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brezžični prenos (internet) hitreje al isto hitro kot optika.. kdaj bo to?

brezžični prenos (internet) hitreje al isto hitro kot optika.. kdaj bo to?

shintaro ::

A je to sploh možno?

blink ::

"Let's take London-Frankfurt as a real-world example. As the raven flies, the two cities are 396 miles apart. A radio signal travelling through air at just under the speed of light (299,700km per second) would cover that distance in 2.126 milliseconds. Through a glass or plastic fibre, where light has to bounce along the refractive index rather than travel in a straight line, the speed of light is reduced to around 200,000km/s, resulting in a theoretical minimum latency of 3.186 milliseconds."

https://arstechnica.com/information-tec...

shintaro ::

blink je izjavil:

"Let's take London-Frankfurt as a real-world example. As the raven flies, the two cities are 396 miles apart. A radio signal travelling through air at just under the speed of light (299,700km per second) would cover that distance in 2.126 milliseconds. Through a glass or plastic fibre, where light has to bounce along the refractive index rather than travel in a straight line, the speed of light is reduced to around 200,000km/s, resulting in a theoretical minimum latency of 3.186 milliseconds."

https://arstechnica.com/information-tec...


thx

Nikonja ::

Ampak tu ni pomembna hitrost kot bandwith ampak latency, in finančnim institucijami je to zeloooo pomembno, ostalima tudi ampak niti blizu v takšni meri.

Bandwidth: Bandwidth determines how fast data can be transferred over time. Bandwidth is the amount of data that can be transferred per second.
Latency: Latency is delay. Latency is how long it takes data to travel between its source and destination, measured in milliseconds.

Najhitrejši brezžični prenos podatkov:
https://www.extremetech.com/electronics...

shintaro ::

Nikonja je izjavil:

Ampak tu ni pomembna hitrost kot bandwith ampak latency, in finančnim institucijami je to zeloooo pomembno, ostalima tudi ampak niti blizu v takšni meri.

Bandwidth: Bandwidth determines how fast data can be transferred over time. Bandwidth is the amount of data that can be transferred per second.
Latency: Latency is delay. Latency is how long it takes data to travel between its source and destination, measured in milliseconds.

Najhitrejši brezžični prenos podatkov:
https://www.extremetech.com/electronics...


waw zelo zanimivo branje

SaXsIm ::

Svetloba v optičnem vlaknu potuje počasneje kot radijski valovi v zraku.
SaXsIm

vostok_1 ::

Je pa bistveno bolj zanesljiva in potrebuje manj error cheking mehanizmov. Pa še precej težje za prisluškovat.
There will be chutes!
It came from the lab.
Like tears in rain. Time to die. v_1 2012-21

Zgodovina sprememb…

  • spremenil: vostok_1 ()

Invictus ::

Radijski spekter se deli med vse uporabnike.

Kabel do tvojega doma ne.

Seveda je pa vprašanje kak link naprej je od end-point vozlišča.
"Life is hard; it's even harder when you're stupid."

http://goo.gl/2YuS2x

SaXsIm ::

No shit, Sherlocka. Ampak vprašanje na takšnem nivoju pač zasluži primeren odgovor.
SaXsIm

Zgodovina sprememb…

  • spremenil: SaXsIm ()

Miha 333 ::

Kaj niso LTE hitrosti prenosa že primerljive s tistimi na optiki?

Invictus ::

Miha 333 je izjavil:

Kaj niso LTE hitrosti prenosa že primerljive s tistimi na optiki?

Od kdaj pa imaš na LTE samo zase 1Gbit/s??????
"Life is hard; it's even harder when you're stupid."

http://goo.gl/2YuS2x

Miha 333 ::

Dobro, 1 Gbit/s je luksuz. Povprečne hitrosti uporabnikov interneta na optiki so 10 - 100 Mbit/s

mojster_joni ::

odvisno, 1 gbit dl in ul je lukus, 1 gbit dl ja pa manj kot 20 eur nažalost... mar bi imeli 500/500


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