Network Optimizer - Example in indoor environment

Introduction

This is an example of an optimization project of an indoor CDMA network. As shown in the picture below there are 16 sites located inside the building.

The network optimizer is used to determine the relevant sites to achieve a good coverage. The goal of the optimization is not to get a network configuration which is able to offer the highest service everywhere, but to have all areas covered in the building.

Cell Areas

The following image shows the cell areas of the active transmitters after optimization. From 16 transmitters, 4 transmitters are considered as relevant by the network optimizer. The white circles show transmitter locations and the circles with inner circles show the active transmitters after optimization.

The total area is covered, even with only four transmitters.

Interference

The image below shows the Eb/No in the indoor area. The selection of the relevant transmitters is also based on the Eb/No thresholds defined by the user. Here the minimum required Eb/No is 4 dB - and this requirement is met everywhere.

Detailed evaluation of results

The results obtained by the network optimizer are presented in a table.

In this case the total coverage is only about 26% as pixels outside the building are not considered. This means about 74% of the pixels are located in the outside area and are not counted for the evaluation.

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