tag:blogger.com,1999:blog-5688599.comments2023-10-12T04:54:05.108-07:00Deep Freeze 9JP (Pierre) de Vrieshttp://www.blogger.com/profile/02311009024575927588noreply@blogger.comBlogger111125tag:blogger.com,1999:blog-5688599.post-27138507415642706782022-06-05T21:54:36.230-07:002022-06-05T21:54:36.230-07:00A really interesting and thought-provoking article...A really interesting and thought-provoking article as always. And thank you for the kind words regarding my ideas at Ofcom. <br /><br />There was some of logic behind the idea of using proportional rather than absolute bandwidth when comparing spectrun holdings. Broadly, the value of spectrum is related to the range it can deliver. Broadly doubling the frequency halves the range which means 4x as many base stations to cover a given area. A 10x increase in frequency is 3.3 doublings (2^3.3=10). That means a factor of 3.3 ^ 2 base stations = 11 times more base stations. So very roughly a 10x increase in frequency results in a 10x increase in base stations and hence the spectrum is likely worth 1/10 as much. So a holding of 10MHz at 1GHz is as valuable as 100MHz at 10GHz. <br /><br />This isn't true for all applications - eg a broadcast satellite only has one cell (the satellite) regardless of frequency, and for fixed links the penalty of frequency is much less because the dish size and directivity can compensate. But as an approximation it might be useful.<br /><br />William WebbAnonymoushttps://www.blogger.com/profile/02224922709959984738noreply@blogger.comtag:blogger.com,1999:blog-5688599.post-56888622396082316922022-04-21T12:53:37.154-07:002022-04-21T12:53:37.154-07:00Playing is mostly done by juveniles, so to identif...Playing is mostly done by juveniles, so to identify examples of orgregores at play, it's useful to start by identifying juvenile orgregores. They don't have biological life-cycles, so you can't define them by age. I think the distinguishing characteristic is that they are (expecting to be) supported by their parents - they aren't ready to strike out on their own. Most startups don't count, I think: they aren't big enough to count as orgregores rather than groups of people until after they are generating revenue, that is, all grown up.<br /><br />I'd propose state-supported monopolies as an example of juvenile orgregores. They are often cosily supported, and as such are able to waste resources with few immediate consequences. <br /><br />Following on from that, I'd propose Concorde as an example of two orgregores at play. Of course, there were plenty of serious reasons given, but it seems to hit all the criteria except for 4 (repeated activity). It definitely hits 1 (not for current survival), 5 (player is relaxed), and 2 (fun!)<br />Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-5688599.post-11353940846424144902021-04-02T03:59:32.688-07:002021-04-02T03:59:32.688-07:00Dear Pierre,
Is it possible to get a copy of the F...Dear Pierre,<br />Is it possible to get a copy of the FCC document on spectrum efficiency metrics ?. <br />On their website, it is impossible to download it.<br />I really appreciate<br />Thank in advance<br />Ahmed Boraud<br />ARCEP-Niger<br />ahmed.boraud@arcep.neAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-5688599.post-67826465990377106832020-05-20T12:13:24.311-07:002020-05-20T12:13:24.311-07:00I suspect that symbols / images / scenes are prima...I suspect that symbols / images / scenes are primary, and that mythic narratives (may) accrete over time. Some modern mythic scenes are:<br /><br />- A welfare queen buys caviar using food stamps<br />- Bill Hewlett and David Packard work in their garage<br />- Those you mention, particularly the serenading Italians and the scenes set in grocery stores.<br /><br />Any of these could be captured in a painting. Li Wenliang's story fits as a sequence of three (or more) paintings, in the style of the Stations of the Cross: being struck by inspiration in a clinic, being arrested, and finally dying. <br /><br />Narratives can grow detail over time: consider Disney retellings of folk tales, in which multiple characters are added to flesh out the story. Perhaps the mythic narratives around coronavirus - and around technology as a whole - haven't had time to grow from symbols into narratives.Susan Dnoreply@blogger.comtag:blogger.com,1999:blog-5688599.post-81903971401096460142018-08-27T10:42:32.707-07:002018-08-27T10:42:32.707-07:00There's a fundamental difference in the statis...There's a fundamental difference in the statistical support for DTV and cellular contours and MIMO-type transmitters. In the former, the statistical dimensions of time and location (and confidence, which is often ignored and assumed to take a