Abstract: In Sensor network Sensor node has a limited source of power. So, it is essential to have long lifetime of network by energy effective routing. To have consistent long lifetime among sensor nodes, it is prerequisite to utilize efficient clustering algorithm. LEACH is a well known routing protocol based on cluster, but it has several disadvantage about short network lifetime because of the inefficient energy consumption. Here analysis of variants of LEACH namely LEACH-E, MODLEACH, Distance-LEACH is done using MATLAB. Simulation results show that the three variant protocol performs better than LEACH in terms of the parameters under consideration. The paper will be concluded by mentioning the observations made from analyses of results about these.
Keywords: LEACH; LEACH-E; MODLEACH; Distance-LEACH, Clustering.