The main objective of this document is to establish the guidelines of the coexistence study that will be carried out in e-SENSE, providing the framework in which the coexistence studies and simulations will be developed, attending to the most relevant user scenarios.

The coexistence analysis will be based on the results of computer simulations, which will assess the Power Spectral Density (PSD) present on the devices that configure the selected “coexistence scenarios”. This will allow obtaining the Signal-to-Interference and Noise Ratio (SINR) information as the measure of the coexistence level, since other parameters such as bit error rate, packet error rate, quality of service degradation, etc are dependent on device implementation.

The simulation tool, which will be implemented in e-SENSE, will match the requirements of the coexistence scenarios described in this document and is referred to as WACAT (Wireless Access Coexistence Analysis Tool).
The selected platform to develop WACAT is Matlab, due to its flexibility, its high signal processing capabilities and the existence of abundant related libraries. Section 2 includes some explanation about different simulation tools that have been evaluated, and a vision of how the coexistence study will be approached.
In Section 3 coexistence scenarios are defined, according to the systems and environments proposed in e-SENSE WP1, following the defined user scenarios which are clustered in three different application spaces. These scenarios will represent some proposed applications; however WACAT will be developed to enable the definition of new scenarios and the modification of any parameters, such as the real Power Spectral Density out of band emissions of different nodes.

Information about developed channel models is available in Section 4. Propagation models are orientated to obtain attenuation paths, but not to fulfil a signal integrity study, since it would lead to much more complex simulations. Different propagation models are used to emulate different links in the same scenario, according to the systems Radio Frequency characteristics. The list of models and their relation with coexistence scenarios defined are also part of Section 4.
As it is explained in this document, the simulation platform is “inter node link” orientated. It means that devices from different technologies are represented as single nodes following specifications provided by standardisation bodies. Parameters that are taken into account to implement these nodes are specified in Annex A. Nevertheless standards specifications related with out of band emissions need to be compared with real emission masks in order to obtain reliable results.