median value) account for variations in propagation due to terrain, multi-path interference, and atmospheric conditions. In the latter case the statistical variation is chiefly due to the intentional variation of the transmitter (including the antenna) parameters. The location and time variability statistics are fairly well-behaved over a wide range of probabilities (say, 10%-90%) because the processes are random, but MIMO will almost certainly not be random. It's not clear to me how statistics over an area due to MIMO could be determined a priori...Bob@weller.orghttps://www.blogger.com/profile/05742979000075529356noreply@blogger.comtag:blogger.com,1999:blog-5688599.post-67709418098364355762014-03-04T10:58:20.032-08:002014-03-04T10:58:20.032-08:00Very interesting. You've laid out a vision of ...Very interesting. You've laid out a vision of making RF environment models better through increased computation, better propagation/terrain models, and more sensor data, then running the models continuously as a "mirror" of the real world. But you don't say precisely in what ways the models should be improved and why improvements of those types would matter. I suggest there may be 3 axes of RF model quality to consider.<br /><br />Accuracy – how big are the error bars in the RF model<br />Granularity – what is the smallest spatial and temporal unit in the model<br />Timeliness – is the model predictive, real-time (how much lag?), or post-facto (how much delay?)<br /><br />To justify and guide work on RF mirror worlds, we need to think about:<br /><br />1. What improvements in the model outputs would offer high value? For example, the granularity of the model directly controls the size of spectrum holes that could be exploited in a dynamic spectrum access scheme. Are there enough bands and users where dynamic spectrum access requires city-block granularity that development of a city-block granularity Mirror World is a priority?<br /><br />2. In what ways does a continuously running RF environment model (a "mirror world") offer higher value than one which is invoked on request?<br /><br />If you want to push forward in this area, I recommend you build a list of different applications for the RF mirror worlds – what could they do or be used for to provide benefits in the operation or development of RF systems – and categorize each one by its requirements for Accuracy, Granularity, Timeliness, and Continuity.<br /><br />John<br />John Chapin, DARPA RadioMap Program Managernoreply@blogger.comtag:blogger.com,1999:blog-5688599.post-65840622436756763642013-03-21T17:42:48.958-07:002013-03-21T17:42:48.958-07:00Value may or may not be proportional to bandwidth,...Value may or may not be proportional to bandwidth, depending (again) upon other factors. For example, for SCADA, once you have enough bandwidth to do your telemetry, more has no more value. And a wider channel with stricter OOBE (out-of-band emission) limits or lower power limits may be more constrained than a narrower channel without them. As in other things in life, it is not just size that matters.Brett Glassnoreply@blogger.comtag:blogger.com,1999:blog-5688599.post-82414201944441761652013-03-19T10:05:55.942-07:002013-03-19T10:05:55.942-07:00Brett is correct that many factors influence spect...Brett is correct that many factors influence spectrum value. However, by counting spectrum using just bandwidth as we do now, we have already posited a simple function: that value is proportional to bandwidth, regardless of frequency. <br /><br />Since simplification is unavoidable, the question for me is which is less inaccurate when we’re doing very rough and ready comparisons across a wide variety of bands and services: counting just bandwidth, or bandwidth normalized by frequency.<br />JP (Pierre) de Vrieshttps://www.blogger.com/profile/02311009024575927588noreply@blogger.comtag:blogger.com,1999:blog-5688599.post-43810910000633243712013-03-19T10:04:27.357-07:002013-03-19T10:04:27.357-07:00This comment has been removed by the author.JP (Pierre) de Vrieshttps://www.blogger.com/profile/02311009024575927588noreply@blogger.comtag:blogger.com,1999:blog-5688599.post-6975158882458878102013-03-18T20:00:27.252-07:002013-03-18T20:00:27.252-07:00The flaw in this model is that the value of spectr...The flaw in this model is that the value of spectrum is not linearly or logarithmically related to frequency. Factors that can affect it include hardware availability, channel width and distribution (paired channels which are separated by the right amount can actually be more valuable than a contiguous block), FCC power limits (which may be dictated by neighboring assignments), purpose (higher frequencies are MORE valuable for point-to-point