FCC OKs Sweeping Spectrum Frontiers Rules To Open Up Nearly 11 GHz Of Spectrum (fiercewireless.com) 64
Monica Alleven, reporting for FierceWirelessTech: In one fell swoop, the FCC today put the U.S. in a 5G leadership position, voting 5-0 to approve its Spectrum Frontiers proceeding and make spectrum bands above 24 GHz available for 5G. FCC Chairman Tom Wheeler, noting his previous remarks on the proceeding, kept his remarks brief to avoid repeating himself. But he summed it up this way before the final vote: "This is a big day for our nation. This is a big day for this agency," he said. "I do believe this is one of the, if not the most, important decision this agency will make this year. By becoming the first nation to identify high-band spectrum, the United States is ushering in the 5G era of high capacity, high-speed, low-latency wireless networks. By not getting involved in the technologies that will use the spectrum, we're turning loose the incredible innovators of this country," he said. The new rules open up nearly 11 GHz of high-frequency spectrum for mobile and fixed wireless broadband -- 3.85 GHz of licensed spectrum and 7 GHz of unlicensed spectrum. The rules create a new Upper Microwave Flexible Use service in the 28 GHz (27.5-28.35 GHz), 37 GHz (37-38.6 GHz) and 39 GHz (38.6-40 GHz) bands, and a new unlicensed band at 64-71 GHz. The FCC will continue to seek comment on bands above 95 GHz.
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You must be new here...
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Errr... how does a lightbulb generate light at 750000GHz from 60Hz AC?
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First you have to get it really excited
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Re:Frequency limited by processor clock speed? (Score:5, Informative)
Frequency multipliers and other fancy tricks.
You generate a 10mhz signal, then add it to a 20ghz sine wave. Bingo you've got a 10mhz channel at 20ghz.
That's a simplification of what wifi channels do.
Re:Frequency limited by processor clock speed? (Score:4, Informative)
You generate a 10mhz signal, then add it to a 20ghz sine wave.
Actually you MULTIPLY it, which exercises a trigonometric identity that creates two new "sidebands":
- The 10 mHz signal with the frequency of each component of it shifted up by 20gHz (i.e. a component at 10 mHz would appear at 20gHz + 10 mHz, a component at 5mHz would appear at 20gHz + 5mHz, etc.)
- The 10 mHz signal with the frequency of each component of it interpreted as a NEGATIVE frequency (i.e. frequency-inverted) and shifted up by 20gHz (i.e. a component at 10 mHz would appear at 20gHz - 10 mHz, a component at 5mHz would appear at 20gHz - 5mHz, etc.)
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You know all that, but you don't know it's capital M and capital G?
Sorry. Was in a hurry.
(But what's nine orders of magnitude {in the m vs. M case} among friends? B-) )
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Use a 60GHz diode [insight-product.com] and amplitude modulate it as one example.
Attenuation Above 10Gz (Score:5, Informative)
Sounds good for outdoor use, but above 10Ghz the signal starts behaving more like infrared than microwave and is going to struggle to get through walls I think.
Re:Attenuation Above 10Gz (Score:4, Informative)
Re:Attenuation Above 10Gz (Score:5, Informative)
Not even good for outdoors, any time it rains you'd be having issues. High Frequency and water dont mix.
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HF is only between 3 and 30 MEGAHz, not GHz
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Should actually be pretty safe unless the power level is really high because its hardly going to penetrate the skin.
all for the low price of.. (Score:2, Insightful)
Seriously you will still get ripped off royally by the cellphone carriers, who will charge you over $100, for a network speed you'll never get with less than 5GB of bandwidth per month. So this means nothing.
They need to change the business model (Score:5, Interesting)
Displaced services (Score:5, Informative)
Although Summary makes it sound like this is entirely a 5G thing, the unlicensed 64-71 GHz band suffers from high attenuation due to rain and oxygen [wikipedia.org], and aren't useful for distances more than about 1 mile. So this spectrum is clearly aimed at higher speed wifi (multi-gigabit).
Re:Displaced services (Score:5, Funny)
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Free-for-all spectrum? (Score:3, Insightful)
I'd be inclined to agree with you - for thinly populated areas.
You do realize that (for a wide frequency band) the EM spectrum is a shared resource? Like the air we breathe: if I start a fire, that removes oxygen from the air around it. And puts smoke in the air. Smoke that will be visible from a distance, and the combustion products may affect people in a wide area. Therefore (in most populated areas) people are not free to burn stuff out in the open as they please. Such activities may be regulated, and
Re:Free-for-all spectrum? (Score:4, Informative)
So some government regulation is quite appropriate.
if you go way back there was a time when spectrum was unregulated. Gordon West wrote in his GROL book in 1920s (or early 30s) the Supreme Court ruled Dept of Commerce did not have enforcement authority. Radio stations went wild, using whatever freq and power levels they wanted. It became such a mess many listeners turned off their receivers and radio sales plummeted. Later when FCC was created they wrote legislation more carefully.
