Slashdot Mirror


Motorola Field Tests Wireless Broadband At 300Mbps

cft_128 writes "Motorola Labs just finished field testing its new ODFM (Orthogonal Frequency Division Multiplexing) wireless broadband technology that prove it can attain 300Mbps. This is only a test, but it is an order of magnitude faster than the fiber to the premises that Verizon is now starting to offer. They do mention that the final network would only see 20Mbps sustained and 100Mbps peak."

31 of 138 comments (clear)

  1. "Wireless" by Capt'n+Hector · · Score: 2, Interesting

    Suddenly, the iPhone is making a whole lot of sense.

    --
    Quid festinatio swallonis est aetherfuga inonusti?
    Africus aut Europaeus?
  2. ODFM???? by gotr00t · · Score: 4, Informative
    Wouldn't it actually be called OFDM because its supposed to be an acronym for "Orthogonal Frequency Division Multiplexing?"

    (referring to the text in the article)

  3. Re:so what does this mean for us? by NattyDread · · Score: 2, Funny


    Why, Jimmy ... more Spam, of course!

    spam, spam, spam, spam
    spam, spam spam, spam... ;)

    --
    Maybe the rain Isn't really to blame. So I'll remove the cause, But not the symptom!
  4. How long until WiLan sues 'em? by mcg1969 · · Score: 3, Interesting

    Can't be too long. They think they patented all OFDM technology, it would seem.

    1. Re:How long until WiLan sues 'em? by chriso11 · · Score: 4, Insightful

      Actually, the digital radio in Europe and HDTV broadcasts also use OFDM, so I guess we can find out by seeing when WiLAN sues them...

      That said, OFDM is amazingly elegant and efficient (in use of BW). It just requires the receiver to work harder to demodulate the data. So with a 300MB/s peak rate, you will need a much more powerful processor than 802.11g applications. So don't go looking for this in a portable solution for a long time...

      --
      No, I don't trust in god. He'll have to pay up front, like everybody else.
  5. Free Software Automobile Telemetrics? by lofi-rev · · Score: 5, Interesting

    "..traveling at typical highway speeds (in excess of 100 kilometers per hour or 62 mph)."

    With a connection like that you could easily set up some pretty cool homebrew telemetric systems. Maybe have a community database of good restaurants?

    "Car - please direct me to the nearest Thai restaurant favored by Slashdot readers who enjoy icefishing..."

  6. 300Mbps ? by arazor · · Score: 5, Insightful

    Damn that is extremely fast but here in rural south east Ohio I would settle for just 1Mbps. I'm currently stuck at 28.8k and thats on a good day with my USR V.Everything Courier modem sigh...

  7. Order of Magnitude faster than Fiber? by Shuasha · · Score: 4, Insightful

    That's the most retarded thing I've seen in a long time. Fiber can take more than 10 Gb/sec.. The paid offering for fiber to the prem is just slow.. they don't want to cannibalize their paid commercial optical products. You can't compare a current product offering to a something that's being tested. The marketing people haven't been involved yet.

    1. Re:Order of Magnitude faster than Fiber? by xchino · · Score: 2, Insightful

      What I think is retarded is people who can't seem to read the post. It says it's order of magnitudes faster than the FTTP (Fiber to the premises) that Verizon is rolling out, which they claim will carry up to 30Mbps, though they didn't release prices for anything above 15mbps. It did not compare it directly to the transfer rates of fiber or any other data line. Try a little bit of critical thinking before you post next time. They are talking about service levels, not maximum transfer rates for any one type of connection. And it quite possible could carry more bandwidth, since you can't saturate wireless connections like you can with physical lines. If i have 10 people on a 100Mb cat5 run, they can each get 10 mbps. If I have 30 people on a 54mbps wireless connection they can all get 54mpbs.

      --
      Everyone is entitled to their own opinion. It's just that yours is stupid.
    2. Re:Order of Magnitude faster than Fiber? by jrockway · · Score: 4, Insightful


      > If i have 10 people on a 100Mb cat5 run, they can each get 10 mbps.

      If it's switched, and it's between the users, then they can each get 100Mbps to each other. To the "main server", whatever that may be, they do share 100Mbps, though.

      > If I have 30 people on a 54mbps wireless connection they can all get 54mpbs.

      Wrong. Everyone shares the 54mbps minus overhead. If any of those 30 get over 1Mbps you'll be lucky.

      --
      My other car is first.
    3. Re:Order of Magnitude faster than Fiber? by Cecil · · Score: 2, Interesting

      It's only an order of magnitude faster than Verizon's offering if there are less than 10 people using it. Wireless spectrum is a shared medium, FTTP is not. Yes, it all gets shared at the internet uplink anyway, but that's beside the point.

