Prof. Gordana Jovanovic Dolecek
Institute INAOE, Puebla, Mexico
Title: DESIGN OF DECIMATION FILTERS FOR SOFTWARE DEFINED RADIO (SDR)
Abstract:
Software Defined Radio or SDR is a radio communications system where several of the components typically implemented in hardware (mixers, filters, modulators/demodulators, detectors, etc.) are implemented in software, using a personal computer or other embedded computing devices. Although the concept of SDR is not new, the recent evolution of digital circuitry has made many of the processes possible from a practical point of view that long time ago were only possible from a theoretical point of view.
Decimation filters are necessary in the conversion of rate of signals in SDR to avoid aliasing. Since decimation filters work at high input rate it is necessary its simplicity and avoid multipliers.
We will revise existing methods for the decimation filter design based on Cascaded-Integrator-Comb (CIC) filters.
First, the methods for aliasing rejection improvement, based on exploring the characteristics of symmetrical polynomials are presented. In that way the alias rejection in comb folding bands can be increased in a simple way without introducing multipliers. In the following are presented the methods for comb passband droop compensation based on trigonometrically approach, in which the magnitude responses of compensators are in sinusoidal forms. The parameters of compensators are amplitudes of sinusoidal functions which depend on the number of the cascaded comb filters. The resulting compensators are nultiplierless and work at low rate and provide good comb compensation in a wide and narrow passband.
Biography:
Gordana Jovanovic Dolecek received a BSc and Ph.D. from the University of Sarajevo, Bosnia and Herzegovina, and an MSc degree from the University of Beograd, Serbia. She was a professor with the Faculty of Electrical Engineering, University of Sarajevo, from 1969 to 1993. From 1993 to 1995, she worked as a researcher at the Institute Mihajlo Pupin, Belgrade, Serbia. In 1995, she joined the Institute INAOE, Department for Electronics, Puebla, Mexico, where she works as a full professor. She was a visiting researcher with UCSB, Santa Barbara, USA, in 2001-2002, 2006, with SDSU San Diego, USA, in 2008-2009, and with UCLA, Los Angeles, USA, in 2015-2016.
She is the author/coauthor of over 80 journals and 400 conference papers. She is the author of the textbook G. Jovanovic Dolecek, “Random Signals and Processes Primer with MATLAB,” Springer NY: 2013, and editor of book G. Jovanovic Dolecek (Ed), ”Advances in Multirate Systems,” Springer, NY, 2017, and pioneer book G. Jovanovic Dolecek (Ed), “Multirate Systems: Design and Applications,” IGP, Hershey, USA, 2001.
She is a member of the Mexican Academy of Sciences, SNI of Mexico, and Life Senior Member, IEEE.
She was the Associate Editor for IEEE Transactions on Circuits and Systems-I: Regular Papers (2016-2023), IEEE Circuits and Systems Magazine (2022-2023), and IEEE Transactions on Circuits and Systems II: Express Brief (2016-2023).
She is the Senior Associate Editor for IEEE Transactions on Circuits and Systems-II: Express Brief, Associate Editor for IET Signal Processing, and a member of the Editorial Board for the journal Facta Universitatis, Series: Electronics and Energetics.
In 2024 she was a Track Chair for IEEE MWSCAS 2024 and organized a Special Session ¨Signal Processing for Wireless Communications.¨ She was a Guest Editor for the Special Issue “Advances of Wireless Communications Using Machine Learning and Deep Learning Techniques”, for MDPI Applied Science in 2023, Guest Editor with N. Cho for the Special Issue “Advances in Image Processing Using Machine Learning Techniques,” for IET Signal Processing, in 2022, one of the Guest Editors for Special Issue:” Digital Divide: Closing the Gap,” IEEE Communication Magazine, 2021, and one of the Guest Editors for Special Issue: “Advanced Techniques on Multirate Signal Processing for Digital Information Processing”, for IET Signal Processing, 2013.
Recognitions:
• In 2024 she received IEEE CAS John Choma Education Award for contributions in education in signal processing.
• In 2024 she received recognition as a Best Associate Editor of IEEE TCAS II journal for 2023.
• In 2023, she received recognition as a Best Associate Editor of IEEE TCAS I journal for 2022.
• In 2022, she was the recipient of the IEEE Mexico Puebla award for her achievement in electrical engineering, “Mujer en Ciencia” (“Women in Science”).
• In 2022, she received recognition as a Best Associate Editor of IEEE TCAS I journal for 2020-2021.
• In 2012, she received the Science and Technology Puebla State Award for her achievement in electronics.