Extremely High Frequency (EHF) Bands for Future Broadcast Satellite Services: Opportunities and Challenges

Abstract

The exploitation of the bandwidth portions in the millimeter wave domain, namely: Extremely High Frequencies (EHFs) will open new perspectives to future satellite services, in particular for high quality TV broadcasting and multimedia content delivery. The present work aims at surveying the opportunities and challenges of EHF exploitation for broadband satellite applications in the broadcast framework. Theoretical capacity evaluation confirms that EHF satellite links can offer unprecedented data-rates, clearly superior than that actually provided by Ku and Ka-bands. However, some crucial issues are still to be solved, mainly in terms of mitigation of tropospheric propagation impairments and appropriate waveform design. Link and capacity analysis will be the basis for the investigation of future application scenarios of broadcast EHF satcoms, namely: HDTV and Ultra High-Definition TV (UHDTV), with particular emphasis to 4K and 8K video formats.Index Terms-Next generation broadcast sat systems and standards, Future technologies and services for broadcasting, Extremely High Frequency (EHF), UHDTV. 37.5-42.5 GHz (fixed) 40.5-42-5 GHz (broadcasting) W-band 81-86 GHz (fixed) 71-76 GHz (fixed) 74-76 GHz (broadcasting)The pioneering feasibility studies about EHF for satellite communications have been carried out in early 2000s in the framework of DAVID [9] and WAVE [10] experiments. The focus of these activities -where Italian Space Agency (ASI), University of Rome Tor Vergata and Politecnico di Milano, together with industrial actors and other academic research entities, involved in synergy -was mainly addressed to the W-Tommaso Rossi and Marina Ruggieri are with the

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