Spectrum Scarcity Is Myth, but How Spectrum Is Used Must Change: Cooper
Martin Cooper, known as the inventor of the cellphone as a Motorola technologist, is a skeptic of wireless industry arguments about a pending spectrum crisis. The world “is just at the beginning of the cellular revolution,” he said on a…
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Cooley webinar Thursday, interviewed by former FCC Commissioner Robert McDowell. The standard story is that spectrum “is like beachfront property -- when you use it all up, there isn’t anymore,” Cooper said. “How can that be true?” When Guglielmo Marconi demonstrated the first radio, he used all the available spectrum for most of the world, Cooper said. Fifty years later “we had a million times more capacity, and believe it or not, another 50 years” later “and we did another million times,” he said: “Somehow or other, technology has stayed ahead of the game forever, and we have never had a scarcity of spectrum.” The technology already exists to make much more efficient use of spectrum, he said. The challenge “is to change our perception of spectrum, to get people to understand that we’ve got to … share the spectrum,” he said. McDowell noted Cooper developed what some call “Cooper’s Law,” that spectral efficiency doubles every 30 months and becomes exponential over time. Cooper’s wife, Arlene Harris, who co-founded wireless technology company Dyna with him in 1986, said on the webinar the expiration of the FCC’s auction authority in March could be a good thing for the wireless industry. “Good for Congress -- let’s starve the carriers,” Harris said. The carriers will then have to put pressure on their suppliers to develop technological solutions to capacity issues, she said. The technology Cooper developed in the 1990s “would have improved [network] capacity a ton, and yet the commission goes off and sells more spectrum -- the carriers had no reason to implement that technology,” Harris said: “They were buying spectrum and parking it.” Cooper envisions a world without exclusive licenses for spectrum. Allocations would be done “on the fly,” he said. Someone who wants to make a call would ask for a channel “and that channel is created instantaneously over the optimum frequency, the optimum amount of power,” he said: “We reconfigure as things change. That is the way systems should work. We are a long way away from that today, but that is how we’re going to get another million times capacity in spectrum capacity, and it’s all doable” with the right processing, smart antennas and other technology. The government is going to have to convince carriers to share spectrum, which won’t be easy, he said. “Carriers today think they own the spectrum -- they don’t own the spectrum, they have a license to use it,” Cooper said.