Georgios B. Giannakis (born 27 February 1958) is a Greek-American Computer Scientist, engineer and inventor. He has been an Endowed Chair Professor of Wireless Telecommunications, he was Director of the Digital Technology Center, and at present he is a McKnight Presidential Chair with the Department of Electrical and Computer Engineering at the

University of Minnesota The University of Minnesota Twin Cities (historically known as University of Minnesota) is a public university, public Land-grant university, land-grant research university in the Minneapolis–Saint Paul, Twin Cities of Minneapolis and Saint ...

. Giannakis is internationally known for his work in the areas of

statistical signal processing Signal processing is an electrical engineering subfield that focuses on analyzing, modifying and synthesizing ''signals'', such as sound, images, potential fields, seismic signals, altimetry processing, and scientific measurements. Signal ...

, distributed estimation using

sensor networks Wireless sensor networks (WSNs) refer to networks of spatially dispersed and dedicated sensors that monitor and record the physical conditions of the environment and forward the collected data to a central location. WSNs can measure environmental ...

wireless communications Wireless communication (or just wireless, when the context allows) is the transfer of information (''telecommunication'') between two or more points without the use of an electrical conductor, optical fiber or other continuous guided mediu ...

and cross-layer network designs, on topics such as auto-regressive moving average system identification using

higher-order statistics In statistics, the term higher-order statistics (HOS) refers to functions which use the third or higher power of a sample, as opposed to more conventional techniques of lower-order statistics, which use constant, linear, and quadratic terms (zero ...

, principal component

filter bank In signal processing, a filter bank (or filterbank) is an array of bandpass filters that separates the input signal into multiple components, each one carrying a sub-band of the original signal. One application of a filter bank is a graphic equal ...

s, linear precoding, multicarrier modulation,

ultra-wideband Ultra-wideband (UWB, ultra wideband, ultra-wide band and ultraband) is a radio technology that can use a very low energy level for short-range, high-bandwidth communications over a large portion of the radio spectrum. UWB has traditional applicat ...

communications,

cognitive radio A cognitive radio (CR) is a radio that can be programmed and configured dynamically to use the best channels in its vicinity to avoid user interference and congestion. Such a radio automatically detects available channels, then accordingly change ...

s, and

smart grid The smart grid is an enhancement of the 20th century electrical grid, using two-way communications and distributed so-called intelligent devices. Two-way flows of electricity and information could improve the delivery network. Research is main ...

s. Seminal work includes the development of linear precoding wireless communication systems, which provided a unified approach for designing

space–time block code Space–time block coding is a technique used in wireless, wireless communications to transmit multiple copies of a data stream across a number of Antenna (radio), antennas and to exploit the various received versions of the data to improve the r ...

s that achieve data high rates and reliability, and proposal of zero-padding as an alternative to the

cyclic prefix In telecommunications, the term cyclic prefix refers to the prefixing of a symbol with a repetition of the end. The receiver is typically configured to discard the cyclic prefix samples, but the cyclic prefix serves two purposes: * It provides a gu ...

for multi-carrier communication systems, which had impact in the multi-band ultra wide band standard. Current research focuses on

big data Big data primarily refers to data sets that are too large or complex to be dealt with by traditional data processing, data-processing application software, software. Data with many entries (rows) offer greater statistical power, while data with ...

, graph learning, and

network science Network science is an academic field which studies complex networks such as telecommunication networks, computer networks, biological networks, Cognitive network, cognitive and semantic networks, and social networks, considering distinct eleme ...

with applications to social, brain and power networks with

renewables Renewable energy (also called green energy) is energy made from renewable natural resources that are replenished on a human timescale. The most widely used renewable energy types are solar energy, wind power, and hydropower. Bioenergy and ...

. Giannakis has left a substantial academic legacy as an advisor of more than 59 Ph.D. dissertations and mentor of more than 27

postdoctoral researcher A postdoctoral fellow, postdoctoral researcher, or simply postdoc, is a person professionally conducting research after the completion of their doctoral studies (typically a PhD). Postdocs most commonly, but not always, have a temporary acade ...

s at the

University of Virginia The University of Virginia (UVA) is a Public university#United States, public research university in Charlottesville, Virginia, United States. It was founded in 1819 by Thomas Jefferson and contains his The Lawn, Academical Village, a World H ...

and the

Early life

Born in

Piraeus Piraeus ( ; ; , Ancient: , Katharevousa: ) is a port city within the Athens urban area ("Greater Athens"), in the Attica region of Greece. It is located southwest of Athens city centre along the east coast of the Saronic Gulf in the Ath ...

and raised in

Corinth Corinth ( ; , ) is a municipality in Corinthia in Greece. The successor to the ancient Corinth, ancient city of Corinth, it is a former municipality in Corinthia, Peloponnese (region), Peloponnese, which is located in south-central Greece. Sin ...

