I'm having a problem that I simply can't wrap my mind around. I am setting up a wireless co-op in a small industrial park and am using some Proxim Tsunami gear for the build (we are a very, very small community and therefore broadband services are either prohibitively expensive or non-existent). At the center I have a 15 dBi Omni attached to the AP and at the end-nodes, I have 15.5 dBi directional patch antennas. I am having somewhat of a problem with noise and the SNR values going too low for the QoS I am trying to achieve. One of the installations has line of site - but between two metal buildings. (In fact, all of the buildings in the industrial park are metal...) The beam width of the patch antennas is 25 deg. at -3dBi 45 deg. at -10dBi. I am thinking of trying out a small parabolic grid antenna with a 16 deg. horizontal beam width so that I can "fit" between the buildings without so much reflection. The problem is that if it doesn't work, I'm not sure where to go. I was thinking of amplifying the signal at the center (if my calculations are correct, I can go up to 400 mW at the center without breaking the rules), but I don't know if this is just going to cause more problems as far as noise is concerned - i.e. if I increase the power, won't I increase the noise if it is indeed due to multipath/reflection (which I am assuming it is)? Can anyone offer some advice in this arena?
Thanks in Advance! Steve
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