Dear All , I Read Many Comments on Archive and Ns Coding: I know that a Cross Over Paramete exist For differing Between Short and Long Distance Propagation Model on Using Two-RayGround Model. If Below of "Cd" Use Friis Equation but on higher than It uses Main Two-ray Ground Equation.
The packet signal strength is compared against CSThresh_ and RxThresh_ of the physical interface. If the Pr < CSThresh_ then the packet is dropped as noise. If RxThresh_ < Pr < CSThresh_ the packet will be marked as packet error prior to be passed to MAC layer and Set its (EIFS)<--- . Is this true? In My idea CSThresh Equal with WLAN 802.11 b Reciever Sensivity.Because Interface sense packets(may be noisy). Is this True? But How Can I Calculate CSRange And RXrange For Node Positioning? On Threshold.cc file but it can tell me only Pr on special distance and distance be its input parameters. I need a program that I give my Reciever sencivity and pt_ to it and Return me CSRang and RXrange. Or I should use Two Ray Ground Equation for this issue. Best Regards Hamid Reza __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