, Greece, Giannakis received his MEng in Electrical and Mechanical Engineering from the

National Technical University of Athens The National (Metsovian) Technical University of Athens (NTUA; , ''National Metsovian Polytechnic''), sometimes known as Athens Polytechnic, a university in Athens, Greece. It is named in honor of its benefactors Nikolaos Stournaris, Eleni Tosi ...

in 1981, his M.Sc. in electrical engineering from the

University of Southern California The University of Southern California (USC, SC, or Southern Cal) is a Private university, private research university in Los Angeles, California, United States. Founded in 1880 by Robert M. Widney, it is the oldest private research university in ...

in 1983, his M.Sc. in mathematics from the

in 1986, and his PhD in Electrical Engineering from the

also in 1986.Georgios B. Giannakis
degrees at umn.edu. Accessed September 5, 2013 After completing his Ph.D., he started his academic career at the

in 1987 and moved to the

in 1999. As a professor, he built a distinguished research group making contributions in many areas including

, sensor and mobile ad hoc networks and

data analytics Analytics is the systematic computational analysis of data or statistics. It is used for the discovery, interpretation, and communication of meaningful patterns in data, which also falls under and directly relates to the umbrella term, data sci ...

Awards and honors

In 2023, Giannakis became an International Fellow of UK's

Royal Academy of Engineering The Royal Academy of Engineering (RAEng) is the United Kingdom's national academy of engineering. The Academy was founded in June 1976 as the Fellowship of Engineering with support from Prince Philip, Duke of Edinburgh, who became the first senio ...

, and received the IEEE Women in Communications Engineering (WICE) Outstanding Mentorship Award. In 2022, he received the Distinguished Alumni Award from the Signal and Image Processing Institute at the University of Southern California; and the Faculty Award for Excellence in Postdoctoral Advising at the University of Minnesota. In 2021, Giannakis became a corresponding member of the Academy of Athens, Greece. In 2020, he was inducted as International Member of

Academia Europaea The Academia Europaea is a pan-European Academy of humanities, letters, law, and sciences. The Academia was founded in 1988 as a functioning Europe-wide Academy that encompasses all fields of scholarly inquiry. It acts as co-ordinator of Europe ...

. In the same year, he won the

European Association for Signal Processing The European Association for Signal Processing (EURASIP) is an international scientific society for the theory and application of signal processing. It was established on the 1st of September 1978. It hosts the European Signal Processing Conference ...

(

EURASIP The European Association for Signal Processing (EURASIP) is an international scientific society for the theory and application of signal processing. It was established on the 1st of September 1978. It hosts the European Signal Processing Conference ...

) "Athanasios Papoulis," Society Award, and was elected Fellow of the

European Academy of Sciences European, or Europeans, may refer to: In general * ''European'', an adjective referring to something of, from, or related to Europe ** Ethnic groups in Europe ** Demographics of Europe ** European cuisine, the cuisines of Europe and other West ...

. In 2019, he was the winner of the Institute for Electrical and Electronics Engineers (

IEEE The Institute of Electrical and Electronics Engineers (IEEE) is an American 501(c)(3) organization, 501(c)(3) public charity professional organization for electrical engineering, electronics engineering, and other related disciplines. The IEEE ...

) Signal Processing "Norbert Wiener" Society Award; he was also named Fellow of the US

National Academy of Inventors The National Academy of Inventors (NAI) is a US non-profit organization dedicated to encouraging inventors in academia, following the model of the National Academies of the United States. It was founded at the University of South Florida in 201 ...

(

NAI Nai or NAI may refer to: Music * ''Nai'' (album), an album by singer Anna Vissi * Nai (pan flute), a wind instrument, also known as a pan flute (Romania and Moldova) * "Nai" (song), a 2007 CD single by Irini Merkouri Organizations * NASA Astro ...

); and won the IEEE Communications Society Education Award. In 2018, he received honorary doctorate degrees from the University of Patras, and the University of Peloponnese, Greece. In 2016, Giannakis was appointed to the prestigious McKnight Presidential Endowed Chair at the University of Minnesota.; and from 2001 to 2008 he held the Endowed Chair in Wireless Telecommunications at the U. of Minnesota. In 2015, Giannakis became the inaugural recipient of the IEEE Technical Field Fourier Award for Signal Processing. From 2012 to 2017, he served as member of the Board of Regents,

University of Patras The University of Patras (UPatras; , ''Panepistímio Patrón'', ΠΠ) is a public university in Patras, Greece. It is the third-largest university in Greece with respect to the size of the student body, the staff, and the number of department ...