But it seems FCC has become regulatory captured as they seem more interested in selling spectrum. Interesting to talk with old timers recalling when FCC did enforcement and regulation including Part 15 products (maybe the high tech just got too fast for proper regulation). Many think the free market is more efficient but then there is no and never was a free market (except in the wild west and things were not that great, kind of like Somalia), everything is owned and controlled. If owned and controlled by one or a very few entities, well we get what we got which is what we are all bitching about today.
Re:not free to burn stuff (Score:1)
I'm not sure how much your reasoning holds water as air is mobile and if that was really the issue there would have been more problems back in the time where fire was the main method of keeping warm and cooking. We talk of the great fire of London and Rome burned while Nero fiddled because of stuff burning not asphyxiation. Of course, in enclosed and insula
Free-speech-for-all spectrum? (Score:2)
You do realize that (for a wide frequency band) the EM spectrum is a shared resource?
You do realize that (for a wide frequency band) the audio spectrum is a shared resource?
Why don't we have a Federal Speech Commission regulating the use of the audio spectrum? Just think: If everyone talks at once, nobody can hear each other. If some people talk louder they drown others out. If people talk at night they keep others awake. And so on.
By the same arguments used to claim regulation of the radio spectrum is
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However poorly enforced, there ARE regulations on sound. Lots of them. There is less need for actual licensing since sound rarely travels so far that the source can't be readily identified and it's hard to justify licensing an in-born vapability.
If we were born able to emit radio frequency, we'd probably have no licensing there (but we wouldn't likely allow radio at all since it would be equivalent to standing on the sidewalk with a megawatt power bullhorn.
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You do realize that (for a wide frequency band) the audio spectrum is a shared resource?
What an absolutely worthless comparison.
When you develop a network technology that can handle numerous transmitters on the same frequency---some of which are far more powerful than the one you're listening to---go ahead and let the rest of us know.
Until then, we'll continue to divvy up the spectrum so that things work in the real world.
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When you develop a network technology that can handle numerous transmitters on the same frequency---some of which are far more powerful than the one you're listening to---go ahead and let the rest of us know.
It's a class of modulation schemes called "spread spectrum". Been around for decades. If it's done right you can't even tell there are other signals out there unless you know THEIR spreading codes because they look too much like thermal background noise.
Yes, they "make the grass taller" and the total
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Sorry I didn't catch that, someone else must have also been using your frequency and it came across all garbled.
Maybe an organisation should be set up to make sure everyone uses different frequencies? Then your message could get through intact.
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Decent broadband in rural areas (Score:1)
Does this mean there will finally be decent wireless broadband in rural areas?
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Nope, you want lower frequency ranges for that, higher frequency = shorter distance.
Nothing to get excited about. (Score:5, Interesting)
If it was LOWER than 2.4GHz then yes.
If instead of selling off *ALL* analog TV channels to the highest bidder
they would have kept ONE channel and made that unlicensed,
NOW THAT WOULD HAVE BEEN EXCITING!
Instead we get frequencies that are block-able by clouds.
Massive amounts of transmit power? (Score:3)
I'm OK if they are forced to use it for = 5G (Score:2)
I'm OK if they are forced to use it for >= 5G... if they won't provide 5G willingly, and are holding it hostage to a crippled net neutrality: sorry: I guess you don't get new spectrum.
https://yro.slashdot.org/story... [slashdot.org]
And yes, I'm aware, that most of the asses in the /. article are European, but some of them are the same companies in both the U.S. and Europe.
Re:I'm OK if they are forced to use it for = 5G (Score:5, Insightful)
Europe here. If the choice is to either have net neutrality or 5G, I take net neutrality. Twice. Thrice on weekends. Hell, take 3G while you're at it, too.
In other words, why should I give a shit about how fast my internet is if I'm not the one who gets to decide what this speed is spent on?
In other news... (Score:1)
Home Depot outbids Netflix in FCC auction for rights to reflect
orange light.
Landmark Supreme Court ruling affirms government argument that the
de Broglie equation grants FCC regulatory authority over solid matter.
FCC announces new MassFi initiative, granting unlicensed access to
a broad range of particle momentum.
Loophole in FCC rules allow for MHz and Mc spectra to be auctioned separately.
Negative frequ
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paper (Score:3)