If your device (e.g. iPhone 11) uses ultra-wide band (UWB) it: (1) operates at power levels below the noise floor; and (2) uses spectrum that occupies a bandwidth greater than 500 MHz. Low power spectral density limits interference with conventional radio. https://www.itu.int/dms_pubrec/itu-r/rec/sm/R-REC-SM.1755-0-200605-I!!PDF-E.pdf …
Radio involves trades: "UWB trades pulse shortness (gaining high signal/symbol rate) in exchange for 1) bandwidth (which becomes wider) and 2) S/N (which is reduced). Each advantage is offset by a disadvantage, the cure for which is another disadvantage." https://www.ntia.doc.gov/legacy/osmhome/uwbtestplan/barret_history_(piersw-figs).pdf …
Relatively low power limits allowed in use of UWB are both a disadvantage and a benefit since they: 1) restrict applications to relatively short distances, but 2) result in a very power-efficient and low-cost implementations, which preserves battery life.
As in most aspects of life, tradeoffs are inevitable. An ideal wireless system would transmit:
1. a lot of data,
2. very far,
3. very fast,
4. for many users,
5. all at once.
It is impossible to achieve all five attributes simultaneously. C’est la vie. http://ecee.colorado.edu/~ecen4242/marko/UWB/UWB/art_4.pdf …
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