In your situation where you have a obstruction that wireless pretty much will not penetrate well you only option is to not use wireless.
Can Wifi Penetrate Walls. Would not pose a problem to the wifi access. But in this question , the answers are w.r.t to or in comparison with microwaves , their absorption and certain other things.
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So, my concern is along the same line made in mark's comment. I can watch it the router is on my desk and there to walls that are about 4 feet high i guess the signal goes thru then a floor would putting the router up higher help it skip the walls and just penetrate the floor. I live in a quite old building and my apartment walls are very thick, so the signal is obviously having trouble to get through them , i recently updated my.
There are also a few tricks you can try to troubleshoot your network issues.
My wifi has a good range but i have bad signal? I know wifi cannot penetrate cement walls, so i wonder if it could penetrate my bed room doors as it's made of wood. So, my concern is along the same line made in mark's comment. Wired wifi extenders use the home's existing ethernet wiring or cable tv coax (using a standard technology called moca) to extend the wifi network into a far corner of the home.
