Upcoming speaking engagements

Posted in Conferences, SDRF, Shameless self-promotion, game theory, standardss at 3:44 pm by jody

Eventually, I’ll get around to posting slides for my talks from last summer on, but here’s where I’ll be in the next six months or so and the likely topics:

  • Jan 24, Kauai, HI - Waveform Diversity and Design Conference on the application of game theory to cognitive radio in the context of networking, adversarial scenarios, and learning. 
  • March 15, San Diego, CA - Winn Forum Disaster Recovery Workshop on CR-related solutions for facilitating Disaster recovery networks. This is the day after the WinnF meeting in San Diego.
  • March 15-16 at JSTEF, San Diego, CA on Cognitive Spectrum Management. That’s limited access, and yes, that overlaps with the previous workshop, but the locations are close.
  • April 18-20, Poznan Poland - European Wireless Conference 2012 on practical aspects of cogntivie radio networking related to cross-layer design
  • May 30-June 1, Blacksburg, VA at the 2012 Wireless Symposium and Summer School a tutorial either on either the state of wireless standards (with an emphasis on CR standards) or a tutorial on the design of cognitive radio networks (with an emphasis on game theory) - I haven’t decided yet [yes, Jenny, I'll get you a proposal today]
  • June 27-29, Brussels, Belgium, SDR 12- WinComm-Europe 2012, I have until Friday to come up with a topic, but will likely be on common communications features of collaborative intelligent systems and recommendations for their design.
  • July 10-13, Paris Summer School on Game Theory and Wireless Networks


Random CR News

Posted in 802.22, Conferences, cognitive network, military at 4:36 pm by jody

(news link, Get 802 links) 802.22 published

Old, but I’ve not slept much the last few weeks. The Get802 link is where the standard will eventually appear and eventually (another 5 or so months) be free.


My comments:

  • I’m curious to see if it’ll ever get used given that I assume 802.11af and TD-LTE in the white space will “win”. Maybe a role for a separate sensor standard.
  • Amused to see it referred to as “Super WiFi” which it’s not (wrong MAC and so on). If that’s the marketing they’re going with, 802.22 has lost before it ever starts. What use it does get is as more of a WISP standard and for backhaul in rural areas.

(link) DSA 2011 - 2011 IEEE Workshop on Dynamic Spectrum Access: Collaboration Between the Technical, Regulatory and Business Communities (DSA) [That's an insanely long name for a workshop]

(Commercial focus)

Sep 19 in DC


(link) Spectrum management / DSA conference (DoD Focus)

Sep 27 in Washington DC. I’m a speaker.


(link) IEEE Technical Committee on Cognitive Networks

 Just news to me that it existed.

(link) Article on issues with incentive auctions

Another issue with 802.22 being successful is it’s not able to get a head start on WiFi and LTE due to regime uncertainty, which notably includes the question of if there’s going to be white space spectrum at all. The FCC is somewhat annoyed that there’s not white space products yet, but if there’s pending legislation that all but implies that there won’t be any spectrum left over for unlicensed use, it’s *really* risky to try to bring product to market.

The article highlights one of the more bizzare aspects of the considered legislation, namely that the way spectrum remains unlicensed is if there’s a collective bid for unlicensed use that outweighs the largest bid for licensed use. That’s setting up the unlicensed use to fail due to the public choice issues of requiring collective action for diffuse benefit as well as trying to pit a privately funded public good against a privately funded private good.


Quick Links 7/21/11

Posted in Cognitive Radio Technologies, Conferences, DSA, NTIA at 5:24 pm by jody

(link) We’re the featured tech company in the Lynchburg Business Magazine this month. I’m thrilled that an otherwise serious publication included “ubergeek” in one my quotes. Not much in the way of actual details on the business though, which is ok.

(link)The IEEE Workshop on Dynamic Spectrum Access: Collaboration Between the Technical, Regulatory and Business Communities

  • 19th September 2011, Washington DC
  • Sponsored by IEEE TCCN, IEEE DYSPAN Standards Committee and the IEEE COMSOC Standards Board is now open for registration.

(link) International Symposium on Advanced Radio Technologies (ISART): Developing Forward-Thinking Rules and Processes to Fully Exploit Spectrum Resources

  • ISART 2011—Case Study 1: Radar Bands
  • 27-29, July
  • Boulder, Colorado USA


CR News and Notes 7/13/11

Posted in Adaptrum, Asia, Cambridge Consultants, Conferences, Europe, Microsoft, Quick Links, White Space, regulation, satellite at 9:50 pm by jody

Got an international phone call asking me to start updating the blog more often. I figured the least I could do is post what I also pass along to the WinnForum CRWG (though there you get my more extended editorial comments - if you attend the meetings). So here’s a sampling from the last three weeks.

