Kyounghwa Lee et al. in [2] tried to improve the
performance of clustering with Distance and Density based
Cluster Head Selection (DDCHS) algorithm. Evaluation
parameters used for the performance are communication cost
and energy consumption, obtained results shows that DDCHS
algorithm has improves the network lifetime about 50% better
than LEACH and about 10 % better than hybrid energy
efficient distributed (HEED) protocol.