I Want to Implement a 2.4Ghz NLOS WDS in my area in the city but there is a lot of Noise and Other Networks, I want to know the best RouterBoards & Atennas to use and the best configurations for such a network.
P.S. I Want to use Omni Antennas Only and I want the Signal to get into each house so they connect to the internet using a USB Wi-Fi or a Laptop Wi-Fi. 
Thanks in Advance.
oooooh yesss!!! 
Your wish is the dream of each wisp of the world.
You must choose free frequencies (as low as possible: 100MHz?), have a lot of antennas in your city (one or more each building side) or use a lot of power or have a city with 10 houses.
Another solution is: use outdoor antennas (better in hiperlan if 2.4GHz is busy) connecting them to your base stations by wlan and to the 802.11bg repeater of each customer by ethernet. In the streets and places use hotspots.
Good work!