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 Personal Information

Name: Mehdi
Surname: Bekrani
Contact Address: Faculty of Electrical and Computer Engineering, Qom University of Technology, Qom, Iran

Place of Birth: Gorgan, Iran

E-Mail: bekrani@gmail.com, bekrani@qut.ac.ir

Education 

  • 2004-2010,   Ph.D. in Electrical Engineering, Tarbiat Modares University, Tehran, Iran.

Field: Signal Processing.

Thesis Title: New Approaches for Improvement of the Performance of Adaptive Stereo Acoustic Echo Cancellers

Advisor: Prof. Mojtaba Lotfizad

  • 2001-2003,   M.Sc. in Electrical Engineering, Tarbiat Modares University, Tehran, Iran.

Field: Signal Processing.

Thesis Title: Investigation of Spectral Subtraction Method and Reducing Resultant Musical Noise 

Advisor: Prof. Mojtaba Lotfizad

  • 1997-2001,   B.Sc. in Electrical Engineering, Ferdowsi University of Mashhad, Mashhad, Iran.

Field: Electronics.

Thesis Title: Investigation of Picture-In-Picture (PIP) System in Digital Televisions

Advisor: Prof. Ali Bayat-Mokhtari  

Current Position 

Assistant Prof., Qom University of Technology, Qom, Iran

Research Interests

 Audio, Speech and Ultrasonic Signal Processing, including:

  • Beamforming
  • Equalization and Dereverberation
  • Echo and Feedback Cancellation
  • Speech Enhancement
  • Blind Source Separation
  • Active Noise Control
  • Ultrasonic Phased Arrays
  • Microphone Arrays
  • Acoustic Source Reconstruction
  • Soundfield Control
  • Adaptive Filtering 

Professional Experience

  1. Assistant Professor, Faculty of Electrical and Computer Engineering, Qom University of Technology, Feb. 2013-Present.
  2. Director of Telecommunications and Electronics Group, Qom University of Technology, Dec. 2019-Present.
  3. Lecturer, University of Science and Culture & Islamic Azad University, 2007-2019.
  4. Researcher, Niroo Research Institute, Jun. 2016 – Aug. 2018.
  5. Researcher, TP Electronics and Telecommunications Research Center, May 2013 - Aug. 2014,
  6. Post-doctoral Research Fellow, Nanyang Technological University, Singapore, Feb. 2011 - Dec. 2012.
  7. Visiting Researcher, Nanyang Technological University, Singapore, Mar. 2009 - Sep. 2009.
  8. Reviewer for the journals:
  • IEEE/ACM Transactions on Audio, Speech, and Language Processing
  • IEEE Transactions on Signal Processing
  • Multidimensional Systems and Signal Processing
  • Circuits, Systems and Signal Processing
  • Electronics Letters
  • International Journal of Electronics and Communications
  • Signal and Data Processing
  • Journal of Modeling in Engineering
  • Iranian Journal on Electrical and Computer Engineering
  • Journal of Iranian Association of Electrical and Electronics Engineers
  • Journal of Engineering Management and Soft Computing
  • Modeling and Simulation in Electrical and Electronics Engineering  

Teaching Experience

Undergraduate Courses:

  • Pulse Techniques
  • Electrical Circuits I
  • Electronics I, II
  • Filter and Synthesis
  • Digital Electronics
  • Signals and Systems
  • Digital Design
  • Electrical Measurement

Graduate Courses:

  • Adaptive Filters
  • Digital Signal Processing
  • Digital Image Processing
  • VLSI Circuit Design
  • CMOS Analog Integrated Circuit Design
  • Acoustic and Ultrasonic Signal Processing  

Laboratory Experience 

  • Pulse Techniques
  • Electrical Measurement
  • Electronics I & II
  • Digital Design
  • Communication Circuits

  Software and Programming Skills

                   IC Design and Simulation: HSpice, ADS

                  Circuit Design and Simulation: PSpice, Proteus

                  Programming Language: MATLAB, Python, C++

                  Other softwares: Latex, Office, Adobe Acrobat, Adobe Photoshop, etc.                

