European – Chinese Cognitive Radio Systems Workshop

Posted in conferences at 12:10 pm by JamesNeel

E3 (End to End Efficiency) is hosting a workshop in Beijing from May 26-27 on “the technical, business, standardization and regulatory impacts of some of the key cognitive radio and cognitive networks solutions developed by the E3 Project”.

Details are pretty scarce on exactly what’ll be covered.


1) This makes for 3 upcoming cognitive radio conferences / workshops in China that I know of.

2)  Although I couldn’t quickly find a confirmation, the strong overlap in membership between E3 and E2R makes me think that E3 is a continuation of E2R.

3) If I’m right about 2, I would expect the workshop to have a heavy emphasis on systems integration with much less emphasis on technical / algorithmic content. Possibly an extended discussion of the cognitive pilot channel concept (put out beacon devices who broadcast information relevant to the area with the goal of simplifying the design of end-products)

Wireless China Industry Summit

Posted in conferences at 11:47 am by JamesNeel

The SDR Forum emails to encourage participation at the Wireless China Industry Summit from September 17-18 in Beijing China. 

It’s mostly focused on existing commercial (particularly WiFi and Zigbee) and public safety standards (Tetra), but there is a cognitive radio track in which I see no talks actually on cognitive radio. This might change later as they’re still accepting applications to speak / present by contacting contact Peter Lee at +852-2865 1118 or email: peter.lee@infoexws.com


Wireless @ VT Wireless 2008 Summer School

Posted in conferences, shameless self-promotion at 2:52 pm by JamesNeel

Wireless @ Virginia Tech will be hosting its annual “Wireless Summer School” at Virginia Tech from June 4-June 6. Registration fee is $720 with discounts for presenters and W@VT affiliates.

The conference combines a modest paper track with an extensive tutorial track from professors and industry researchers. The majority of the focus is on cognitive and software radio. In addition to a keynote from Joe Mitola III on “The Future of Cognitive Radio” (June 4) and numerous papers and posters on cognitive radio, the following are tutorials pulled from the schedule (pdf) which I think are relevant:

J. Mitola, The Future of Cognitive Radio (June 4 – Keynote)

 Selected June 4 Tutorials 

L. DaSilva & A. MacKenzie, “Cognitive Radios, Cognitive Networks, and Dynamic Spectrum Access”

J. Neel & J. Reed, “Emerging Wireless Standards” (basically a hyper-compressed version of this)

 Selected June 5 Tutorials

B. Farhang-Boroujeny, “Signal Processing Techniques for Spectrum Sensing and Communication in Cognitive Radio Networks”

R. Zekavat, “Wireless Positioning Technologies for Mobile Ad-hoc Networks”

Selected June 6 Tutorials

F. Kragh & C. Dietrich, “Hands-On Introduction to SCA-Based Software Defined Radio (SDR) Education and Research”

S. Kadambe, “Signal Detection and Classification”

More Quick Links

Posted in conferences, TV Bands at 1:52 pm by JamesNeel

CrownCom emailed a reminder that their 3rd quasi-annual conference will be May 15-17. (I’m not going – too expensive for my little travel budget to fly to Singapore.)

Slate has an overview of the issues involved with secondary access in the TV band. Nothing that new or insightful, but take this as a measure of how mainstream this issue is becoming.

The SDR Forum will be hosting a workshop on June 19th in Portland to discuss the secondary use of TV Spectrum. More information is available here. It’s part of the quarterly SDRF meeting and costs $350 for the whole meeting which runs from June 16-19. (I don’t know if I’m going. Probably not.)


Towards a Virtual Cognitive Radio Economy

Posted in shameless self-promotion at 4:05 pm by JamesNeel

That’s the title of an abstract I just submitted to DySPAN08 (you have until the 17th! Tick Tock! Also ignore the DySPAN CFP date, what matters is the submission closing date given by EDAS ). (And no, this wasn’t motivated by the thought of using screencaps from World of Warcraft in a technical presentation. Well ok maybe it was a little. I really do think it’s a good idea.)

Basically, in my preferred vision of the future, all interactions between cognitive radios (not just spectrum access!) would occur within the context of a virtual economy. There’s a number of things that will have to be developed to pull it off (like a well-defined property rights, reputation mechanisms, mechanisms for interfacing with the “real” economy) which will be discussed in the paper along with some basic properties of a virtual cognitive radio economy (broad assurances of stability and convergence with perfect information, extensibility to any new service, automated load balancing, reduced information transfer, simplified movement of information across domains) and some other stuff (like what are the features of a virtual economy?).

Now I’ve got a month to write it. The abstract is below the fold. If there’s things you think I should address, feel free to leave a comment. I’ll also try and post working drafts as I go along in the hopes of getting feedback before I submit the final version. Read the rest of this entry »


Fixing the D-Block

Posted in 700 MHz at 10:51 am by JamesNeel

While the SDR Forum is putting together a nice document on technical fixes to D-block challenges (when it’s public, I’ll post a link), I remain convinced that it’s the business side that’s the bigger stumbling block. My quick thoughts on possible methods to fix the business aspects of Block-D.

1) Set up a government sponsored enterprise (GSE) (think Fannie Mae) and allocate the spectrum to it.

My rationale: the public/private partnership is scary to private companies (for a variety of reasons) and puts a lot of control over a private network in public hands. Because there’s also commercial uses, it doesn’t quite make sense to treat the nationwide spectrum like a traditional public safety network. In my mind, GSEs serve a similar quasi-public/quasi-private role and I think similar mechanisms could be used to ensure the spectrum gets put to use in the way that best serves the needs of government agencies while yielding some added benefits to the economy.

2) Rather than having the service fees negotiated after the fact by the public-private partnership, go ahead and state them up-front.

My rationale: Markets tend to do a better job of clearing when there are fewer unknowns and the D-block is riddled with unknowns.

3) Give an added tax break for deploying D-block equipment.

My rationale: Obviously, the commercial market thought the spectrum was over-priced. However, having a high price serves to keep out non-credible bidders. One way to lower the price is to cut payments on the backside. If structured right, it could give a significant incentive to building out and serving the public’s need.

4) Change the bid for D-block spectrum from a payment to a deposit returned as public-safety service is enabled.

My rationale: Same as for #3, but with a different mechanism. Again, there’s lots of room for tuning incentives here.

Quick Links

Posted in conferences, Jobs, spectrum at 9:40 am by JamesNeel

(link) Keith has posted a list of the groups giving DSA demonstrations at DySPAN this year.

(linkKey folks from MeshNetwork started a business to play Spectrum Middlemen – it’s called SpectrumBridge. (h/t)

(link) The FCC is hiring technical folks (entry level and 2 senior spectrum policy positions).

(link) Valencia is accepting applications for a PhD student interested in researching cognitive radio.


1900.2 approved

Posted in cognitive standards at 1:21 pm by JamesNeel

Updating this earlier post where the draft was approved out of the committee, Stephen Berger emailed on March 28 (I’ve been busy) to note that 1900.2 (Interference & Coexistence Analysis) has been approved by the IEEE Standards Board which means it should be published shortly.