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DigiBnetwork Launches First DAB+ DIN Car Radio Receiver

March 22, 2010 in Uncategorized by Administrator | 4 comments

A new receiver is always good news for an emerging technology like DAB.

A more interesting aspect of this launch though is the context that made it possible.

DigiBnetwork, a commercial broadcaster in Malta, convinced a manufacturer to produce a new DIN car receiver. DigiBnetwork went as far as to create and own this new “bluestate” brand. DigiBnetworks now sells the receiver through EBay and its website. This, in a sense, represents a “verticalized” business model as DigiBnetwork has control over a whole DAB ecosystem: content, network, receivers. We typically know this type of control from mobile communications operators.

I find this development quite exciting because it shows that even a small country like Malta can influence new developments in consumer electronics. With this development, it looks like the huge economies of scale and size of markets are not required anymore to justify the production of new devices. This is something we’ve been saying for a few years now with our Openmokast project which we hoped would catalyze the emergence of broadcast smart phones MADE BY BROADCASTERS.

The “bluestate” car receiver seems to be a step in this direction. Congratulations DigiBnetwork!

Lets see now who comes up with the first broadcaster-led smart phone.

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My eComm 2009 Talk Now Available on Video

December 2, 2009 in Applications, Consumer devices, Mobility by Administrator | No comments

I’m happy that my eComm talk finally got published online, 8 months after the conference. Events sponsors got published much earlier but hey, that’s fair for a professionally produced clip. I must admit that the AV infrastructure and the team at the event were excellent.

My talk was titled: “Mobile Digital Broadcasting: An Infrastructure for One-to-Many Converged Services”. We took this opportunity to officially release our Openmokast open source software framework. I was happy that my live demo worked as expected!



We had prepared a clip just in case the “demo effect” would hit on me on stage. Luckily this was not the case but the clip (which is more detailed than the live demo) can still be seen on our crcmmb Youtube Channel or here below:




And here are the slides I used for this presentation:

eComm Presentation

View more documents from Francois Lefebvre.

eComm was also for me a great occasion to meet with David Burges who presented his OpenBTS project live using the USRP as well. His demo looked incredibly like mine except he demonstrated live cell phone communications going through his GSM open source base station. There are lots of commonalities between our projects but essentially, both are about democratizing communications technologies to catalyze innovation.

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Broadcasting the Twittersphere

July 8, 2009 in Applications, Infrastructures, User Generated Media by Administrator | 3 comments

I think that Twitter and micro-blogging in general have properties that could be exploited along with broadcasting services. I’ll write my thoughts about this later on.

As a first step in this reflexion, I’d like to estimate the total bandwidth of Twitter, that is, how many kilobits per second are being Tweeted on average.

I made a similar exercise some time ago with regards to the blogosphere in a post titled “Broadcasting the Blogosphere: 30 million voices for the price of one!”.

So I found some twitter services that provide relevant data. For example, TweeSpeed is an instant speed meter that shows the current number of tweets per minute. A graph showing the speed per hour during the last week is also available. A quick look at that graph now suggests that 700.000 tweets per hour would be a reasonable approximation for last week’s average, excluding the peek caused by the “Michael Jackson Effect”. Twitpocalypse currently reports 221 tweets per second which results in a similar value (221*60*60 =795.600 tweets per hour ). On another front, the recent HubSpot State of the Twittershpere report provides similar amounts on a daily basis instead of per hour. I suspect that this is a mistake. I’ll be pessimistic and take the largest number. The Hubspot report also informs on the distribution of actual tweet length. I’ll average the tweet length to 110 characters per tweet.

So the math goes like this:

110ch * 1byte/ch * 700k/hour = 77 Mbytes/hour

or

TOTAL TWITTER BANDWIDTH = 170 kbps !

Again, very surprising results! The current Twitter bandwidth is barely higher than a typical Internet or DAB radio station. The whole Twittershpere would only require to sacrifice a couple of off-air DAB stations in every market. I feel that very innovative datacasting/social applications could be built based on this!

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FemtoDAB

June 24, 2009 in Applications, Consumer devices, Infrastructures, Services by Administrator | 4 comments

According to this article, Vodafone will be next week the first mobile network operator to launch a femtocell product in Europe:

“Looking like a home router, femtocells give 3G coverage indoors, and use home broadband to connect calls across the Internet to the mobile network.”

“… will be available on different price plans… Essentially, the femto is free to anyone on a £30 contract, and £5 otherwise – including dongle customers”

Femtocells are in fact compact devices (similar to Wi-Fi routers) that act as very low power cell phone base stations that can be installed in end-users premises. Typical cell phones can connect to them instead of the remote “high-power” towers operated by mobile network operators. Femtocells carry the usual communication services through standard Internet connections in homes and offices.

Key benefits to operators (O) and users (U):

  • Better in-building coverage (O, U)
  • Overall network infrastructure can eventually be operated at lower power levels (O)
  • Off-loading cellular networks (O)
  • MNOs can still charge service costs while using end-users resources (Internet) (O)
  • Use the mobile device at home at lower rates (U)
  • Does not need regular phone service at home anymore (O, U)

Could this femtocell approach be exploited in the context of digital broadcasting as well? At CRC, we have developed a compact software transmitter for DAB. This platform could be further integrated as a low-cost personal DAB transmitter or FemtoDAB cell!

Such a FemtoDAB approach could offer interesting benefits:

  • Better in-building coverage (O, U)
  • Overall network infrastructure can eventually be operated at lower power levels (O)
  • Outdoor, indoor roaming with the same device (broadcast enabled handhelds) (U)
  • Transmission of additional Internet radio content in the femtoDAB cell (U)

One of the challenges will be to make FemtoDAB more attractive than the Wi-Fi options.

Do you see any use cases for FemtoDAB?

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