I am solving a problem of transferring images from a camera in a loop from a client (a robot with camera) to a server (PC).
I am trying to come up with ideas how to maximize the transfer speed so I can get the best possible FPS (that is because I want to create a live video stream out of the transferred images). Disregarding the physical limitations of WIFI stick on the robot, what would you suggest?
So far I have decided:

to use YUV colorspace instead of RGB
to use UDP protocol instead of TCP/IP

Is there anything else I could do to get the maximum fps possible?
This might be quite a bit of work but if your client can handle the computations in real time you could use the same method that video encoders use. Send a key frame every say 5 frames and in between only send the information that changed not the whole frame. I don't know the details of how this is done, but try Googling p-frames or video compression.
How to speed up transfer of images from client to server