links), etc. It's naive to posit a simple function.Brett Glassnoreply@blogger.comtag:blogger.com,1999:blog-5688599.post-76518786273790344732012-11-30T22:03:56.103-08:002012-11-30T22:03:56.103-08:00This is a very clear description of a complex issu...This is a very clear description of a complex issue. I now have new insight into this topic, in which I used to have a passing interest. I now realise how important it is that policymakers understands the issues. Thanks for this objective and simplified (but accurate) view.Charl vanderMerwenoreply@blogger.comtag:blogger.com,1999:blog-5688599.post-60427053371258245192012-05-30T18:09:11.881-07:002012-05-30T18:09:11.881-07:00Mitch Lazarus doesn't understand the relevant ...Mitch Lazarus doesn't understand the relevant rules here. The rules preventing interference by M-LMS licensees go back to 1995, as do the Part 15 safe harbor for the band.Harold Feldhttps://www.blogger.com/profile/04249663645984417420noreply@blogger.comtag:blogger.com,1999:blog-5688599.post-44784407645800744272012-05-30T18:07:16.160-07:002012-05-30T18:07:16.160-07:00Mitch's post fundamentally misconceives the ex...Mitch's post fundamentally misconceives the existing M-LMS rules. This isn't a "proposal." It's been a rule since 1995.Harold Feldhttps://www.blogger.com/profile/04249663645984417420noreply@blogger.comtag:blogger.com,1999:blog-5688599.post-10058848404561308812012-02-15T20:28:00.351-08:002012-02-15T20:28:00.351-08:00Another interesting / provocative view. For years...Another interesting / provocative view. For years I have maintained that there is a policy / decision making equivalent of what are called nega-watts in the energy business (http://en.wikipedia.org/wiki/Negawatt_power)- energy you gain by not using energy.<br />I think there are things called 'nega-decisions', non-decisions which usefully block stupid, mischevious or ill considered decisions that might be made in their place. Sounds a lot like your placebo?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-5688599.post-69793213154045529422011-12-16T19:40:14.153-08:002011-12-16T19:40:14.153-08:00Not sure I understand the question, Shafeen, so my...Not sure I understand the question, Shafeen, so my apologies if I'm going off on a tangent.<br /><br />The big change in wireless regulation in the last thirty years has been a shift away from operating conditions that specify the technology the operator (licensed or unlicensed) has to use. For example, compare the PCS and AWS cellular rules where you can use any technology (GSM, CDMA, etc.) with the requirement to implement a very specific technology stack as a TV licensee. So in that sense the FCC is much less specific about behavior (in engineering terms) than it used to be, and appropriately so.<br /><br />The standard perspective is still very much in terms of "spectrum holders", where spectrum is a chunk of something, rather than the way I think of it: the FCC authorizes the transmission of certain energy levels over certain frequencies in certain places. <br /><br />A spectrum chunk view lends itself to exclusive licensing, but is also common among people who think sharing is the future - they just think of carving up the chunks more finely.<br /><br />I believe a dynamic, behavioral view will lead to more concurrent operations than today, which should increase total social welfare - including increasing revenue.JP (Pierre) de Vrieshttps://www.blogger.com/profile/02311009024575927588noreply@blogger.comtag:blogger.com,1999:blog-5688599.post-57978265524733642402011-12-13T00:17:06.531-08:002011-12-13T00:17:06.531-08:00Fascinating! Thanks as always Pierre for provoking...Fascinating! Thanks as always Pierre for provoking possibilities. <br /><br />Do you feel that the FCC might now regulate/license capacity + behavior -- somewhat akin to net neutrality, where capacity owners are able to control behavior within their space?<br /><br />Or do you think that they might further subdivide the auctions into two separate acts - what are you licensed to do, and where are you licensed to do it? Do you think the licenses will be mutually exclusive? You can either own and resell capacity, or you can purchase and resell content/behavior/etc.?<br /><br />This could be a way for licensors to expand their revenue potential without changing the size of the pie??Shafeen Charaniahttp://www.synthesism.comnoreply@blogger.comtag:blogger.com,1999:blog-5688599.post-56699417566056868362011-10-28T04:24:27.129-07:002011-10-28T04:24:27.129-07:00This is useful because it is antitechnocratic. Spe...This is useful because it is antitechnocratic. Spectrum allocations that may be inefficient from a strictly engineering, economic or administrative standpoint may efficiently achieve public policy objectives. And spectrum-efficient services may make little meaningful contribution to the public at large, and should be revisited.