Lara DolecekTalk Title: Finite-length spatial coupled codes: explicit constructions and applications in data storage


Spatially coupled (SC) codes have garnered significant attention due to their excellent performance and low-complexity decoding. In this work, we discuss finite-length constructions of spatially coupled (SC) codes for data storage applications, a domain that requires extremely high levels of error resiliency. We present a combinatorial approach for designing SC codes free of problematic objects, and demonstrate that this approach results in SC codes that significantly outperform the commonly used LDPC block codes.  We start by presenting the construction of a one-dimensional SC code and then show how so-called multi-dimensional SC codes can be constructed in a principled way, from these one-dimensional constituents. Our framework encompasses both binary and non-binary SC codes. We present code constructions and results for several relevant data storage channels including magnetic recording, channels with SNR variations, and Flash memories.




Lara Dolecek is an Associate Professor with the Electrical Engineering Department at the University of California, Los Angeles (UCLA). She holds a B.S. (with honors), M.S. and Ph.D. degrees in Electrical Engineering and Computer Sciences, as well as an M.A. degree in Statistics, all from the University of California, Berkeley. She received the 2007 David J. Sakrison Memorial Prize for the most outstanding doctoral research in the Department of Electrical Engineering and Computer Sciences at UC Berkeley. Prior to joining UCLA, she was a postdoctoral researcher with the Laboratory for Information and Decision Systems at the Massachusetts Institute of Technology. She received IBM Faculty Award (2014), Northrop Grumman Excellence in Teaching Award (2013), Intel Early Career Faculty Award (2013), University of California Faculty Development Award (2013), Okawa Research Grant (2013), NSF CAREER Award (2012), and Hellman Fellowship Award (2011). With her research group and collaborators, she received best paper awards from IEEE Data Storage Society in 2015, IEEE Globecom conference in 2015, two 2016 Best-of-Selse awards, ES Week Best Paper Award in 2017, and NVMW Memorable Paper Award in 2018. She currently serves as an Associate Editor for IEEE Transactions on Communications. Prof. Dolecek has served as a consultant for a number of companies specializing in data communications and storage.