martes, enero 24, 2023
InicioTechnologyHow MIT’s Muriel Medard Pioneered the Common Decoder

How MIT’s Muriel Medard Pioneered the Common Decoder


Community coding pioneer Muriel Médard calls herself a pathological optimist. The MIT electrical engineering and laptop science professor’s constructive pondering has led to new methods to enhance tried-and-true strategies within the discipline of data idea.

As the top of the community coding group on the college’s Analysis Laboratory for Electronics, the IEEE Fellow led a staff that created a silicon chip that eliminates the necessity for customized decoding {hardware} to identify sign errors. The chip makes use of a brand new algorithm the staff developed with Ken Duffy from Maynooth College: guessing random additive noise decoding (GRAND). Duffy is a professor and the director of the college’s Hamilton Institute.

“A number of different coding mechanisms are actually geared towards the worst-case [scenario]—which might be too pessimistic but in addition not vitality environment friendly and never time environment friendly,” Médard says.

Médard is that this 12 months’s recipient of the IEEE Koji Kobayashi Computer systems and Communications Award “for contributions to the speculation and follow of community coding, optical networks, and wi-fi communications.” NEC sponsors the award.

She says receiving the award, which acknowledges those that combine computer systems and communications, is “fairly wonderful” as a result of her work tends to be extra on the theoretical facet. She likes to mix totally different fields, she says, as a result of “there’s a richness and a set of actually cool issues you are able to do in between.”

“When you’ve seen sure kinds of strategies and sure methods of pondering [from other fields], you may’t unlearn them,” she says. “The award actually felt like a validation of this strategy that I’ve taken—not in a calculated, career-advancing approach however in an injudicious, overly optimistic approach.”


Médard says she didn’t know what she wished to be rising up. She favored engaged on artistic initiatives and arithmetic, so she determined to check math and literature at MIT. She had not been uncovered to engineering earlier than MIT, however she took a category and found her ardour.

“There have been many various fields the place I may see myself being joyful, however [engineering] is simply such an fascinating discipline,” she says. “It’s dynamic, and it presents so many artistic potentialities. It’s by no means boring.”

Médard earned all 5 of her levels at MIT: bachelor’s levels in electrical engineering and laptop science, arithmetic, and humanities, plus grasp’s and doctoral levels in EE.

After graduating, she joined the College of Illinois at Urbana–Champaign in 1998 as an assistant professor. She returned to MIT as a college member in 2000.

Elements of networking, community communications, and community computing—particularly coding methods—have been on the core of her work.

She holds greater than 50 U.S. and worldwide patents, most of which have been licensed or acquired.

She helped to discovered two corporations to commercialize a number of the coding methods she helped invent.

She is a advisor for Code On, an MIT spin-out in Cambridge, Mass., that was based by Médard and the opposite inventors of random linear community coding (RLNC). Amongst different issues, RLNC can assist velocity up the Web and enhance video high quality for streaming films and dwell occasions.

She is chief scientist at Steinwurf, the opposite firm she helped discovered. Primarily based in Aalborg, Denmark, Steinwurf gives correction merchandise utilizing RLNC. The know-how creates restore packets, which can be utilized to recreate misplaced information.


Médard’s GRAND chip is the results of a collaborative effort by MIT, Boston College, and Maynooth College. Along with decoding nearly any error-correcting codes, it will possibly decode ones that don’t but exist, Médard says.

Error correction can defend information despatched over the Web—together with e-mail, textual content messages, and pictures—from being broken by electromagnetic interference.

To handle information safety, Médard says, the standard strategy has been so as to add a code consisting of a sample of 1s and 0s to the sequence of transmitted indicators. These patterns are then used on the receiver to look at the sign for errors and attempt to reconstruct what was transmitted.

Every code is designed to correspond with a decoding algorithm that may be computationally advanced. The decoders use a codebook to attempt to decide what the transmitted data may be. Every codebook requires a separate chip or different piece of {hardware}.

The GRAND chip, which was designed in 40-nanometer CMOS know-how, eliminates the necessity for code-specific decoders and allows common decoding that quickly cycles by all believable noise patterns. The chip can course of a excessive quantity of knowledge with little lag time. The common decoder is anticipated to extend the effectivity of gadgets that course of excessive volumes of knowledge corresponding to augmented and virtual-reality gadgets, gaming methods, and 5G networks.

Médard says fixing the decoding drawback was a terrific instance of taking an issue that has been thought of because the inception of the sphere and fascinated by it in a unique, extra optimistic approach.

“The strategy we took was trying on the receiver facet,” she says. “GRAND decodes all of the codes you would possibly wish to put in there, together with codes that up till now had no decoder.”


Médard is an energetic IEEE volunteer. She served because the 2012 president of the IEEE Data Concept Society. Whereas a member of the society’s board of governors, she established a well-liked mentoring program to attach senior and junior researchers.

A former editor in chief of the IEEE Journal on Chosen Areas in Communications, final 12 months she grew to become editor in chief of the IEEE Transactions on Data Concept.

She has introduced at quite a few IEEE conferences, and lots of of her analysis articles can be found within the IEEE Xplore Digital Library.

She volunteers, she says, as a result of she believes an expert society is necessary to the engineering discipline.

“Having conferences at which we alternate data is vital,” she says. “That’s the place you current to your colleagues, you get suggestions, and also you solidify and confirm the validity of your work. The identical with the journals: They’re the archival repository of our collective progress.”

IEEE has a task to play past exchanging data, she says.

“That is how we’re exhibiting the world what we predict is worth it and is effective about our occupation,” she says. “That is a part of not simply getting recognition from colleagues but in addition a part of our messaging to the broader world. There’s a lot dialogue concerning the position and generally even the worth of know-how. It’s essential that as a occupation we’re in a position to articulate that worth in a compelling approach.”

From Your Website Articles

Associated Articles Across the Internet




Por favor ingrese su comentario!
Por favor ingrese su nombre aquí