Concept:

The cell splitting achieve the capacity improvement by essentially rescaling the cellular system

By decreasing the cell radius R and keeping the co-channel reuse ratio D/R unchanged, cell splitting increases the number of channels per unit area

The cell splitting is the process of subdividing a congested cell into small cells with its own base station having the corresponding reduction in the antenna heights and the transmitted power Cell splitting helps in increasing system capacity:

Cell splitting increases the capacity of a system since it increases number of times that channels are reused.

In cell splitting original cell is split in to smaller cells. New cell radius is half of the original radius.

In this the cell boundaries need to be revised so that the local area which was earlier considered as a single cell can now contain number of smaller cell ,these new cells are called microcells.