    4. Re:Order of Magnitude faster than Fiber? by alhaz · · Score: 2, Insightful

      If it's switched, and it's between the users, then they can each get 100Mbps to each other. To the "main server", whatever that may be, they do share 100Mbps, though.

      Obviously you've never tried to manage a large scale switched network! And by large i mean several miles.

      No matter how nice your switch is - even uber-expensive Alteon switches - the backplane is NEVER what they say it is. Ever. Ever ever.

      I've worked at an experimental isp that delivered 100mbps to the home. I've worked at a testing lab that performend throughput analysis on high end switching gear. ten people on ten ports of a 100mbps switch will not get 100mbps to eachother. ever. Not ever. Hasn't happened yet. Won't.

      Yeah, they *say they have various gigabits on the backplane. Whatever.

      Worse yet, it's never just you and nine other people. And due to the effects of broadcast radiation, and the cold hard truths about ethernet, even on super special hardware you rarely see more than 70% efficiency on switched ethernet in real actual real-world implementations that allow people to get done what they need to get done.

      As for the 54mbps wireless - Not a damn one of you will get 54mbps. Even one person on a 54mbps wireless network won't get 54mbps. The overhead in the physical layer and the signalling properties of rf end up meaning that the best case scenario is 27mbps.

      The problem with wireless, above and beyond that, is that you're back to a totally broadcasted network, and there is nothing you can do about it short of giving every station it's own frequency.

      so, ten people on a hub trying to talk to eachother at full speed. Yeah. Zippy.

      --
      This is just like television, only you can see much further.
  8. 3 Motorola stories in a day? by Anonymous Coward · · Score: 3, Insightful

    Maybe ./ needs a Motorola logo...

    Surprised no one mentioned the new V3 nor the A780.

  9. In other headlines by ShadowRage · · Score: 4, Funny

    Today near the Motorola Testing Facility, birds and other wildlife suddenly spontaniously combusted....

  10. Many things to consider... by John+Seminal · · Score: 4, Interesting
    First, I would be happy if I could get 14.4k/sec with my wireless phone, but they charge a monthly fee just to use their "special services", a data charge per kilobyte, and the normal air minutes. I would use my cell phone to check emails, and that would be about it. Maybe to read the newspaper. So for me, I don't need anything faster. But I don't want to pay three times for the same service. I can only imagine how much any faster internet service would cost. I fear the day of the $100 a month cell phone bill is near.

    There is a second concern that I can think of. If a phone is able to get broadband speed and has a videocamera attached, it could cause privacy problems. Do we really want a new kind of voyer with these devices??

    What else could broadband on a phone be used for?? I doubt anyone will use their cell phone as a computer. A phone is first a phone and secondly all other things. Plus, cell phones have such limited battery use times, that I doubt anyone would really use those other features for more than a very limited time.

    --

    Rosco: "If brains were gunpowder, Enos couldn't blow his nose."

    1. Re:Many things to consider... by memco · · Score: 2, Insightful

      "I fear the day of the $100 a month cell phone bill is near." You're a little late on this one. know several people who've gone over that on more than one occasion (myself excluded).

      --
      Get me a meat pie floater!
    2. Re:Many things to consider... by NanoGator · · Score: 2, Informative

      "First, I would be happy if I could get 14.4k/sec with my wireless phone, but they charge a monthly fee just to use their "special services", a data charge per kilobyte, and the normal air minutes. I would use my cell phone to check emails, and that would be about it. Maybe to read the newspaper. So for me, I don't need anything faster. But I don't want to pay three times for the same service."

      Not sure who you're using, but ATTWS and Cingular charge once, and it doesn't take up airtime. For like $8/mo. I get 1 or 2 megabytes a month. After that, it's like a penny a K or something like that. (I'd know that for sure if I ever managed to use 2 megabytes. T-Mobile offers an unlimited service for $30/mo for the hardcore users with a Blackberry or Sidekick. You pay 2 times (not 3) IF you go over your allotment. This shouldn't be all that surprising to any cell phone user.

      "There is a second concern that I can think of. If a phone is able to get broadband speed and has a videocamera attached, it could cause privacy problems. Do we really want a new kind of voyer with these devices??"

      New kind of voyeur? This problem's already here. You've never watched America's Funniest Home Videos? Never seen a phone that can take photos? You're 90% of the way to streaming video from a phone. What added problem is this going to add? Isolated incidents at best. Most places where you could hide a phone, it wouldn't take much more to set up a video camera and digitize the video.

