Abstract

The implementation of cell and frequency reuse concept can increase service capacity of a mobile communications system. On the other hand the concept will also cause interference problems, the cochannel and adjacent channel interference.

Cochannel interference occur because of the assignment of the same set of frequencies on more than one cell, where adjacent channel interference occur due to imperfect receiving filter which allows disturbance from channels with adjacent frequency.

Reducing the interference effect can be achieved with a good cell planning method. This method will be used to meet the minimum signal to interference ratio (SIR) recommended for each cellular systems. The method will start from the rigorous selection of cell pattern right through the precise assignment of channel set to each cell. The process should also be well maintained from the initial deployment of the cellular system to a more mature system where the system start to be congested and the process of splitting the cells to smaller cells is required.

In achieving the optimum result from cell planning several parameters should be taken into account where manual calculation would be inefficient. Therefore it is necessary to have a cell planning software package which could implement the cell planning concepts.

The aims of this final project is to investigate the cell planning concepts for three of the cellular systems implemented in Indonesia which are : AMPS, NMT450, and GSM. The project also aim on developing a software package which could implement the cell planning concepts for those mobile cellular communications system.