Wireless Video Transfers 100X Faster Than WiFi

coondoggie writes "Later today IBM plans to announce microprocessor chipsets that can wirelessly transmit high-definition video at extremely high speeds. 'IBM will do this by teaming with MediaTek to launch a joint initiative to develop these ultra fast chipsets.The companies will be developing millimeter wave (mmWave) radio technology — the highest frequency portion of the radio spectrum — 60 gigahertz rather than 2.4 gigahertz — and digital chipsets that enable at least 100 times higher data rates than current Wi-Fi standards.'"

Comments

Walls

[PineGreen]

First post: does it go through the walls? It's going to be difficult at these frequencies!

Re:Walls

[Tuoqui]

I'm betting its useless through walls since 802.11a uses 5GHz band and it very reliant on line of sight (you might be able to put it through a single wall). There are good reasons to use these though like if you want to limit your WiFi to the inside of a building and such it might limit the range to an acceptable level outside where someone passing by on the road wont be able to pick up a wireless signal. Likewise using these ultra high frequency ranges may make it impossible for it to pass outside the house which would effectively be good if you wanted to design a system that neighbors could not catch what you're watching on their TV.

The thing is from what I understand is that in order to get data from A to B more quickly you either need A) Multiple bands/More Bandwidth or B) Higher Frequency because you can switch states faster.

Re:Walls

[Linker3000]

I understand you get a better, more penetrating, signal using MONSTER gold-plated mm wave antennae. Apparently they produce signal waves using gold ions so any streamed video has sharper definition and crisper sound.

There's a picture of one of these SupaAntennas here.

The normal selling price is $99.99/pair but I can do two for only $49.99.

Re:Walls

[evilviper]

if you want to limit your WiFi to the inside of a building and such it might limit the range to an acceptable level outside where someone passing by on the road wont be able to pick up a wireless signal.

A very bad idea. You're likely to install it in a room with a window, which it will go through with no trouble and provide a strong signal to anyone outside, while you'll still struggle to get a signal in the next room (through a wall, not a window).

Re:Walls

[Anonymous Coward]

I was going to say: "The security is out the window", but you beat me to it.

Re:Walls

[Red Flayer]

which would effectively be good if you wanted to design a system that neighbors could not catch what you're watching on their TV.

What I want to know is how you are watching something on your neighbor's TV. Reminds me to keep my blinds closed -- if you can watch my TV from your house, I'm scared to think of what else you've seen.

Then again, if you'd seen anything worth worrying about, you're probably still recovering from the horror. I am my own best defense against peeping toms.

Re:Walls

[RadioElectric]

Then the way to go would be to put it in one room and then knock holes in the walls for the signal to go through. Even better, if you could concentrate the signal into a smaller width of broadcast you'd need a smaller hole to fit the same signal strength through. For absoulute security and extra directional power (and thus smaller holes) you could put the signal into some kind of insulated metal rope and send it along that directly into the target device. Am I on to something here?

Re:Walls

[Hatta]

You laugh, but it would be a lot easier to have a wireless outlet that just acts as a repeater between rooms, than to drag cables across the room and plug it into an outlet.

Article is shithouse.

[Whiney Mac Fanboy]

Article is shithouse - light on detail beyond belief. Check out IBM's 60GHz page.

What you want to know: Practical limitation is 10M, useless through walls.

Re:Article is shithouse.

[SeekerDarksteel]

What you want to know: Practical limitation is 10M, useless through walls.

Or 82 miles with a pringles can.

Re:Article is shithouse.

[DigitAl56K]

Practical limitation is 10M, useless through walls.

Bah. I've been able to see people in HD from ten meters for years!

Re:Article is shithouse.

[evilviper]

Or 82 miles with a pringles can.

At 60GHz? Not if there's any... you know... MOISTURE in the air around you.

Re:Article is shithouse.

[Whiney Mac Fanboy]

At 60GHz? Not if there's any... you know... MOISTURE in the air around you.

Or even any oxygen.

Re:Article is shithouse.

[Technician]

Or 82 miles with a pringles can.

You were modded funny, but you are not far off. As the frequency increases, the antenna size goes down to have the same beam angle and range. WiFi is near the frequency of C band satelite TV. This typicaly used an 8 to 12 foot dish. These used dishes are what are used for the long range WiFi. Instead of a pringles can, a Dish Network disk should have great gain at 60 Ghz as long as the surface is reasonably perfect to a 1/4 wavelength.

Re:Article is shithouse.

