Patexia
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Patexia is running a prior art search contest in optical signaling with a $4000 prize. The contest involves finding sources describing a similar technique to - but published before - a patent on improved methods of modulating data for optical transmission.
In particular, we are interested in the feature referred to as “quadrature-return-to-zero,” a method of quadrature modulation, or modulating two signals onto two signal carriers. This method transmits two data signals (consisting of two distinct streams of data symbols, e.g. a series of -1 and +1) on adjacent carrier frequencies. By carefully selecting these carrier frequencies, the total transmitted power returns to zero at the same frequency as the data rate. As a result, the invention reduces the transmission power to zero between data symbols.
You can see more about the technique on the contest page here: https://www.patexia.com/contests/homodyne
For reference, a previous contest (https://www.patexia.com/charge-pump-circuit) was won by a graduate student at a top EE school.
We’re also offering a $500 prize for referring the winner through our site, so feel free to invite your colleagues if you know the right person.
In particular, we are interested in the feature referred to as “quadrature-return-to-zero,” a method of quadrature modulation, or modulating two signals onto two signal carriers. This method transmits two data signals (consisting of two distinct streams of data symbols, e.g. a series of -1 and +1) on adjacent carrier frequencies. By carefully selecting these carrier frequencies, the total transmitted power returns to zero at the same frequency as the data rate. As a result, the invention reduces the transmission power to zero between data symbols.
You can see more about the technique on the contest page here: https://www.patexia.com/contests/homodyne
For reference, a previous contest (https://www.patexia.com/charge-pump-circuit) was won by a graduate student at a top EE school.
We’re also offering a $500 prize for referring the winner through our site, so feel free to invite your colleagues if you know the right person.
