Study on cause and countermeasure of transient link in MANET

The theory of large-scale path loss and small-scale signal fading are studied,the inaccuracy of performance analysis for the absence of small-scale fading in current study of MANET is verified.Extension is developed for NS-2 to implement small-scale fading model based on Rayleigh distribution for real wireless channel emulation.By experiment,the impact on communication performance from transient links caused by small scale signal fading is analyzed,and the ideas and measures are proposed to deal with it.