P. P. Vaidyanathan | |
---|---|
Nationality | Indian American |
Alma mater | University of California, Santa Barbara (PhD) Science College, University of Calcutta (BTech, MTech) |
Scientific career | |
Fields | Digital signal processing |
Institutions | California Institute of Technology (Caltech) |
Academic advisors | Sanjit K. Mitra |
Palghat P. Vaidyanathan (born in Kolkata, India on 16 October 1954) is the Kiyo and Eiko Tomiyasu Professor of Electrical Engineering at the California Institute of Technology, Pasadena, California, USA, where he teaches and leads research in the area of signal processing, especially digital signal processing (DSP), and its applications. He has authored four books, and authored or coauthored close to six hundred papers in various IEEE journals and conferences. Prof. Vaidyanathan received his B.Tech. and M.Tech. degrees from the Institute of Radiophysics and Electronics, Science College campus of University of Kolkata, and a Ph.D. degree in Electrical Engineering from University of California Santa Barbara in 1982.
Prof. Vaidyanathan's pioneering contributions include the development of the theory and structures for filter banks, [1] especially perfect reconstruction and orthonormal filter banks, which find applications in data compression standards such as JPEG and MPEG, and in digital communications. One of his early contributions is the development of the theory of robust digital filter structures directly in discrete time without recourse to classical circuit theoretical models. [2] He has also contributed widely in other areas of signal processing including image processing, [3] genomic signal processing, [4] sampling theory, [5] optimal transceivers, [6] radar signal processing, [7] and sensor array processing. [8] He has also explored the role of number theory in signal processing applications. [9]
Lawrence R. Rabiner is an electrical engineer working in the fields of digital signal processing and speech processing; in particular in digital signal processing for automatic speech recognition. He has worked on systems for AT&T Corporation for speech recognition.
Beamforming or spatial filtering is a signal processing technique used in sensor arrays for directional signal transmission or reception. This is achieved by combining elements in an antenna array in such a way that signals at particular angles experience constructive interference while others experience destructive interference. Beamforming can be used at both the transmitting and receiving ends in order to achieve spatial selectivity. The improvement compared with omnidirectional reception/transmission is known as the directivity of the array.
In signal processing, a filter bank 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 equalizer, which can attenuate the components differently and recombine them into a modified version of the original signal. The process of decomposition performed by the filter bank is called analysis ; the output of analysis is referred to as a subband signal with as many subbands as there are filters in the filter bank. The reconstruction process is called synthesis, meaning reconstitution of a complete signal resulting from the filtering process.
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In mathematics and statistical analysis, bicoherence is a squared normalised version of the bispectrum. The bicoherence takes values bounded between 0 and 1, which make it a convenient measure for quantifying the extent of phase coupling in a signal. The prefix bi- in bispectrum and bicoherence refers not to two time series xt, yt but rather to two frequencies of a single signal.
Precoding is a generalization of beamforming to support multi-stream transmission in multi-antenna wireless communications. In conventional single-stream beamforming, the same signal is emitted from each of the transmit antennas with appropriate weighting such that the signal power is maximized at the receiver output. When the receiver has multiple antennas, single-stream beamforming cannot simultaneously maximize the signal level at all of the receive antennas. In order to maximize the throughput in multiple receive antenna systems, multi-stream transmission is generally required.
Multi-user MIMO (MU-MIMO) is a set of multiple-input and multiple-output (MIMO) technologies for multipath wireless communication, in which multiple users or terminals, each radioing over one or more antennas, communicate with one another. In contrast, single-user MIMO (SU-MIMO) involves a single multi-antenna-equipped user or terminal communicating with precisely one other similarly equipped node. Analogous to how OFDMA adds multiple-access capability to OFDM in the cellular-communications realm, MU-MIMO adds multiple-user capability to MIMO in the wireless realm.
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Rangasami Lakshminarayan Kashyap was an Indian applied mathematician and a Professor of Electrical Engineering at Purdue University.
James Won-Ki Hong is Director of Innovation Center for Education, Co-Director of Center for Crypto Blockchain Research, and Professor of Dept. of Computer Science and Engineering at POSTECH. He served as Dean of Graduate of Information Technology at POSTECH from 2015 to 2019. He was Senior Executive Vice President and CTO of KT Corporation leading R&D activities from March 2012 to Feb. 2014. He received a Ph.D. degree from the University of Waterloo in 1991. His research interests include blockchain, network management, network monitoring and network analysis, ICT convergence, ubiquitous computing, and smartphonomics. He has served as Chair (2005–2009) of the IEEE Communications Society, Committee on Network Operations and Management. He has also served IEEE ComSoc Director of Online Content. He is Editor-in-Chief of International Journal on Network Management (IJNM) and of ComSoc Technology News. He is the Chair of Steering Committee of IEEE IFIP NOMS International Symposium on Integrated Network Management and Steering Committee member of APNOMS. He was General Chair of APNOMS 2006, and General Co-Chair of APNOMS 2008 and APNOMS 2011. He was General Co-Chair of IEEE/IFIP NOMS 2010. He is an editorial board member of Transactions on Network and Service Management, Journal of Network and Systems Management and Journal of Communications and Networks.
Ronald Robert Yager is an American researcher in computational intelligence, decision making under uncertainty and fuzzy logic. He is currently Director of the Machine Intelligence Institute and Professor of Information Systems at Iona College.
Peter (Petre) Stoica is a researcher and educator in the field of signal processing and its applications to radar/sonar, communications and bio-medicine. He is a professor of Signals and Systems Modeling at Uppsala University in Sweden, and a Member of the Royal Swedish Academy of Engineering Sciences, the United States National Academy of Engineering, the Romanian Academy, the European Academy of Sciences, and the Royal Society of Sciences in Uppsala. He is also a Fellow of IEEE, EURASIP, IETI, and the Royal Statistical Society.
In operations management and industrial engineering, production flow analysis refers to methods which share the following characteristics:
Georgios B. Giannakis 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.
Saraju Mohanty is an Indian-American professor of the Department of Computer Science and Engineering, and the director of the Smart Electronic Systems Laboratory, at the University of North Texas in Denton, Texas. Mohanty received a Glorious India Award – Rich and Famous NRIs of America in 2017 for his contributions to the discipline. Mohanty is a researcher in the areas of "smart electronics for smart cities/villages", "smart healthcare", "application-Specific things for efficient edge computing", and "methodologies for digital and mixed-signal hardware". He has made significant research contributions to security by design (SbD) for electronic systems, hardware-assisted security (HAS) and protection, high-level synthesis of digital signal processing (DSP) hardware, and mixed-signal integrated circuit computer-aided design and electronic design automation. Mohanty has been the editor-in-chief (EiC) of the IEEE Consumer Electronics Magazine during 2016-2021. He has held the Chair of the IEEE Computer Society's Technical Committee on Very Large Scale Integration during 2014-2018. He holds 4 US patents in the areas of his research, and has published 500 research articles and 5 books. He is ranked among top 2% faculty around the world in Computer Science and Engineering discipline as per the standardized citation metric adopted by the Public Library of Science Biology journal.
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Daniel W. Bliss is an American professor, engineer, and physicist. He is a Fellow of the IEEE and was awarded the IEEE Warren D. White award for outstanding technical advances in the art of radar engineering in 2021 for his contributions to MIMO radar, Multiple-Function Sensing and Communications Systems, and Novel Small-Scale Radar Applications. He is a professor in the School of Electrical, Computer and Energy Engineering at Arizona State University. He is also the director of the Center for Wireless Information Systems and Computational Architecture (WISCA).