1. © Fraunhofer IIS GERMAN PARTICIPATION IN HF CHANNEL AVAILABILITY MEASUREMENTS Wideband Channel Availability Working Group – 09.09.2014 robert.koch@iis.fraunhofer.de

2. © Fraunhofer IIS 2 Agenda Short overview on… our funded study the available German measurement sites the data acquisition method and software the planned data analysis metrics

3. © Fraunhofer IIS 3 Overview of the study Study is funded by German BAAINBw (Federal Office of Bundeswehr Equipment, Information Technology and In- Service Support) Official contact: Department I 6.1, baainbwi6.1@bundeswehr.orgbaainbwi6.1@bundeswehr.org Title for reference: “Nationale Breitband-Kanalverfügbarkeit” Main goals: Analyze appropriate availability metrics Design and setup measurement hardware and campaign Give hints for potential future frequency allocation schemes Time frame: 05/2014 – 10/2014

4. © Fraunhofer IIS 4 Available measurement sites within Germany Eckernförde, WTD 71 (very quiet, costal) Ilmenau, University/FhG IIS (quiet urban, rural) Erlangen, FhG IIS (urban) Nürnberg/Nuremberg, FhG IIS (urban) Greding, WTD 81 (rural)

5. © Fraunhofer IIS 5 Available measurement sites within Germany Site Erlangen, FhG IIS Hardware: Perseus-SDR, R&S HE011 active antenna (roof top, 3 floors) Specialty: DRM-Transmitter (15,785 MHz, 100 W avg.) of student radio „Bit-Express“ on tower directly on site (50 m distance)

6. © Fraunhofer IIS 6 Available measurement sites within Germany Site Nürnberg/Nuremberg, FhG IIS Hardware: Perseus-SDR, R&S HE010 active antenna (roof top, 3 floors)

7. © Fraunhofer IIS 7 Available measurement sites within Germany Site Ilmenau, FhG IIS Hardware: Perseus-SDR, DX10 active antenna (roof top)

8. © Fraunhofer IIS 8 Available measurement sites within Germany Site Eckernförde/Schwedeneck, WTD 71 Hardware: Perseus-SDR, R&S HE010 active antenna (container, near sea)

9. © Fraunhofer IIS 9 Available measurement sites within Germany Site Greding, WTD 81 Hardware: Perseus-SDR, stationary omni-directional antenna (on field) Antennas temporarily available (except TX test periods)

10. © Fraunhofer IIS 10 Method used for data acquisition and storage Designed for compatibility with existing measurement setups within this working group 1 MHz signal bandwidth 4096 FFT for 488 Hz resolution bw. Averaging for 1 second Mean and max values stored (float) Software written in Python for easy extension Scientific exchange with University of Erlangen/Nuremberg working on channel measurement/modelling

11. © Fraunhofer IIS 11 Software used for data acquisition and processing

12. © Fraunhofer IIS 12 Planned data analysis metrics 2 Goals Preparation of results for German frequency allocation requirements Compatibility and comparability to this working group (resp. NATO) TBD

13. © Fraunhofer IIS 13 End of presentation Thanks for your attention! Contact / questions / remarks to: robert.koch@iis.fraunhofer.de ewald.hedrich@iis.fraunhofer.de or baainbwi6.1@bundeswehr.org