapter, is there any way to use my TV as a PC screen without hard wiring it? I have spent a lot of cash to have this advanced piece of kit and trailing a wire across the room to connect to my pc seems prehistoric.