All Steve's points reflect my understanding as well. I do not believe it was intentionally designed to mess with other systems, especially since its initial design was made long before the presence of these systems in the marketplace (even though this was not introduced until 2002 as a commercial product, the design was in place almost a decade before I believe).
Patrick -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Steve Stroh Sent: Thursday, September 13, 2007 11:47 AM To: WISPA General List Subject: Re: [WISPA] Legal Charges used in Malicious Interference Situations I echo Mike's contention that Canopy was developed directly for use by Broadband Wireless Internet Access Service Providers... but not necessarily the small, highly entrepreneurial Wireless ISPs. In my discussions with some key Canopy personnel over the years, some of whom were remarkably candid, some interesting things came out: * Canopy was originally designed to take advantage of the burgeoning demand for Broadband Internet Access in ulta-high-density markets such as China. For a variety of reasons, that market never actually materialized, but Motorola (barely) decided to continue Canopy anyway * Canopy was almost killed several times. One manager "fell on his sword" and retired prematurely as a result of his forceful, but successful lobbying to let Canopy emerge as a product * Motorola was eventually surprised at how well Canopy was received by the market. For some time Canopy was kept "at arm's length" within Motorola, which during that time Motorola barely acknowledged that Canopy was actually a Motorola product. Even after Motorola grudgingly embraced Canopy as an "official" product, there was at least one very serious attempt to "shop the Canopy division around" to other BWIA vendors. I heard this from several vendors who Motorola approached. * Part of Motorola's reluctance to embrace Canopy is that it cannibalized some of Motorola's system integration work to build public safety Broadband Wireless systems - Motorola was horrified when some public safety agencies actually deployed Canopy systems themselves (no lucrative systems integration contract)... on the (talk about unintended consequences) "reputation" that Canopy was a Motorola product. * Canopy was designed for very large deployments by those not necessarily highly skilled in RF issues - hence the one-piece unit. If a service provider "followed the Canopy deployment instructions scrupulously, it almost always worked. * Motorola KNEW, well in advance, that there would eventually be more 5 GHz spectrum made available in the US - what's now called the 5.4 GHz band, thus spectral efficiency wasn't an overriding criteria in Canopy's original design. * Canopy's three design criteria were that it be simple to deploy, robust and reliable in operation, and cheap to manufacture and sell. Deep down, Canopy's modulation is (pretty much, kind of) FM, adapted for Broadband and Digital operation. (Yes, I know this is probably technically inaccurate and horribly oversimplified, but that's the way it was described as the genesis of Canopy's modulation scheme - it was based on the robustness of FM communicaitons, of which Motorola is a world class expert. * The 2.4 GHz and 902-928 MHz versions of Canopy were purely an afterthought, not part of the original plans for Canopy; both were developed only in response to large deployments who needed the frequency diversity and the penetration characteristics of 902-928 MHz. Thanks, Steve On 9/13/07, Mike Hammett <[EMAIL PROTECTED]> wrote: > Canopy was not initially developed for the military. It was built ground up > for WISPs. When it was designed, it was the best that there was, but > internal issues kept it from the market for a few years. During that time, > the market changed and Moto could no longer count on some of the things they > had when they designed it. > > > ----- > Mike Hammett > Intelligent Computing Solutions > http://www.ics-il.com -- Steve Stroh Editor / Analyst, Stroh Publications LLC 425-939-0076 | [EMAIL PROTECTED] | www.stevestroh.com ------------------------------------------------------------------------ -------- ** Join us at the WISPA Reception at 6:30 PM on October the 16th 2007 at ISPCON ** ** ISPCON Fall 2007 - October 16-18 - San Jose, CA www.ispcon.com ** ** THE INTERNET INDUSTRY EVENT ** ** FREE Exhibits and Events Pass available until August 31 ** ** Use Customer Code WSEMF7 when you register online at http://www.ispcon.com/register.php ** ------------------------------------------------------------------------ -------- WISPA Wants You! 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