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New communication and broadcasting systems use a high level of diversity to increase the service availability. For example time diversity/time interleaving offers a high gain for mobile reception, whereas diversity solves the “flat fading problem” for stationary reception. Combining the technologies requires a detailed characterisation of the propagation characteristics to evaluate the overall gain.
The channel measurement equipment (CME) is a flexible test receiver designed for multiple applications in the context of statistical analysis of the QoS and coverage of satellite and terrestrial communication systems like:
The key issue is to provide a flexible measurement equipment that offers a complete tool chain for:
The main benefits of CME is to offer a product that addresses all aspects of a field strength measurement based field testing campaign, from the recording of the data up to the generation of detailed analysis results, at a reasonable price.
The CME consists of 2 separate hardware units, the "Antenna Assembly" and the "CME Core" which are connected over an optical link.
Features of the Antenna Assembly:
Features of the CME-Core:
The major milestones of the project are: