Ten-4. Back to you. Over. On a radio or over the TV airwaves, speakers have to rely on back-and-forth communications because radio traffic only flows in one direction at a time on a frequency. Or so said scientific conventional wisdom, until Stanford researchers developed so-called “full duplex” radios that can send and receive signals at the same time. Twice as fast as existing radio devices, the new technology promises less congested, more efficient networks. “Textbooks say you can’t do it,” said the technology’s principal investigator Philip Levis, assistant professor of computer science and of electrical engineering at Stanford.