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-5688599.post-39932223404142643232011-07-15T01:32:44.612-07:002011-07-15T01:32:44.612-07:00Nice article, thanks for the information.Nice article, thanks for the information.rental mobilhttp://griyamobilkita.webs.comnoreply@blogger.comtag:blogger.com,1999:blog-5688599.post-44518951848199670952011-04-09T09:37:24.347-07:002011-04-09T09:37:24.347-07:00Thanks Judith, that's fascinating. It's pr...Thanks Judith, that's fascinating. It's probably no coincidence, since my father was an Afrikaner, which I guess one could describe as African Dutch<br /><br />PierreJP (Pierre) de Vrieshttps://www.blogger.com/profile/02311009024575927588noreply@blogger.comtag:blogger.com,1999:blog-5688599.post-15395868781015222182011-04-08T19:53:35.905-07:002011-04-08T19:53:35.905-07:00Hi!
My grandmother was Pennsylvania Dutch, and she...Hi!<br />My grandmother was Pennsylvania Dutch, and she used to say that. <br />JudithAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-5688599.post-48844046694803322492011-02-04T10:08:40.053-08:002011-02-04T10:08:40.053-08:00Thanks, Johnny, that area is new to me; I'll f...Thanks, Johnny, that area is new to me; I'll follow up on your lead.JP (Pierre) de Vrieshttps://www.blogger.com/profile/02311009024575927588noreply@blogger.comtag:blogger.com,1999:blog-5688599.post-86679586003544884082011-02-03T19:08:25.747-08:002011-02-03T19:08:25.747-08:00As someone that thinks about media/communications ...As someone that thinks about media/communications I wonder if you are familiar with the field of biosemiotics – in my view it is basic to an understanding of the evolution of human communications and literacy. A fascinating field which I think maps to the question of how our minds are built to absrob and respond to signals and make the world we know.<br /><br />I found a great discussion of the history of the mind-body thing in Donald Favareau’s “Introduction: An Evolutionary History of Biosemiotics” <br /><br />A pdf source randomly googled up is:<br /><br />http://fredspdfs.posterous.com/favareau-2007-an-evolutionary-history-of-bios <br /><br />The site notes that “The first 20 pages are particularly good in tracing the pre-Cartesian history of the notions of mind-independent reality and the notion of signification from the Greeks, through especially the Scholastics, only to founder with the twin pronged agendas emanating from Bacon and Descartes.”<br /><br />From reading your blog over the last few years I think you might find an interesting few bread crumbs for the trail in this field of thought ...<br />blog abut it if you do ;)Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-5688599.post-17179611257584137752010-09-20T06:19:39.295-07:002010-09-20T06:19:39.295-07:00THANKS FOR SHARINGTHANKS FOR SHARINGpaul smithhttp://www.cbil360.com/Internet-marketing.htmlnoreply@blogger.comtag:blogger.com,1999:blog-5688599.post-87260379454255361372010-09-20T06:18:23.299-07:002010-09-20T06:18:23.299-07:00Thanks for the link to Kenneth Folk thread; very i...Thanks for the link to Kenneth Folk thread; very interestingpaul smithhttp://www.cbil360.com/creative-web-copyright.htmlnoreply@blogger.comtag:blogger.com,1999:blog-5688599.post-80403840070182193082010-06-12T11:32:10.094-07:002010-06-12T11:32:10.094-07:00It seems that what both of you are discussing is p...It seems that what both of you are discussing is pathways or roads between the preconscious and analytical thought. Are the mystical and the consilent part of the same process or are they different processes? Assuming they are part of the same path (the preconscious being a rapid synthesis of sensory, emotional, nonlinear inputs that give rise to image that then rise to the level of insight/inspiration), one area to explore are what are the tollgates on that road? For example, one difference that Pam brings up between artist vs. engineer may be in the filter or the acceptance of the input from the preconscious to the conscious. Here, trust may be one of the tollgates ["I recognize it but don't credit it"]. Asking what is trust and how is trust developed/blocked may (or may not) be a constructive question. Another tollgate might be receptiveness ["I don't recognize the message sent from the preconscious as a message"]- do some people have a greater ability to "convert" the preconscious input into the conscious? (The caveat on all this is I am a researcher/theologian and not an engineer; please forgive me if this pov is an oversimplification.)dorhttp://www.ddeasy.comnoreply@blogger.com