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Author Topic: Researchers Download "Game Of Thrones" In Just 1 Second!  (Read 3882 times)

Offline Paul2

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Researchers Download "Game Of Thrones" In Just 1 Second!
« on: February 15, 2016, 10:03:49 AM »
Quote
A new record for the fastest ever data rate for digital information has been set by researchers at the University College London (UCL) in the Optical Networks Group. They achieved a rate of 1.125 Tb/s as part of research on the capacity limits of optical transmission systems.

Lead researcher, Dr Robert Maher, UCL Electronic & Electrical Engineering, said: "While current state-of-the-art commercial optical transmission systems are capable of receiving single channel data rates of up to 100 gigabits per second (Gb/s), we are working with sophisticated equipment in our lab to design the next generation core networking and communications systems that can handle data signals at rates in excess of 1 terabit per second (Tb/s).

"For comparison this is almost 50,000 times greater than the average speed of a UK broadband connection of 24 megabits per second (Mb/s), which is the current speed defining "superfast" broadband. To give an example, the data rate we have achieved would allow the entire HD Games of Thrones series to be downloaded within one second."

The study used techniques from information theory and digital signal processing to custom build an optical communications system with multiple transmitting channels and a single receiver. The project set out to investigate ways to improve the optical network infrastructure to support the explosion of digital content, cloud and e-health services, as well as the ubiquitous connectivity of smart devices referred to as the Internet of Things (IoT).

The team determined the best way of encoding information in optical signals, taking into account the limitations of the transmitter and receiver. They then applied coding techniques commonly used in wireless communications, but not yet widely used in optical communications, to ensure the transmitted signals are adapted to distortions in the system electronics.

Using UNLOC?s lab facilities, the researchers built the new optical system and measured its performance. Fifteen channels, each carrying an optical signal of different wavelength were modulated using the 256QAM format typically used in cable modems, combined and sent to a single optical receiver for detection. By grouping the channels together, the team created a ?super-channel? which although not yet commercially available, is widely believed to be a way forward for the next generation of high-capacity communication systems.

In this study, the researchers connected the transmitter directly to the receiver to achieve the maximum data rate. They will now test the system and measure the achievable data rates in a long distance transmission scenario where optical signals can become distorted as they travel through thousands of kilometres of optical fibres.
http://cdrinfo.com/Sections/News/Details.aspx?NewsId=45558

Unbelievable.  At 1.125 Terabits per second of wi-fi optical transfer, that is way too futuristic and unreal.  This transfer is a lot faster than current wired hdmi cable connection.  The latest HDMI 2 connection only transfer up to 18 gigabits per second.  Which means this wi-fi optical transfer is over 60 times faster, 62.5 times faster to be exact.

with that speed, I couldn't imagine you can download all of HD lossy compression of Games of Thrones series in just 1 second.  Again, very unbelievable. :bounce: :bounce: :bounce:
« Last Edit: February 15, 2016, 10:21:29 AM by Paul2 »

Offline Kurt Angle

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Re: Researchers Download "Game Of Thrones" In Just 1 Second!
« Reply #1 on: February 15, 2016, 11:11:37 AM »
Well with those speeds you could stream it online and save yourself valuable hard drive space.  :p

Offline Paul2

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Re: Researchers Download "Game Of Thrones" In Just 1 Second!
« Reply #2 on: February 15, 2016, 01:32:16 PM »
yeah, with that speed, you could stream 2k, 4k, 8k, and even 10k videos in uncompressed or lossless compressed quality and still have plenty of speed left to stream multiple videos or even download.

i just did the math for 8k video and this is the bandwidth it eats up per a second.

7680 x 4320 x 30 x 60 = 59,719,680,000 bits or roughly 60 gigabits per a second.

7680 x 4320 is the resolution for "8k" video
30 is the color bit rate which is 30 bits color RGB or 10 bits per channel at full 4:4:4 Y:Cb:Cr sampling.
and 60 means 60 frames per a second.

multiply them all together and we get nearly 60 gigabits per a second, all uncompressed.  1.125 terabits equal 1,125 gigabits per a second.  divide 1,125 by 60 and we get 18.75 which means you can stream up to a little over 18 pages of 4k videos in uncompressed or maybe a little more than that in lossless compression simultaneously.  Awesomely unbelievable. :bounce: :bounce: :bounce:
« Last Edit: February 15, 2016, 01:37:18 PM by Paul2 »

Offline Titan

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Re: Researchers Download "Game Of Thrones" In Just 1 Second!
« Reply #3 on: February 15, 2016, 03:20:06 PM »
And here I am only getting 720p from my bullshit cable provider......
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Offline Paul2

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Re: Researchers Download "Game Of Thrones" In Just 1 Second!
« Reply #4 on: February 15, 2016, 03:37:15 PM »
yeah, i see.  what cable provider did you subscribe to?  I think your cable provider like most other providers only broadcast 720p and 1080i in lossy compression quality.  Same with free ota digital broadcast which broadcasts mostly in lossy hd 720p and 1080i videos too.  Some add more channels by only broadcasting in 480p or 480i or even lower than that, in 240p only.  btw, how much did you spend per month on cable tv?

Offline Titan

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Re: Researchers Download "Game Of Thrones" In Just 1 Second!
« Reply #5 on: February 15, 2016, 03:59:12 PM »
yeah, i see.  what cable provider did you subscribe to?  I think your cable provider like most other providers only broadcast 720p and 1080i in lossy compression quality.  Same with free ota digital broadcast which broadcasts mostly in lossy hd 720p and 1080i videos too.  Some add more channels by only broadcasting in 480p or 480i or even lower than that, in 240p only.  btw, how much did you spend per month on cable tv?

