The Blog of Hans Eisenman

World record 26 terabits per second data transmission achieved

With video content consuming ever more bandwidth, the need for faster data transmission rates has never been greater. Now a team of scientists at Germany's Karlsruhe Institute of Technology (KIT) are claiming a world record in data transmission with the successful encoding of data at a rate of 26 terabits per second on a single laser beam and transmitting it over a distance of 50 km (31 miles). The scientists claim this is the largest data volume ever transported on a laser beam and enables the transmission of 700 DVD's worth of content in just one second.

With no electronic processing methods available for a data rate of 26 terabits per second, the team developed a new opto-electric data decoding process. This process relies on purely optical calculations to break down the initial high data rate into smaller bit rates that can then be processed electrically. The record-breaking data encoding also employed the orthogonal frequency division multiplexing (OFDM) scheme based on Fast Fourier Transformation (FFT) mathematical routines that is commonly used in mobile communications networks including digital TV and audio broadcasts.

Because energy is required for the laser and a few process steps only, the team says the new method is not only extremely fast, but also very energy efficient.

"Our result shows that physical limits are not yet exceeded even at extremely high data rates," says Professor Jürg Leuthold, who led the KIT experiment. "A few years ago, data rates of 26 terabits per second were deemed utopian even for systems with many lasers and there would not have been any applications. With 26 terabits per second, it would have been possible to transmit up to 400 million telephone calls at the same time. Nobody needed this at that time. Today, the situation is different."

The latest breakthrough follows on from the previous high-speed data transmission record set by the KIT scientists in 2010, when they successfully exceeded the data rate of 10 terabits (or 10,000 billion bits) per second.

The KIT experiment involved companies and scientists from all over Europe, including members of the staff of Agilent and Micram Deutschland, Time-Bandwidth Switzerland, Finisar Israel, and the University of Southampton in Great Britain. The experiment is detailed in the journal Nature Photonics.

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via gizmag.com

Transmit 700 DVDs in one second. Wow!

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Introducing Music Beta by Google

via youtube.com

Here's a great (hopefully--won't know until they accept my request to try it) new service from Google. If this performs as advertised, it will give Apple a run for their money. iTunes requires you to physically connect to your Mac whereas Google is saying you'll be able to "stream" your music right to your phone. Think Pandora only it's your music you're playing, not their suggestions.

You can upload your whole library and have it accessible from any PC or mobile.

Watch and post a comment. What do you think?

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Tech Tip: Associate Non-Gmail Email Address With Gmail Acct

Sometimes it's necessary or preferred to use some of the cool, collaborative features in Google Docs without having to log in with your Gmaiil address.  Here's a great way to do it, by associating your non-Gmail address with your Gmail account.

If you want someone to share a Gdoc with you but use your work email for notifications, you can give that to them instead of your personal Gmail account.

I've given this to two different people this week and so I thought I'd blog it out to the world too.

From: http://googlesystem.blogspot.com/2008/01/associate-email-addresses-with-google.html

Associate Email Addresses with a Google Account

Alternate email addresses are useful if you forget the password of your Google Account and now you can add more than one. In your account, click on Edit next to "Personal information" and associate additional email addresses with your Google Account. Note that you can't add email addresses already associated with another Google Account or Gmail addresses.

After you associate an email address with your account, Google sends a confirmation message to authenticate that the address is actually yours. An added benefit is that your other email addresses are connected to your account and Google can use this information: for example, Google Calendar shows you the invitations sent to any of the associated email addresses. You can also log in by using any of the additional email addresses.

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Cool New Development from Google Docs

Check out this new improvement from Google Docs--this will mostly be of interest if you are already using it, or are using some other "cloud" (on the Internet, not your PC) storage service.

Posted via email from Hans's posterous