, Greece. In 2008, Giannakis became Fellow of

, and in 2005 he received EURASIP's Technical Achievement Award. Earlier in 1997, he became

Fellow of the IEEE A fellow is a title and form of address for distinguished, learned, or skilled individuals in academia, medicine, research, and industry. The exact meaning of the term differs in each field. In learned or professional societies, the term refers ...

, and in 2000 he received the Technical Achievement Award from the

IEEE Signal Processing Society The IEEE Signal Processing Society (IEEE SPS) is one of the nearly 40 technical societies of the Institute of Electrical and Electronics Engineers (IEEE) and the first one created. Its mission is to "advance and disseminate state-of-the-art scie ...

. Giannakis is listed in the top 20 of '' ISI’s Highly Cited Researchers in ECE and Computer Science.'' His publications have received more than 96,000 citations with h-index=166. In Thomson Reuters "World’s Most Influential Scientific Minds" he ranks at the top 300 from all fields of Engineering, Informatics, and Computer Science. Giannakis is also a co-author of eleven best journal paper awards including the IEEE Communications Society'
Gugliermo Marconi Prize Paper Award
for work on linear precoding, the 2003 IEEE Signal Processing Society's SP Magazine Best Paper Award for a paper on wireless multicarrier communication, an IEEE Signal Processing Society'
Best Paper Award
in 2001 for work on parallel factor analysis in sensor array processing, an IEEE Signal Processing Society'
Best Paper Award
2000 for work on designing filterbank precoders and equalizers.

Invention and commercialization

Giannakis has 36 US and foreign patents issued in the fields of wireless communications (several related to the 4G LTE standard), cognitive radio sensing, signal processing, power system monitoring, and photovoltaic inverters in residential power distribution. Through those he became a fellow of the US National Academy of Inventors, `…the highest professional distinction accorded to academic inventors who have demonstrated a prolific spirit of innovation…’ Giannakis’ standard essential patents for LTE and 5G were at the center of a litigation brought by the U. of Minnesota, which recently settled favorably with licensing.

Selected books and book chapters

* G. B. Giannakis, Y. Hua, P. Stoica, L. Tong, Editors, Signal Processing Advances in Wireless and Mobile Communications, Vol. 1: Trends in Channel Est. and Equalization, Prentice Hall, 2000. * G. B. Giannakis, Y. Hua, P. Stoica, L. Tong, Editors, Signal Processing Advances in Wireless and Mobile Communications, Vol. 2: Trends in Single- and Multi-User Systems, Prentice Hall, Inc., 2000. * G. B. Giannakis, Z. Liu, X. Ma, and S. Zhou, Space-Time Coding for Broadband Wireless Communications, John Wiley & Sons, Inc., 2007. * V. Kekatos, G. Wang, H. Zhu, and G. B. Giannakis, "PSSE redux: Convex relaxation, decentralized, robust, and dynamic approaches", Chapter in Advances in Electric Power and Energy; M. El-Hawary Editor, 2018. * G. Mateos and G. B. Giannakis, "Robust PCA by controlling sparsity in model residuals", Chapter in T. Bouwmans, E. Zahzah, and N. Aybat, Editors, CRC Press, 2017. * G. B. Giannakis, G. Mateos, I. D. Schizas, H. Zhu, and Q. Ling, "Decentralized learning for wireless communications and networking", Chapter in Splitting Methods... by R. Glowinski, S. Osher, and W. Yin, Editors, NY, Springer, 2016. * X. Ma and G. B. Giannakis, "Communicating over Wireless Doubly-Selective Channels", Chapter in Space-Time Wireless..., H. Boelcskei, D. Gesbert, C.B. Papadias and A.-J. van der Veen Eds., Cambridge U. Press, 2006. * Z. Tian, T. Davidson, X. Luo, X. Wu and G. B. Giannakis, "Ultra-Wideband Pulse-Shaper Design", Chapter in UWB Wireless Communications, H. Arslan and Y. Chen, Wiley 2005. * G. B. Giannakis, "Statistical Signal Processing", Chapter in DSP, V. K. Madisetti, D. Williams, Editors-in-Chief, CRC Press, 1998. * G. B. Giannakis, "Trends in Spectral Analysis: Higher-Order and Cyclic Statistics", Chapter in Digital Signal Proc. Tech., P. Papamichalis and R. Kerwin, Eds., pp. 74–97, vol. CR57, 1995.