      "What else could broadband on a phone be used for??"

      A damn cool PDA. Never seen a Treo or a Pocket PC phone?

      --
      "Derp de derp."
  11. Uhh, hey man, like, use it for your HOME PC by cbreaker · · Score: 4, Interesting

    Who said this was for phones?

    Wireless broadband COULD be used for phones *I guess* but it's more likely to be used for people's home PC's or notebook PC's, at least at first.

    Wireless technology has a MUCH better chance at rapid deployment in most areas because all you need to do is set up some antennas - whereas with fiber or other wired networks you have to lay down millions of meters of lines to reach everyone's home.

    I believe that it's going to be the method of network access for the future. Cheap deployment, fast, and mobile.

    Unless you live in NYC or some other major metropolis, don't expect very high speed internet access within the next 10 years or more if you're waiting for verizon's fiber. But if Motorola deploys it's wireless system on a wide scale, you could see it in half that time.

    --
    - It's not the Macs I hate. It's Digg users. -
  12. 300Mps On Its Own Is Meaningless by femto · · Score: 4, Informative
    300Mps in the lab is meaningless. If you have a GHz of spectrum available one can easily achieve 300Mbit/s using 20 year old technology.

    The proper question is "What is the spectral efficiency?"

    Spectral efficiency is a measure of the data throughput per unit of bandwidth. It is measured in bits per second per Hertz (bit/s/Hz).

    Existing WLANS get around 4-5 bit/s/Hz under ideal conditions. State of the art lab demonstrations get in the range 20-40 bit/s/Hz. To put this in context, 20-40 bit/s/Hz is the equivalent of >400Mbit/s in an existing 22MHz WiFi channel.

    So, does anyone know the spectral efficiency of Motorola's system?

    1. Re:300Mps On Its Own Is Meaningless by Beryllium+Sphere(tm) · · Score: 3, Informative

      >So, does anyone know the spectral efficiency of Motorola's system?

      The article says they did this in a 20 MHz channel, corresponding to 15 bps/Hz. That's far outside the range I'm used to.

    2. Re:300Mps On Its Own Is Meaningless by Kiryat+Malachi · · Score: 2, Informative

      No....

      Baud equals *symbols* per second. Once you start to get into modulations that get multiple bits per symbol, baud != bits per second.

      56 kbps modems actually transmit at 8kbaud (7 bits per symbol, 8000 symbols per second), using PCM modulation, instead of the QAM/trellis modulation all the other high speed modems use. 2400 bps modems were 600 baud, 9600 modems were 2400 baud, 14.4 modems were 2400 baud. I believe 28.8 and 33.6 run at 3600 baud, which is about the most you can expect from the analog PSTN; 56k relies on the digital portion, essentially, which is how it achieves 8kbaud.

      --

      ---
      Mod me down, you fucking twits. Go ahead. I dare you.
      (I read with sigs off.)
  13. Re:Game playing by Cyberop5 · · Score: 2, Informative

    I've currently got a Motorola Canopy system (precursor to this, I imagine) and its pretty solid. It has a max throughput of 3MB/s - shared. But you can cluster antenas for more connections. It doesn't drop packets and gets great pings, much better than my Linksys 802.11g AP. Point-to-Point DES encryption. High Index BFSK modulation.

    I do, however I see the actual hardware go offline far to frequently, although I suspect it has to do more with the ISP than the equipment.

    --
    Urgo: "I want to live. I want to experience the universe and I want to eat pie!"
    Jack: "Who doesn't??"
  14. Power consumption issues with mobiles by berkeleyjunk · · Score: 3, Interesting

    I really don't think this can be used for mobile nodes. Power consumption issues with OFDM might relegate this technology for use only with fixed nodes. I don't think we will have a usable laptop adapter for this technology. I have experience using a 802.11a adapter on my laptop and it sucked the life out of my laptop's battery at express speed.

  15. Upside on fiber far higher than the RF by RhettLivingston · · Score: 2, Informative

    To compare this with fiber is just ridiculous. Even if it is cheap fiber (I would hope they are smart enough to put down something with at least a couple of orders of magnitude of growth room), the fiber will have growth room way beyond the 300MB speed of this technology. The numbers being reported now are the maximum potentials. Just one more case of rolling out an infrastructure with no room to grow.

  16. Work/Life Balance by bastardadmin · · Score: 4, Funny

    There goes free time for all IT Workers.
    High Speed VPN access from anywhere, oh joy.
    Now what am I going to do when I want to sleep off my hangover on the commuter train?