 Publications

Journal Papers:
[1] Bekrani, M., Khong, A. W. H., & Lotfizad, M. (2011). A clipping-based selective-tap adaptive filtering approach to stereophonic acoustic echo cancellation. IEEE Transactions on Audio, Speech, and Language Processing, 19(6), 1826–1836.

[2] Bekrani, M., Khong, A. W. H., & Lotfizad, M. (2010). Neural network based adaptive echo cancellation for stereophonic teleconferencing application. In 2010 IEEE International Conference on Multimedia and Expo (pp. 1172–1177).

[3] Bekrani, M., Khong, A. W. H., & Lotfizad, M. (2010). A clipping-based adaptive filtering approach for stereophonic acoustic echo cancellation. In 2010 IEEE International Conference on Acoustics, Speech and Signal Processing (pp. 337–340).

[4] Bekrani, M., & Lotfizad, M. (2008). A modified wavelet-domain adaptive filtering algorithm for stereophonic acoustic echo cancellation in the teleconferencing application. In 2008 International Symposium on Telecommunications (pp. 548–554).

[5] Bekrani, M., Lotfizad, M., & Khong, A. W. H. (2010). An efficient quasi LMS/Newton adaptive algorithm for stereophonic acoustic echo cancellation. In 2010 IEEE Asia Pacific Conference on Circuits and Systems (pp. 684–687).

[6] Bekrani, M., Khong, A. W. H., & Lotfizad, M. (2011). A linear neural network-based approach to stereophonic acoustic echo cancellation. IEEE Transactions on Audio, Speech, and Language Processing, 19(6), 1743–1753.

[7] Bekrani, M., & Khong, A. W. H. (2012). Convergence analysis of clipped input adaptive filters applied to system identification. In 2012 Conference Record of the Forty Sixth Asilomar Conference on Signals, Systems and Computers (ASILOMAR) (pp. 801–805).

[8] Bekrani, M., & Lotfizad, M. (2008). A wavelet thresholding approach for signal decorrelation in the stereophonic acoustic echo cancellation application. In 2008 9th International Conference on Signal Processing (pp. 2681–2684).

[9] Bekrani, M., Lotfizad, M., et al. (2010). Stereo acoustic echo cancellation using MIMO decorrelation network based NLMS adaptive filter. Iranian Journal of Electrical and Computer Engineering, vol. 8, no. 2, 2010, pp. 123-130.

[10] Bekrani, M., Sadoughi, Y. H., & Lotfizad, M. (2006). A modified multi-band spectral subtraction for speech enhancement. Iranian Journal of Electrical and Computer Engineering, vol. 4, no. 1, 2006, pp. 12-20.

[11] Bekrani, M., Khong, A. W. H., & Lotfizad, M. (2010). A new partial update NLMS for stereophonic acoustic echo cancellation. In 2010 18th European Signal Processing Conference (pp. 11–15).

[12] Bekrani, M., & Khong, A. W. H. (2014). Misalignment analysis and insights into the performance of clipped-input LMS with correlated Gaussian data. In 2014 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) (pp. 5929–5933).

[13] Bekrani, M., & Lotfizad, M. (2015). Clipped LMS/RLS adaptive algorithms: Analytical evaluation and performance comparison with low-complexity counterparts. Circuits, Systems, and Signal Processing, 34(5), 1655–1682.

[14] Bekrani, M. (2016). A weighted soft-max PNLMS algorithm for sparse system identification. International Journal of Information and Communication Technology Research (IJICTR), Vol. 8, No. 3, 2016, pp. 7-14.

[15] Bekrani, M., & Khong, A. W. H. (2017). A robust MINT equalization algorithm based on near-common zero concept. In 2017 Iranian Conference on Electrical Engineering (ICEE) (pp. 1685–1690).