(pdf) IEEE JSAC CR Call for Papers
IEEE Comm. Soc will start having an annual (or more frequently) journal on CR. Key Dates for the “first” annual JSAC on CR (they’ve done it before, but without the annual plans) :


  • Manuscript submission: January 5, 2012
  • First reviews complete: April 5, 2012
  • Second reviews complete/all acceptance letters sent: June 30, 2012
  • Materials to publisher: July 30, 2012
  • Publication: November 2012

(link) CROWNCOM 2012 has issued its call for papers. Relevant info:

  • Location:Stockholm, Sweden
  • Conference: June 18-20
  • Submission: Jan 16, 2012
  • Notification of Acceptance: Feb 27, 2012
  • Camera Ready: March 23, 2012

(link) CORSA Call for papers on Cognitive Radio and Smart Antennas (for which there needs to be more DSA work). Relevant info (bizarrely to me, all dates are referenced to the US East Coast):

  • Location: Bangalore, India
  • Date: December 12, 2011
  • Initial submission: 30 September, 2011
  • Notification: 1November 2011
  • Camera ready: 15 November, 2011

(link) OFCOM is considering opening up the FM radio bands for DSA, maybe by 2015.

(link) Vietnamese Secondary Spectrum Availability Studies.
In and of itself, not that interesting, but I see it as part of the global trend for permitting DSA.

(link) White Space Trials in Britain began (a few weeks ago - I said some of this was dated).
Adaptrum and Cambridge Consultants have gotten the biggest “bumps” from this, I think. Some activity from Microsoft as well, which weirdly doesn’t appear to be headed up by Victor Bahl.

(pdf) RAFSA (I have no idea what that stands for)
There’s been a lot of CR activity in Brazil recently, and this is one of the projects. Not too far along yet (based on the presentation), but looking at the integration of CR into joint satellite / terrestrial systems.


Illustration of a behavioral attack on intelligent agents

Posted in Uncategorized at 8:41 pm by jody

This is the kind of thing I worry about with cognitive radio networks - exploiting known algorithms with behavioral attacks that otherwise satisfy the policies of the network.

[It's a stock market story, but there's an awful lot of automated, quasi-intelligent agents interacting there, and folks are starting to exploit that fact, so I think it's directly analogous.]


Yesterday, just after 8 pm Eastern we presented a very curious move in NatGas trading on the NYMEX when under very light volume, the NG performed something akin to a sine wave expansion, with about 12 peaks and troughs with ever increasing amplitude, until ultimately it triggered a major sell off when it appeared to touch off an avalanche of limit orders about 3% from the prevailing price, leading to an almost instantaneous 8% drop in Natgas which was promptly recovered.

Yet aesthetic observations aside, this latest algo appears to be nothing more than a limit order-busting market manipulation device, whose sole purpose is to destabilize and generate volatility for the creator of the algo. Curiously, as Nanex indicates, the algo is not limited to Natgas but also appears to recur in other far more liquid instruments, such as the SPY, when a comparable fractal pattern was observed in broad daylight.

Destabilizing attack on automated traders in the gas market
Destabilizing attack on automated traders in the gas market


TVWS Database Providers Selected (All of them)

Posted in CommSearch, FCC, KB Enterprises, Key Bridge, LS Telcom, NeuStar, Spectrum Bridge, TV Bands, Telcordia, WSdb, White Space, companies, database at 5:18 pm by jody

(pdf) Adopted yesterday. (FCC DA 11-131)   


  • All 9 Selected (Commsearch, Frequency Finder, Google, KB + LS Telcom, Key Bridge, Neustar, Spectrum Bridge, Telcordia, and WSdB)
  • Must attend OET Workshops where details will be worked out
  • All must supplement their previous filings to address the 2010 rules updates
  • Each database will have a trial period of 45 days before being released into the wild

Looks like from some of the language that the FCC still wants a heavy hand in everything (see paragraph 15, e.g., OET will make final decisions on issues affecting the databases and their operation and alldecisions will be publicly available.”)


Recent publications

Posted in Cognitive Radio Technologies, Shameless self-promotion at 12:27 pm by jody

Just thought I would highlight a couple things on the main site as I’ve been getting inquiries on both.

(link) Gave an updated version of my standards tutorial yesterday @ SDR 10. For those familiar with my annual tutorials (though this one is semi-annual), this one is a bit shorter than what I normally do at the VT summer school (2 hours instead of 4 hours) which means there’s much more relative emphasis on CR and less depth overall.

(link) Other pubs of mine from recent conferences are posted as well on the Publications page. This includes slides for a talk I gave on practical considerations for cognitive radio networking that has been invited to the best-of-conference journal that will be released next year.