Cablevision. I'm still at home until me and a couple buddies find a place to move to so I'm under my parent's plan. I think they spend 130 or something for the phone, internet, cable. When me and my buddies get a place, I may just sign up for internet and PlayStation Vue. It'll be way cheaper that way. 40 for internet and 50 for the basic cable package which has all the channels I watch anyway, lol.
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Offline Paul2

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Re: Researchers Download "Game Of Thrones" In Just 1 Second!
« Reply #6 on: February 15, 2016, 10:46:41 PM »
$50 for basic cable, i think that is still a bit expensive.  Whatever float your boat.  As for me, i prefer watching free digital ota (over-the-air) broadcasts since its free and usually compressed less than cable tv.  especially if its 720 and 1080i.  But i don't watch tv much nowadays.  too much tv is bad for me and bad for my head.  i would like to work out if i am in the mood or go to the park instead of watching too much tv or surfing the internet.  what have prevent me from going to fitness center to workout are my social anxiety disorder and paranoia.  its a struggle trying to hide it and act normal wherever i go where there are people around.  when i go to the fitness center, i get uncomfortable around people.

I am going to go a little off-topic here but i feel like explaining myself about something about me.  sorry if the story is long.

This past 1 year, i been quite disappointed in myself going to the park that i made little to no improvement on doing the split and doing jump kicks.  i first practice doing the split that i learned from tae-kwon-do over 16 years ago and last year i try to practice again but my spine is croaked to the right.  Not only that, but over a year ago, i trying to lay down on my back in hoping to pull my spine down by gravity from the curvative spine that i had because of the multiple chiropractics that i got from this evil guy back in late 2006.  He bent my upper and lower back many times that i got curvature spine because of it.  But by laying down for hours almost every day over a year ago, i have no clue it will straighten my spine a little bit i think but at the same time made my lower back stiff and last year, i have been sleeping for 19 years on the right side so much that my back is croaked to the right.  This year, give or take a few months will be the 20th years that i have been sleeping almost always on the right side.

to this day, i still sleep mostly on my right side too and its still a big struggle for me to sleep on the left side or on my back that cause me to be unable to do the split all the way down when my body face the front, or when my body face to the right side.  i think its mostly because of the spine croaked to the right that causes that.  But the interesting thing is, after a few months of practicing doing the split, i can do the split to the left all the way down just fine since my spine is croaked to the right.

it does made me wish that i shouldn't bother sleeping on my back starting over a year a ago and my spine wouldn't be stiff like that.  late last year, i felt really disappointed in myself that i couldn't do the split all the way down facing the front and the right side too.  but i was hoping one day i could do it though.  i count my blessings though.  i am very grateful that now i get a lot of peace, freedom, and fun at my mom's home.

if i remember correctly, back in early to mid october 2014, i practices jump back kick that i got from tv that i watched.  its from a music video on dvd.  at first i did a really bad job, but a few days later or so, i did a decent job.  i couldn't see myself but i am pretty sure i did a decent job.  Then in early december 2014, i started to lay down on my back that it made my spine stiff that in early January 2015, i practiced jump back kick again that i couldn't jump as high nor is the back kick is that high either.  Months later, i made no improvements with the jump back kick that i started to feel disappointed in myself especially in October of 2015 which coincidentally marked one year anniversary since i practice that.

There end of my off topic long story.  sorry about my life's story.

Anyway, here is another wi-fi optical reciever that can receive up to 1 Tbits per second of data.

Quote
Mitsubishi Develops 1Tb/s Multi-subcarrier Optical Transceiver Technology

Mitsubishi Electric has developed a multi-subcarrier optical transceiver technology that significantly increases the data rate of terrestrial fiber optic communication.

A single receiver was used to achieve a data rate of one Terabit per second (1Tb/s), a 10-fold improvement over current mainstream commercial transceivers, which operate at up to 100 Gigabits per second (Gb/s) per optical receiver.

In optical communication, signals are carried on light waves known as carriers. Due to the limitation of signal bandwidth that can be generated without significant distortion, the throughput of a single carrier is also limited. Mitsubishi Electric achieved the 1Tb/s transmission rate with existing optical fibers by using a multi-subcarrier technology that transmits 11 light waves (subcarriers) simultaneously in a single channel by using an optical comb, a device that creates a series of discrete, synchronized optical waves equally and densely spaced in the channel. While conventional methods would require 11 receivers for the same number of subcarriers, this new technology only requires a single receiver due to the use of densely spaced, synchronized subcarriers in a single channel and novel multi-subcarrier signal processing algorithms. No major changes are required to the existing optical network infrastructure, keeping the cost of deploying this new technology quite low.



Usually, when using subcarriers for optical communication, each subcarrier undergoes different signal distortions, which results in damaged data like video distortion on the receiving end. To avoid this problem, Mitsubishi Electric used pilot signals to accurately realign the subcarriers at the receiver. Known pilot symbols are periodically inserted into the transmitted signal, which serves as a landmark for correct orientation of all subcarriers and prevents data damage.

This technology has enabled an experimental demonstration of 1Tb/s net data rate transmission using a single optical receiver. The experiment also achieved a spectral efficiency of 9.2b/s/Hz, which as of January 2016, was the highest in the world in a 1Tb/s transmission using a single optical receiver.

In this work, Mitsubishi Electric collaborated with the Optical Networks Group at University College London , who jointly lead UNLOC, a large UK research project to unlock the capacity of optical communications, with a team at Aston University.

http://cdrinfo.com/Sections/News/Details.aspx?NewsId=45561

this optical wifi transfer speed is like neck and neck with the one that University of London made but uses a different approach to receive 1 Tbits per second.  Again unbelievably awesome! :bounce: :bounce: :bounce:
« Last Edit: February 15, 2016, 11:00:42 PM by Paul2 »

 

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