Il giorno mar, 07/08/2007 alle 12.47 +0700, Phitsanu Eamsomboon ha scritto:
> How can I increase transmission rage is 1600 m if I use TwoRayGrounf model. > How can I calculate , Please recommend me !!!! Hi, you have to follow this two steps procedure: 1) first you should compute propagation loss at distance 1600 m, using your specific scenario parameters (Pt, frequency, propagation model, ...). Ns-2 has an utility named "threshold" that does this; it is contained in directory "ns-2.31/indep-utils/propagation/". 2) You should set RX and Carrier Sense threshold parameters of wireless channel, using value obtained from "threshold" utility: Phy/WirelessPhy set CSThresh_ YOUR VALUE Phy/WirelessPhy set RXThresh_ YOUR VALUE Best Regards. Busanelli Stefano
