4 ms·
Actually, because of the low propagation properties, mm-wave 5G network is mostly fiber. The signal can only travel a few hundred feet, the rest is fiber. Why ?
by zw123456 6y ago
Actually, because of the low propagation properties, mm-wave 5G network is mostly fiber. The signal can only travel a few hundred feet, the rest is fiber. Why ? The most expensive part of fiber is the last few hundred feet. Also, the antennas being so small, don't necessarily have to be on a large pole. Also they use phased array antennas that electronically steer the signal so they can be mounted on light poles that might sway a little but it can be compensated for. BTW, Huawei equipment is not being used by any of the major carriers in the US (or any that I am aware of). The mm-wave signal is safer than wifi. Remember, you microwave oven using 2.4Ghz to cook your food, same band as wifi.
- Raphael_Amiard 6y agoSo, what you're saying is that 5g is basically an improved wifi? (Shortish range so uses another transport, very good throughput)
- looneytunes6651 6y agoZalyobokskaya NP, 1977. Biological effect of millimeter radiowaves. Vrachebnoye Delo 3: 116-119. Declassified and Approved for release 2012/05/10: CIA-RDP88B01125R000300120005-6 Levedeva NN, Reactions of the central nervous system to peripheral effects of low-intensity EHF emissions. Approved for release 2000/08/10: CIA-RDP96-00792R000100070001-9 Potekhina IL, Akoyev GN, Yenin LD, Oleyner 1992 Effects of low-intensity electromagnetic radiation in the millimeter range on the cardiovascular system of the white rat. Fiziol Zh 78:35-41Numerous other citations showing penetrating effects of millimeter waves are cited in: Betskii OY &Lebedeva NN. Low-intensity millimeter waves in biology and medicine. In: Clinical Application of Bioelectromagnetic Medicine, Marcel Decker, New York, pp. 30-61. A very recent paper came to the same conclusion that millimeter waves produce highly penetrating effects for the same reason, extensive empirical evidence: Kostoff et al (Toxicol Lett 2020:323;35-40).
- DoofusOfDeath 6y agoCould someone explain why the sibling comment is flagged and dead? I don't have any background in this area, so it's not obvious to me what's wrong with the comment.
- akvadrako 6y agoIt looks like just a list of papers, almost definitely either irrelevant or bad science. This kind of thing is very common and it’s not worth the time to investigate it. If someone wants to show that 5g is dangerous they need to first demonstrate they understand why those claims aren’t taken seriously.
- GregoryVPerry 6y ago>The mm-wave signal is safer than wifi. This is completely not true, and the foregoing article ignores numerous aspects of the potential health concerns of millimeter wave radiation in the 95Ghz area of the spectrum. 1) 95Ghz millimeter wave provably and without question has the potential for adverse affects on human tissue. Active Denial Systems (https://jnlwp.defense.gov/About/Frequently-Asked-Questions/Active-Denial-System-FAQs/ https://jnlwp.defense.gov/About/Frequently-Asked-Questions/A... for example) use 95Mhz directed energy for so-called Non Lethal Weapons technology. This is not complex. 2) Based on poor signal propagation and inability to permeate through common materials used in most building construction, 95Ghz picocells are being deployed every couple hundred feet in areas with large buildings and superstructures. This is not something that can be opted out of, especially in densely populated urban areas. 3) The adverse effects of electromagnetic fields on biological tissue was extensively researched by Dr. Robert Becker and documented in his published scientific research as well as his book The Body Electric. All of this information was suppressed by academia and big pharma, he proved exponentially increased cellular mitosis rates, damage to DNA, and a host of other ill effects from EM fields at powers significantly less than today's mobile telephones and WiFi access points. There is a massive profit motive associated with mobile telephony, the Federal Communication Commission is one of the only, if not the only, self-funded government agencies in the U.S. and if you've ever consulted for them it shows. Armani suits, 7 Series in the parking lot, the FCC has loads of cash from spectrum allocation auctions where they receive billions of dollars for each chunk of the spectrum they auction off for use by mobile carriers. Millimeter wave 5G should be completely stopped in its tracks until conclusive studies have been conducted. Hundreds if not thousands of scientists at this point have signed public letters to this effect, I am really surprised this is even a 5G positive topic of discussion on YC.
- Dylan16807 6y ago> 1) 95Ghz millimeter wave provably and without question has the potential for adverse affects on human tissue. Active Denial Systems (https://jnlwp.defense.gov/About/Frequently-Asked-Questions/A.. https://jnlwp.defense.gov/About/Frequently-Asked-Questions/A.... for example) use 95Mhz directed energy for so-called Non Lethal Weapons technology. This is not complex. At what energy levels? You can use a really bright light as a denial system, but that doesn't mean a flashlight can harm someone. Any system that relies purely on heat to cause problems does not demonstrate that the frequencies are unsafe.
- gsich 6y ago>Remember, you microwave oven using 2.4Ghz to cook your food, same band as wifi. Which was chosen because of the size factor. Other frequencies would also be able to cook food.