[16] Bekrani, M., Bibak, R., & Lotfizad, M. (2019). Improved clipped affine projection adaptive algorithm. IET Signal Processing, 13(1), 103–111.

[17] Bekrani M, Hamiyati Vaghef V. An Improved Ultrasonic Imaging Method for Weld Inspection. Journal of Iranian Association of Electrical and Electronics Engineers 2020; 17 (1) :45-59.

[18] Behrooz, S. T., Bekrani, M., & Heydari, M. (2017). Fuzzy type-2 sliding mode control of matrix converter using indirect space vector modulation. In 2017 8th Power Electronics, Drive Systems & Technologies Conference (PEDSTC) (pp. 371–376).

[19] Bekrani, M., Heydari, M., & Behrooz, S. T. (2020). An adaptive control method based on interval fuzzy sliding mode for direct matrix converters. International Journal of Industrial Electronics Control and Optimization, 3(2), 159–171.

[20] Bekrani, M., & Lotfizad, M. (2009). A new method for stereophonic acoustic echo cancellation using a clipping-based structure for adaptive filtering. Journal of Iranian Association of Electrical and Electronics Engineers, 6(2), 25–39.

[21] Bekrani, M., & Khong, A. W. H. (2020). A delayless sub-band PNLMS adaptive filter for sparse channel identification. In 2020 28th Iranian Conference on Electrical Engineering (ICEE) (pp. 1–6).

[22] Salehi, N., Bekrani, M., Zayyani, H., et al. (2019). A fully differential ultra-wideband common-gate low-noise amplifier. Electronic Industries, 10(3), 43–58.

[23] Bekrani, M. (2019). Convergence performance improvement of affine projection adaptive algorithm for sparse linear system modeling with correlated input signals. Journal of Modeling in Engineering, 17(58), 171–186.

[24] Bekrani, M., Nguyen, A. H. T., & Khong, A. W. H. (2021). An adaptive non-linear process for under-determined virtual microphone beamforming. In ICASSP 2021—2021 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) (pp. 4495–4499).

[25] Bekrani, M. (2020). Phased array ultrasonic imaging using an improved beamforming based total focusing method for non destructive test. Journal of Welding Science and Technology of Iran, 6(1), 115–132.

[26] Bekrani, M., & Sadoghi Yazdi, H. (2006). A modified multi-band spectral subtraction for speech enhancement. Iranian Journal of Electrical and Computer Engineering, 7(1), 12-20.

[27] Bekrani, M. (2021). Design and analysis of an improved LMS/Newton adaptive algorithm for acoustic echo cancellation. Iranian Journal of Electrical and Computer Engineering, 80(2), 105-116.

[28] Rezaeizadeh, S., & Bekrani, M. (2023). Minimum variance beamforming based on covariance matrix reconstruction using orthogonal vectors. Journal of Engineering Management and Soft Computing, 9(1), 90–107.

[29] Bekrani, M., Taskhiri, M. M., & Asayesh, S. A. (2022). The presentation of a low noise UWB amplifier using an inverter with inductive peaking technique. Applied Electromagnetics, 10(1), 109–120.

[30] Hoseiniamin, F., Zayyani, H., Korki, M., & Bekrani, M. (2023). A low complexity proportionate generalized correntropy-based diffusion LMS algorithm with closed-form gain coefficients. IEEE Transactions on Circuits and Systems II: Express Briefs, 70(7), 2690–2694.

[31] Mohagheghian Bidgoli, Z., & Bekrani, M. (2024). A switching-based variable step-size PNLMS adaptive filter for sparse system identification. Circuits, Systems, and Signal Processing, 43(1), 568–592.

[32] Kavand, A., & Bekrani, M. (2024). Speckle noise removal in medical ultrasonic image using spatial filters and DnCNN. Multimedia Tools and Applications, 83(15), 45903–45920.