  17. Re:Marketers? by Shuasha · · Score: 2, Insightful

    You would think that that's the way it works, but it's nothing like that. My company has TONS of spare capacity on their network, and we don't lower prices.. we occasionally run promos, but that's it. We price things so we don't shoot ourselves in the foot. Why buy a 45 Mbit DS3 for $2500/month when you can buy a GigaBit connection for $2800?

  18. We've got that beat in Japan by putaro · · Score: 4, Informative

    Shared wireless bandwidth doesn't sound that appealing. I just upgraded my home DSL service here in Tokyo to 24Mbps (over copper). Yahoo BB is offering 45Mbps over copper. And, you can get fiber at 100Mbps (http://www.asahi-net.or.jp/en/tepco.html) from TEPCO (the electrical utility).

    I suspect that one of the reasons this is available here is the incredible density you find in Tokyo. I'm about 3 blocks away from the local CO. Rural areas probably are not getting these speeds

    Of course, the key question is what's upstream from you - right now I'm only pulling down 800Kbps across several BitTorrent downloads so your mileage will definitely vary.

  19. Goofy article by pavera · · Score: 2, Interesting

    Yeah, Verizon is rolling out their service at 30mbps, and this can attain 300mbps in the lab... well, I've seen 1tbps in the lab over fiber... so touch that wireless! Anyway, I work at a ftth provider, we have 1gbps dedicated to every home, switched network, not shared (like wireless is).

    We give up to 50mbps for internet... as our bandwidth gets cheaper, we'll be bumping that up to 100mbps, wireless can't hold anything to fiber.. besides, you can't do reliable voice over wireless (latency issues) and certainly not video which we provide as well, more than 5ms of latency and your video stream is toast...

    Wireless will never be a reliable triple play provider, which is the holy grail in telecommunications right now.

  20. And what upstream? by Gldm · · Score: 3, Insightful
    I've had a 10mbit downstream from optimum online since 1997 or 1998. I've rarely needed more downstream as most sites can't push anywhere near that. Even a big server like ATI or Nvidia's driver hosting can barely hit 6mbps to me, even with TCP recieve window tweaks.

    When are we going to see decent upstream at the home? 128kbps doesn't cut it. I rarely see any offering at all over 256kbps upstream. OOL offers 1024 but as soon as you begin actually USING it they cap you back to 150 to keep the network from congesting to death.

    But Joe McSixpack doesn't care about that, he just wants to grab porn faster and maybe let his kids get on aol and watch some crappy realvideo trash without whining. The ISPs are so paranoid about people running servers on their networks and losing their ability to charge 5000% markup for the same connection for "business" users even though they still block ports like 80 and 25. Woe betide the industry if people realised that 1.5mbps T-1 they've been paying hundreds or thousands a month for since the early 90s is now SLOW.

    It's gotten to the point where I've pretty much given up hope of ever seeing a real broadband connection in my lifetime. By the time I can afford something with decent upstream, the idiots in washington will have ISPs so paranoid that everyone will be mandatorily placed behind a NAT and their servers will continually portscan you looking for servers and p2p apps.

    --

    Introducing the new Occam Fusion! Now with sqrt(-1) fewer blades!

  21. Of course it's really fast. You're alone. by Animats · · Score: 2, Insightful

    Of course it's really fast when you have the whole band to yourself. You could get 10Mb/s over analog cell phones if you could tie up all 860 channels. Big deal.

  22. fixed wireless by sloggo · · Score: 2, Interesting

    I have used fixed wireless as my connection to the internet for over 4 years now. It is a 5mbs link connected to a mountaintop center point about 20 miles away using MMDS technology. I get peak speeds that approach what 3 T-1s would provide at a reasonable monthly fee. Downloads from capable servers provide data at rates of around half a megabyte a second. It is extremely reliable and costs about the same as a cable hookup that would provide only one tenth the speed. For those who say it is not as fast as a fiber hookup, you are correct. However no fiber hookup can compete at these prices (at least not for a while). After the central tower is built the only cost to install is the installation of a pizza box sized antenna on the roof of the home. When compared to the cost of laying fiber to reach homes this is dirt cheap. It is also very reliable - I have experienced about 5 hours of total downtime in over 4 years of use (3 or 4 incidents). I know many cable users that would be happy if they only had 5 hours of downtime in a week. Fixed wireless is a very viable high speed home connection alternative. The main problem with the technology my hookup uses is that line of sight to the central tower is required which makes it a very hard install in the flatter cities. The spread spectrum choice would eliminate that problem. (Mine is microwave based)