The decimation filters are important to eliminate aliasing in many areas, such as wireless communications, software-defined radio, oversampled analog-digital converters, instrumentation, hearing aids, etc. The comb filter is the simplest decimation filter. However, its aliasing rejection is low. Chebyshev sharpening of combs significantly increases the aliasing rejection. However, this process increases the passband droop, which may deteriorate the decimated signal. As a consequence, it is very important to compensate for the passband droop in the Chebyshev sharpened comb decimation filters. 

In this talk we present the design of optimal and multiplierless compensators for Chebyshev sharpened comb decimation filters. The narrowband and wideband compensators are elaborated. For the narrowband, the compensator with a magnitude response is proposed in a sinusoidal form, while for the wideband, two compensators with magnitude responses of two sinusoidal functions are introduced. The optimum design is performed using particle swarm optimization (PSO), while the multiplierless design is realized by presenting optimum parameters in a signed-power-of-two (SPT) form. Unlike methods in the literature, this approach presents flexibility in design, allowing for an exchange between the quality of optimization and the complexity. Comparisons with the compensators from the literature demonstrated that the presented method provides much better compensation while requiring fewer or slightly increased number of adders. Possible practical applications and potential future research work are also included.

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.

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 a prestigious IEEE CASS John Choma educational award.
• 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.