[abionnnn]

Well not quite, as well as the square power-law there's also an exponential attenuation factor due to absorption by the atmosphere. It is far greater at 60GHz than at 2.4GHz.

http://www.everythingweather.com/atmospheric-radiation/absorption.shtml (60GHz ~5mm)

Different from military application?

[DigitAl56K]

Is this different from the previously reported military use of millimeter wave in anything other than power? If so, what are the dangers, or is it supposedly safe?

Re:Different from military application?

[jank1887]

difference = frequency (60GHz vs 95GHz). It's a coupling efficiency issue. One couples well to your nerve endings, creating a burning feeling, the other doesn't. It may also be safe to assume that in standard implementation, these would use omni (or near omni) antennas, not a focused beam targeted at a human target. But, the Pringles can types may have their own ideas.

Hmmm

[xrayspx]

Wireless Video Transfers 100X Faster Than WiFi

Philo Farnsworth called the technology Image Dissection. I hear they get pretty bitchin' range with it too. AFAIK it now also handles HD content.

Line of sight only

[scsirob]

60GHz signals do not travel through walls or anything else. You can't set up a central transmitter in your house and watch HD movies elsewhere. This is nice technology to 'beam' signals across a street or to prevent wiring mess in an ad-hoc meeting room, but it won't be a real WiFi replacement

Re:Line of sight only

[DigitAl56K]

It's simple, you just drill a small hole in each wall to let the signal through; about 5.1mm should do it.

And at that point it's better than using a cable because... ?

Re:Line of sight only

[femto]

I would modify that slightly by saying 60GHz will travel through a typical office partition (with attenuation), so it's slightly better than line of sight (ie. infrared). Bricks walls are out, you might get away with a plasterboard wall. You probably can put a 60GHz access point on the ceiling of an open plan office and get a useful signal to each desk through a combination of propagation through light partitions, reflection and directional antennas. It will save having to wire an open plan office with ethernet. I know this because I was involved in a 60GHz project, that included a propagation study, in 1995. Google for the paper "A HIGH-SPEED WIRELESS LAN", IEEE Micro, 1997.

Re:Line of sight only

[Whiteox]

I mean, it's not that easy to push a cable through a 5.1 mm hole in the wall. Unless you use a 5mm cable.

Re:Line of sight only

[suv4x4]

60GHz signals do not travel through walls or anything else. You can't set up a central transmitter in your house and watch HD movies elsewhere. This is nice technology to 'beam' signals across a street or to prevent wiring mess in an ad-hoc meeting room, but it won't be a real WiFi replacement

Checkout my idea:

We know power lines can carry data. So, you buy little transformer-like devices that take this wireless video signal, transform it and beam the data in the power network.

Then you take another such transformer, and plug it in any socket at all in your house, or house around you even, which beams the data back to 60 GB wireless signal which hits your laptop, tv, console etc.

Achieved benefits:

1. no wires
2. works through walls
3. gigabits of bandwidth for your video and net
4. potentially getting brain cancer and dying young, but that's not important.

Well, what do you think? Can we file a patent here or what?

Re:Line of sight only

[femto]

Perhaps. As you have pointed out, MIMO relies on a "rich" multipath channel with lots of reflectors. Above 10GHz the channel starts to move towards ray propagation, reducing the amount of multipath in the channel. This might reduce the effectiveness of MIMO. I said "perhaps" because an open plan office might be a special case due to the sheer number of metallic reflectors in range. I gather some research groups are performing the relevant channel measurements, but I haven't seen the results.

Re:Line of sight only

[marcansoft]

But you can always just stream the content. 27Mbps is good enough for DVD and even decently compressed HD. 100Mbps Ethernet will stream HD without any trouble.

Re:Why?

[jon287]

At that frequency, the signal wouldn't penetrate walls very well, would it?

At that frequency, the signal wouldn't penetrate PAPER very well. You can think of it (nearly correctly) as a very weak flashlight beam, much like a regular old TV remote. Only lots more picky about everything being just right.

Not *that* fast

[egarland]

Since Wi-Fi is generally 11-54 mbit they're only talking 1-5 gbit. The mentioned use is for video so it sounds like they are trying to connect displays to devices that generate output, i.e. replacing a monitor cable. For comparison DVI is 3.7 gbit, DVI-D 7.4. Most likely they are talking about the 1-2 gbit range since if it was in the 5gbit range they'd probably have said so instead of 100x wifi. That data rate would only be useful for low-resolution displays like HDTVs, not for general purpose computer monitor use. The devices would likely need to be close to each other due to the high frequencies. It sounds like they may be targeting removing the cable requirements home theater systems or something similar.

