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Tech Review reports an "impossible" development, https://www.technologyreview.com/lists/innovators-under-35/2016/inventor/dinesh-bharadia/
Because the signal from broadcasting a radio transmission can be 100 billion times louder than the receiving one, it was always assumed that outgoing signals would invariably drown out incoming ones. That's why radios typically send and receive on different frequencies or rapidly alternate between transmitting and receiving. "Even textbooks kind of assumed it was impossible," Bharadia says.
Bharadia developed hardware and software that selectively cancel the far louder outgoing transmission so that a radio can decipher the incoming message. The creation of the first full-duplex radio, which eventually could be incorporated into cell phones, should effectively double available wireless bandwidth by simply using it twice.
Any bets on when this will make it to production, maybe as part of 7G(eneration) wireless? Or will the technology go black, used first by military?
And, does a person's name ever influence their career? "Bharadia" sounds awfully close to "bi-radio"...
(Score: 2, Interesting) by Anonymous Coward on Thursday September 22 2016, @01:57PM
The real problems are twofold: at what significant power level will the transmit power will end up desensing the receiver. It doesn't matter that one hits a magic formula, the question is still a basic one of how much power can be shoved out before the densense will occur. (And, improperly done, can end up permanently damaging a receiver's sensitivity.) But is the power level sufficient for whatever purpose one has in mind... I can see some kind of combination of echo suppression and data frequency handshaking (host uses one set of tones, client uses different frequencies) which would allow this.
The second problem.... The traditional method of solving this is a frequency shift between transmitter and receiver of enough bandspace and at frequencies that do not pick up any unsupressable natural harmonics - commercial and amateur repeaters have been doing this for decades. That, though, requires a duplexer. You know, like your phone already has in order to enable two-way communication? (And data-side, like Modems have had for decades?) So what problems does this idea really solve that traditional duplexing hasn't? Why is it that desirable to have the duplex occur on a single frequency?
The final problem... this is apparently a promo piece about how the person has dropped out to make their own startup. Come back when he's been successful at that, for until it is applied (and applied successfully) it is still just theory, or a solution in search of a problem.