[33] Bekrani, M., & Zayyani, H. (2024). A variable step-size regularization-based quasi-Newton adaptive filter for system identification. IEEE Access, 12, 10059–10068.

[34] Bekrani M, Hamiyati Vaghef V. (2023). Ultrasonic Imaging based on Approximated Minimum Variance Beamforming and Its Application in Non-Destructive Test of Boiler Tubes. Journal of Iranian Association of Electrical and Electronics Engineers; 20 (3) :21-33

[35] Motie, S., Zayyani, H., Salman, M., & Bekrani, M. (2024). Self UAV localization using multiple base stations based on TDoA measurements. IEEE Wireless Communications Letters, 13(9), 2432–2436.

[36] Bekrani, M., & Sarshar, N. (2024). Adaptive acoustic beamforming with improved differential method. Iranian Journal of Electrical and Computer Engineering, 22(1), 54–60.

[37] Bekrani, M., Zayyani, H., Mohagheghian-Bidgoli, Z. (2024). Improved affine projection algorithms with selective projection order for channel identification. Signal, Image and Video Processing, 18(12), 8645–8657.

[38] Zayyani, H., Habibi, Z., Bekrani, M., & Salman, M. (2024). Multi-state Markovian-random walk adaptive filter for time-varying block sparse system identification. Digital Signal Processing, 155, Article 104742.

[39] Mohammadalinia, N., Zayyani H., Bekrani M. (2025). Improving Target Localization Using the Linear Least Squares Method and Received Signal Strength Under Path Loss Exponent Uncertainty. Journal of Iranian Association of Electrical and Electronics Engineers, 22 (4) :4-14.

[40] Ehsani, M., Bekrani, M., Garousi, S. (2024). Robust beamforming for ultrasonic imaging using wavelet-based thresholding and coherence weighting. International Journal of Industrial Electronics Control and Optimization, 7(4), 339–350.

[41] Nori, M., Bekrani, M. (2024). Quasi-floating gate MOSFET-based low power current mirror. Journal of Iranian Association of Electrical and Electronics Engineers, 21(1), 27–38.

[42] Labbaf, M., Bekrani, M., Fathollahi, M., & Taskhiri, M. M. (2025). High-efficiency quad-band RF energy harvesting system with improved cross-coupled differential-drive rectifier. Frequenz, 79(1–2), 29–39.

[43] Nasr-Esfahani, A., Bekrani, M., Rajabi, R. (2025). Robust Persian Digit Recognition in Noisy Environments Using Hybrid CNN-BiGRU Model. Journal of AI and Data Mining, 13(3), 337-345. doi: 10.22044/jadm.2025.15932.2707

[44] Bekrani, M., Zayyani, H. (2025). Affine projection LMS adaptive algorithm with variable smoothing of weight update matrix. Mathematics and Computational Sciences, 6(1), 89–103.

[45] Bekrani, M. (2024). Adaptive beamforming for improved ultrasonic imaging in noisy environments. Power, Control, and Data Processing Systems, 1(1), 40–49.

[46] Fazeli, N., Bekrani, M., & Fathollahi, M. (2025). Efficient CNFET-based ternary logic design with emphasis on half-adder and multiplier circuits. Integration, 104, Article 102441.

[47] Mohammadi, M., Zayyani, H., Bekrani, M. (2026). RSS localization in the presence of Byzantine attacks using MAP estimation. International Journal of Industrial Electronics Control and Optimization, 9(2), 173–181.

Books:

1. M. Bekrani, R. Rajabi, "Adaptive Filters, Fundamentals of Least Mean Squares with MATLAB", Translation, QUT Press, 2021.

2. M. Bekrani, V. H. Vaghef, "Phased Array Ultrasonic Imaging, Case Study: Weld Inspection of Boiler Tubes", Niroo Research Institute Press, 2022.