(I’ve also gotten emails from some saying that there’s some browser compatibility issues where pdfs are not showing up as links in Chrome / Firefox. We’re doing a site overhaul over the Holidays and will hopefully fix that then. For now IE works)


A context-aware smart phone (Situations)

Posted in Nokia, context-aware at 10:57 am by jody

In private, I’ve been telling folks that a killer app for CR will be user-context awareness, which is perhaps not a terribly original insight as that was the explicit model that Mitola considered, but in the IEEE wireless research community, I think that model has fallen into a state of what I’ll call benign neglect.

However, last week Nokia launched what I consider to be a big step in that direction with an app they call “Situations” (app page) (press release) (nice blog overview).

Basically, the app uses the following set of triggers:

  • Scheduled.  Set period of time, Set active days, Set during active calendar events.
  • Location. Nearby (GSM location), Current location (GPS fix), From Map (use Ovi maps)
  • Connectivity. Wi-Fi (when in range), Bluetooth

to queue up any of the following changes:

  • Change Ringtones, make the phone go silent or louder, turn vibra on/off, and all the other profile settings.
  • Answer missed calls with SMS. Especially when you set your phone to silent, you can also make it reply to missed calls, from contacts in your phonebook, with a pre-defined SMS.
  • Save Power. Not using phone for a while, like when sleeping? Turn Bluetooth on/off or let your phone change to power-saving mode totally.
  • Change UI theme / Wallpaper. Want to make the phone look different in different situations? Change the Theme during free time vs. when you are at work.
  • Open a Web bookmark or application. Want to see weather forecast for the day when you wake up? Look at the calendar as first thing? Or open your favorite TV show discussion page at show time? Or perhaps change the Device Mode when at work?

To make this into a purer CR context-aware solution (instead of a pure application layer context aware solution), all you have to do (warning: dramatic oversimplification to follow!) is tie these same triggers to situation-based waveform changes.


Recent and Upcoming Events

Posted in Conferences, Europe, SDRF, Shameless self-promotion at 1:49 pm by jody

(pdf) Jeff and I spoke on the subject of the “Second Wave of Wireless Communications” (2nd wave = the explicit incorporation of intelligence) at the Atlantic Council on October 29, 2010. Link goes to the slides

(pdf) I appeared on a MILCOM panel on CR on November 3, 2010 where I argued that there’s waaay too many signal classification / detection papers and effort would be better spent on other aspects of learning about a radio’s environment.

(link) I’ll be @ the ICO-COST 902 meeting November 23-25 in Bologna where I’ll give an overview of CR work in the Wireless Innovation Forum and participate on a panel on when CR will appear commercially. I’m not supposed to have slides for the panel, but seeing how I take the position that CR is already a commercial product (e.g., xG’s cellular stuff, Cisco’s CleanAir, the CRC WiFi system, 802.11 h,y, self-organizing networks in 3GPP, Cambridge’s stuff) listing these with links, data, and such might be useful for that audience and should probably appear in my next set of talks.

(link) I’ll be at SDR 10 in Washington DC November 29-December 3 with a

  • a tutorial with Pete Cook from Hypres on a WinNF CRWG / PSSIG work product entitled Information Process Architecture
  • a tutorial on wireless standards and markets with a particular focus on CR
  • moderating a TVWS panel
  • a presentation on fundamental limits to ADC performance and implications to SDR / CR
  • a presentation on practical issues in deploiying CR networks

I don’t expect to sleep that week.

More CR links 11-13-10

Posted in DSA, Europe, NTIA, devices, research initiatives at 1:08 pm by jody

(pdf) CSMAC (NTIA) Interference Subcommittee Draft / Final Report

Interesting publication which set as a goal to define “harmful interference” (but almost immediately punts on the topic) (FWIW, the primary goal of the document was to define an approach to analyzing types of interference and resolving interference problems).

Random notes that caught my attention:

  • Want continued testing / research on sensing based approaches to DSA,
  • Want studies of cooperative real-time spectrum sharing.
  • Want database DSA radios to be able to be remotely turned off.
  • Push for greater interference rejection requirements at receivers

(link) A nice listing of European CR initiatives.

(link) A Press release announcing CORAL - a WiFi development system for cognitive radio research

Here’s major features on what I’m able to quickly gather on it:

  • Uses the Linux MadWiFi driver
  • Includes an ISM band narrowband sensor and GPS
  • Has a scheduled for of CSMA-CA
  • Number of SNMP, Python and so on APIs for remote / external control
  • Shared sensing messaging (just 802.11y?) and storage
  • Rapid antenna beam switching

For more information

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