Selected publications

* S. Gezici, Z. Tian, G. B. Giannakis, H. Kobayashi, A. V. Molisch, H. V. Poor and Z. Sahinoglu, "Localization via Ultra-Wideband Radios", ''IEEE Signal Processing Magazine'', vol. 22, no. 4, pp. 70–84, July 2005. * L. Yang, and G. B. Giannakis, "Ultra-Wideband Communications: An Idea whose Time has Come", ''IEEE Signal Processing Magazine'', vol. 21, no. 6, pp. 26–54, November 2004. * Q. Liu, S. Zhou, and G. B. Giannakis, "Cross-Layer Combining of Adaptive Modulation and Coding with Truncated ARQ over Wireless Links", ''IEEE Trans. on Wireless Communications'', vol. 3, no. 5, pp. 1746–1755, September 2004. * Z. Wang, and G. B. Giannakis, "A Simple and General Parameterization Quantifying Performance in Fading Channels", ''IEEE Transactions on Communications'', vol. 51, no. 8, pp. 1389–1398, August 2003. * P. Xia, and G. B. Giannakis, "Design and Analysis of Transmit-Beamforming based on Limited-Rate Feedback", ''IEEE Transactions on Signal Processing,'' vol. 54, no. 5, pp. 1853–1863, May 2006. * G. B. Giannakis, P. Anghel and Z. Wang, "Generalized Multi-Carrier CDMA: Unification and Equalization", ''EURASIP Journal of Applied Signal Processing'', pp. 743–756, February 2005. * Y. Xin, Z. Wang, and G. B. Giannakis, "Space-Time Diversity Systems based on Linear Constellation Precoding", ''IEEE Transactions on Wireless Communications'', vol. 2, no. 2, pp. 294–309, March 2003. * N. D. Sidiropoulos, R. Bro, and G. B. Giannakis, "Parallel Factor Analysis in Sensor Array Processing", ''IEEE Transactions on Signal Processing'', vol. 48, pp. 2377–2388, August 2000. * Z. Wang and G. B. Giannakis, "Wireless Multicarrier Communications: Where Fourier Meets Shannon", ''IEEE Signal Processing Magazine'', vol. 17, pp. 29–48, May 2000. * A. Scaglione, G. B. Giannakis, and S. Barbarossa, "Redundant Filterbank Precoders and Equalizers Part I: Unification and Optimal Designs", ''IEEE Transactions on Signal Processing'', vol. 47, pp. 1988– 2006, July 1999. * M. K. Tsatsanis and G. B. Giannakis, "Principal component filter banks for optimal multiresolution analysis", ''IEEE Transactions on Signal Processing'', vol. 43, pp. 1766–1777, August 1995. * G. B. Giannakis and J. M. Mendel, "Identification of non-minimum phase systems using higher-order statistics", ''IEEE Transactions on Acoustics Speech and Signal Processing'', vol. 37, pp. 360–377, March 1989.

Selected patents

* G. B. Giannakis, and X. Ma, "Estimating Frequency-offsets and Multi-antenna Channels in MIMO-OFDM Systems", US Patent no. US 10,700,800 B2; issued June 30, 2020; impacted LTE (3GPP Tech. Spec.36.211, Sec.6.10). * S. Dhople, G. B. Giannakis, and E. Dall’Anese, "Decentralized Optimal Dispatch of Photovoltaic Inverters in Power Distribution Systems", US Patent no. 10,139,800 B2, issued Nov. 27, 2018. * G. B. Giannakis, and H. Zhu, "State Estimation of Electrical Power Networks using Semidefinite Relaxation", US Patent no. 9,863,985, issued January 9, 2018. * G. B. Giannakis, E. Dall'Anese, J. A. Bazerque, H. Zhu, and G. Mateos, "Robust Parametric Power Spectrum Density Map Construction", US Patent no. 9,363,679, issued June 7, 2016; RF maps for wireless cognitive radios. * G. B. Giannakis, G. Mateos, and J. A. Bazerque, "Non-parametric Power Spectral Density Map Construction", US Patent no. 9,191,831, issued November 17, 2015. * G. B. Giannakis, Y. Xin, and Z. Wang, "Wireless communication system having linear encoder", US Patent no. RE45,230, issued Nov. 4, 2014; complex-field codes that combat fading effects to ensure fast-reliable wireless links. * G. B. Giannakis, P. Xia and S. Zhou, "Bandwidth- and Power-Efficient Multi-Carrier Multiple Access for Uplink Broadband Wireless Communications", US Patent no. 7,672,384, issued March 2, 2010.

References

{{DEFAULTSORT:Giannakis, Georgios B. 1958 births Living people American computer scientists Greek computer scientists University of Minnesota faculty People from Corinth