Open spectrum (aka free spectrum) is a movement in the USA (apparently not a powerful one) to get the Federal Communications Commission html 
to provide more unlicensed radio-frequency spectrum that is available for use by all.
National governments currently allocate bands of spectrum (sometimes based on guidelines from the ITU, html ) for use by anyone so long as they respect certain technical limits (f.e. a limit on total transmission power).
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Traditional users of unlicensed spectrum include cordless telephones, and baby monitors. A collection of new technologies are taking advantage of unlicensed spectrum including Wi-Fi, Ultra Wideband, spread spectrum, software-defined radio, cognitive radio, and mesh networks wiki
# Features
- all the spectrum is shared and unlicensed -> thus: decentralized - no license payments or central control for users - people use Internet protocols to communicate with each other - people use smart devices, which would find the most effective energy level, frequency, and mechanism - sharing spectrum between unlicensed equipment requires that mitigation techniques (e.g.: power limitation, duty cycle, dynamic frequency selection) -> Pool, Cap & Divide Up are imposed to ensure that these devices operate without interference - government-imposed limits on who can have stations and who cannot would be removed --> and everyone would be given equal opportunity to use the airwaves for their own radio station, television station, or even broadcast their own website. Bring Diversity into Shared Purpose, Pool & Share.
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# See also
# Sources