Several choices have to be made during the design process of active tag based systems. Since the number of properties that must be decided before production and wide-scale deployment is relatively high, the use of real experiments in the design phase may be prohibitive. We propose the use of emulation for performing large-scale experiments with active tag based systems easily and in a repeatable manner. Such experiments can be used to validate the behavior of the system, and to decide the

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... for various system parameters. We illustrate this approach by experimental results obtained with an emulation framework that we designed and implemented for a pedestrian localization active tag based system.