Quick Links 3/13/09 [Update]

Posted in 802.19, coexistence, conferences, military, public safety, SDRF, shameless self-promotion, white space at 11:10 am by JamesNeel

ECWS Presentations from 802 Plenary

While I wasn’t there icon_sad, the March 802 Plenary had a major presentation from the ECWS (in fact it was the primary deliverable for the group.) Based on email traffic I’ve read, it looks unclear at this point in what form this will be continuing on as. [Update 3/16/09 – ECWS disbanded, coexistence work continues in 802.19 as a study group with the outputs of two documents “one on coexistence scenarios and one on coexistence mechanisms, with a plan for when the deliverables will be completed, with interim steps” (802.19 note from here and ECWS disbanding coming via email)]

Nonetheless, if you want to get up to speed on their activities, these two links will do a good job.

(pdf) Tutorial. Quite a large file (~ 7.25 MB), but lots of good information.

(ppt) ECWS Chair’s Report. (Just main takeaways from tutorial and much smaller)

(pdf) Spectrum Sharing in TV White Space Workshop.

As part of its June meeting in Detroit (June 15-18), the SDR Forum will host a workshop on coexistence of TV white space devices on June 16. They’re currently soliciting proposals for presentations through April 1.

(no link) Cognitive Radio and Intelligent Transportation Systems at SDRF ITS Workshop

Intelligent Transportation Systems effectively apply the concept of a cognitive system to the management of transportation systems (gather information, recognize patterns, apply rules / reason, learn from past actions). Wireless links play a big role in transferring information and control messages and cognitive radio can help improve the communications quality and availability in this highly dynamic environment. Once cognitive radio is integrated into and fielded with ITS, we’ll have “cognitive systems of cognitive systems”, which is one of the broader trends I see for the future.

As of this week, I’ll be giving a 30-minute talk with Ashwin Amana on cognitive radio and intelligent transportation systems at the SDR Forum ITS Workshop, also at the SDR Forum Detroit meeting (so many great workshops crammed into such a short meeting).

(link) IWCE Panel to Discuss Cognitive Radio

Really, it’s a panel to highlight NIJ’s communications related research efforts. But one of the major thrusts has been cognitive radio. Charles Bostian of VT will be discussing their NIJ-funded efforts to create the Public Safety Cognitive Radio (PSCR) node. IWCE is March 16-20 (Vegas), and the panel is on March 18th, from 1:30-2:45 PM.

(link) EMC Electronica article on embedded SDR and CR.

Not the most illuminating article, but it does note the natural relationship between SDR and CR (though very DSA focused) and the role of embedded processing in realizing CR. Really, this is just an excuse to note that CRT is currently executing a SBIR to realize embedded cognitive spectrum management on JTRS radios (JTRS defines a DoD standard for SDR platforms). (pdf of a flyer we pass out on the topic)

(link) New CR Blog

I don’t know who he is, but James (not me) is posting his notes on his “4th year project on cognitive radio” as it progresses. At least so far, he’s doing a good job of capturing and linking to important papers.


Quick Links – July 18, 2008

Posted in military, quick links, regulation, research initiatives, TV Bands, white space at 3:41 pm by JamesNeel

Or all white space, all the time! But first, some non-white space links… 

(link) Call for more dynamic spectrum policies. Not a lot new there for those active in the policy arena. Key graphs:

“Traditionally, spectrum policy has been all about exclusive licensing for specific service, during extended time periods. The considered opinion now is that static long-term licensing of spectrum hinders fast innovation cycles, and across the board. The fact of the matter is that new technologies tend to diffuse faster than regulations, especially in dynamic sectors like telecom. Already, the considerable strides made in digital technology, such as spread spectrum, software defined radio and mesh networks, do call into question the policy of administrative allocation of exclusive-use licenses.

With novel software, coordination amongst service providers in real time can allow umpteen secondary devices to transmit even while providing the right quality of service and non-interference for cellular customers. The bottom line is that we need proactive spectrum policy to fastforward growth of the most desired applications, as they evolve and take off.”

(link) The US Air Force is funding Finnish cognitive radio research. (I don’t know which Finns. I assume CWC @ Oulu, but I don’t see confirmation on their research page)

Officials from the Air Force, Army and Navy are now funding a Finnish research program that explores new approaches for improving telecommunications network management. 

The ultimate goal is to build on this basic research and create a cognitive network that will use rational decision-making methods to improve the speed and quality of information delivered via Defense Department networks.

(link) Ars Technica has a nice overview on the current round of white space testing.

(link – pdf) The current white space test schedule. Note a sports and entertainment venues are on the schedule.

(link) There was a complaint filed with the FCC on interference from unlicensed wireless microphones. Mmmm politics. I thought I went into engineering to avoid that. (FYI, the Public Interest Spectrum Coalition is not completely new as the article implies; they also were active in the 700 MHz block – see link1 & link 2)

A group calling itself the Public Interest Spectrum Coalition (PISC) and the Media Access Project have filed a complaint with the FCC regarding the unlicensed use of wireless microphones. The Media Access Project has filed a proposed “pathway to authorisation” for existing users that would help to protect new public safety and commercial wireless services operating on UHF channels 52-60 from 17 February 2009.

Michael Marcus has much more on this.


Random notes from the SDR Forum General Meeting

Posted in conferences, military, research initiatives at 3:56 pm by JamesNeel

The following came up during today’s SDR Forum General Meeting downselected to those things which were new / news to me.

SCORED (Software and COgnitive Radio for European Defense)

An overview is given in this presentation (pdf). Appears to combine Thales, INDRA, SELEX, and Ericsson with a primary focus on SDR with the hopes of adapting the SCA for use for European applications. CR architecture appears to be building on E2R architecture. It started in 2007.

NTIA DSA Coordination Group – generally keeps NTIA informed of DSA technology developments (can’t find a link, but it is mentioned on this site which means half of CRT knew of it even if the other half didn’t)

Peter Tenhula noted the # of short some spectrum lease arrangements were actually down in the most recent quarter (27 as opposed to 32). Spectrum Bridge may have entered the market too early, but then again it might pick up during the 700 MHz build-out.

26 FCC IDs for SDR have now been granted (as of June 2008). Of interest, new ones were granted to Aruba and Trango using DFS for ISM / UNII bands presumably on WiFi devices.

Some unspecified government cognitive radio R&D project in Japan is supposed to start up (and specify details?!?) in July 2008. A similar situation is apparently occuring in Korea. If I hear something more concrete, I’ll post links.