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Very interesting article. I fear Wilgenbusch and Heisig have over-stated the death of HF, however, in a changing threat environment. HF communications can't keep up, from a data-rate perspective to higher-frequency applications where available bandwidth is also much greater, but this argues, to some extent, that the bell-and-whistle quotient is getting too high on our communications requirements.
In cloud computing, we've learned that retrieving the results of a large computational run can be very expensive, but if the data are post-processed in the Cloud, and solely the results from your post-processed data, generally the volume and thus cost savings can be effected. In this regard, we need to identify what elements of digital communications are vital for the types of data we're talking about sending around, and optimize the data flows rather than thinking we've unlimited bandwidth.