Personally.. I like cables for hooking up video. Wireless is buggy, snoopable, power hungry, and hard to set up (with 4 transmitters and 4 receivers, how to you configure what displays where?) Cables, while bulky and sometimes annoying have an incredibly easy UI. Plug one end here, the other end there, the things are connected. Want to change it? plug the wire in somewhere else.

Errrrr

[Zouden]

Isn't millimeter wave the technology in the pain-inducing raygun?

Perhaps this is helps reduce the interference... no pesky animals between the transmitter and receiver!

Nifty..

[scoot80]

This is not going to replace WiFi, nor it is probably supposed to. However for applications such as wireless monitors/sound systems and anything else which is going to be in close vicinity to the transmitter, but requires high bandwidth, it might be useful. Do we see a super resolution wireless gaming mouse coming out soon??

Sources?

[Adeptus_Luminati]

Would you mind quoting your sources?
Thanks.

Post and Article a little misleading

[Bigjeff5]

They both seem to give the impression that the 60ghz wireless is a step up from WiFi, which it is not. It's more like a step up from your USB cable to a wireless equivalent. It will never be used for networking computers for the same reason USB cables will never be used for networking. They have a few severe limitations that prevent this from ever happening. The biggest problem is the fact that ANYTHING in the way blocks the signal. It can't even penetrate skin more than a millimeter or so as far as I know.

The real deal is this is going to make things like video cables and other short connections to computers and devices pretty much obsolete. I personally can't wait till you can stack a few stereo, video, and game devices on top of each other, plug them into the wall, turn them on and they all connect together. Combine this with the wireless power that's going to be coming out in a few years, and things are gonna be pretty pimpin.

Not very relevant Sources

[hrvatska]

Neither one of those links could be considered source material for the harmful effects of this sort of tecnology. The first one reports on increased cancers at the site where RFID chips are implanted. It's not about exposure to radio energy so much as it is about having a radio receiver implanted in the body. The second one doesn't offer up any facts related to the harmfulness of wireless technology. It's purely a specultative 'what if fluff' piece. Got anything better?

Re:How to practically implement

[Technician]

Hence, you put a slim, shielded tube over the distance you want to transfer. At each end of the tube is a transmitter/receiver. With further research it might even be possible to bend these tubes, so they go around corners etc. This would solve all the problems identified.


This tube has a name and has been in existance for many years. It's called a waveguide.
http://en.wikipedia.org/wiki/Waveguide
http://www.microwaves101.com/encyclopedia/waveguide.cfm

Drawings of some waveguides are here;
http://www.uniquesys.com/products/passive/waveguides/s111_2.html?gclid=COyF1u6coo8CFSI4YAod20h_aQ

You can buy eliptical waveguide here for frequencies up to about 22 GHZ.
http://antennasystems.com/ewassy.html
and rectangular waveguide up to 40 GHZ here.
http://www.antennasystems.com/waveguide.html

Re:Cancer risk?

[fnj]

You're right that frequency and power are different. Mutations require ionizing radiation; basically alpha/beta/gamma rays, neutrons, cosmic rays, etc. Well into the ultraviolet is about the lowest frequency that can be mutationally dangerous - somewhere around 10E-8 m, or thousands of times higher frequency than millimeter wave RF.

All millimeter wave RF can do is heat objects. It can do this promptly and well below the surface. With enough power, it can kill you pretty quickly by simple heating, but that's all. With a well focused beam, your brain could be literally cooked basically before you notice it. But practically speaking there is no intensity or duration of microwaves that causes mutations.

Re:Cancer risk?

[Eivind]

Sort of. Higher frequencies mean more energy in each photon. True. At some point the energy in a photon is sufficient to break up complex molecules, true. Molecules being destroyed in your body include the risk of DNA or other important molecules in your cells suffering damage, which leads to increased cancer-risk. True.

BUT, and this is a large BUT, the frequency of where this happens is a long way away from mm-wave, and fairly well-known.

We bathe in this thing called visible light every day. Visible light has a wavelength of around 400 to 800 nanometres, which is to say 400 to 800 billionths of a metre. 1 mm is a *thousandth* of a metre, so we're talking 6 orders of magnitude lower frequencies.

Once we get below 400nm damages start happening, most know that UV-light will increase the risk of skin-cancer, even higher frequencies such as x-rays will cause cancers generally, and not just in the skin since they're ionising *and* more penetrating that UV-light is.

Short answer: ir-wave radio is MUCH too low frequency to even start getting close to ionising.

Re:Radio and optical "windows" in EM spectrum

[dakameleon]

There does seem to be a valley at 60 GHz according to this chart