University of Malawi

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Dr. Steven Charles Wandale

SENIOR LECTURER
Physics and Electronics

Research Areas

Research interests include (i) signal processing (array, image and acoustics), (ii) wireless communications (ii) optimization, and (iv) machine learning (ML) algorithms for signal processing.,

Profile

Dr. Steven Wandale is a lecturer in Electronics at the University of Malawi, School of Natural and Applied Sciences. He received his Master's and Doctor of Engineering degrees at Yokohama National University, Japan, in 2020 and 2023, respectively. His research interests include signal processing (array, image, and acoustics), wireless communications, optimization, and artificial intelligence/machine learning (AI/ML) algorithms for signal processing.

Publications

  • Journal Article
    S. Wandale and K. Ichige, "A Generalized Extended Nested Array Design via Maximum Inter-Element Spacing Criterion," in IEEE Signal Processing Letters, vol. 30, pp. 31-35, 2023, doi: 10.1109/LSP.2023.3238912. (2023)
    https://ieeexplore.ieee.org/abstract/document/10024398
  • Journal Article
    T. Kosaka, S. Wandale and K. Ichige, "RSSI-based indoor localization using two-step XGBoost," in IEICE Communications Express, doi: 10.23919/comex.2023XBL0123. (2023)
    DOI: 10.23919/comex.2023XBL0123
  • Journal Article
    S. Wandale and K. Ichige, "xMISC: Improved Sparse Linear Array via Maximum Inter-Element Spacing Concept," in IEEE Signal Processing Letters, vol. 30, pp. 1327-1331, 2023, doi: 10.1109/LSP.2023.3316018. (2023)
    doi: 10.1109/LSP.2023.3316018.
  • Conference Papers
    S. Obata, S. Wandale, and K. Ichige,"Underdetermined DOA Estimation of Correlated Signals Using Atomic Norm Minimization," IEICE Tech. Rep., vol. 122, no. 356, SIP2022-101, pp. 120-125, Jan. 2023. (2023)
  • Conference Papers
    S. Wandale and K. Ichige, “xMISC: A novel sparse linear array via maximum interelement spacing principle for DOA estimation,” IEICE Tech. Report, no. B-1-96, Nagoya, Japan, pp. 1, Sept. 2023. (2023)
  • Conference Papers
    S. Wandale, K. Sato and K. Ichige, "Enhanced Maximum Interelement Constrained Array Design via Simple Hole-Filling Strategy," 2023 IEEE International Radar Conference (RADAR), Sydney, Australia, 2023, pp. 1-5, doi: 10.1109/RADAR54928.2023.10371116. (2023)
    doi: 10.1109/RADAR54928.2023.10371116.
  • Conference Papers
    K. Sato, S. Wandale, K. Ichige, K. Kimura and R. Sugiura, "Low-Cost Vehicle In-Cabin Occupancy Detection Using An Approximate Model of XGBoost," 2023 IEEE International Radar Conference (RADAR), Sydney, Australia, 2023, pp. 1-6, doi: 10.1109/RADAR54928.2023.10371022. (2023)
    doi: 10.1109/RADAR54928.2023.10371022.
  • Journal Article
    S. Wandale and K. Ichige, "Flexible extended nested arrays for DOA estimation: Degrees of freedom perspective" Signal Processing, vol. 201, (108710), Dec. 2022. (2022)
    https://www.sciencedirect.com/science/article/abs/pii/S0165168422002493
  • Conference Papers
    S. Wandale and K. Ichige, "Flexible Extended Nested Array with Multiple Subarrays Achieving Improved Degrees of Freedom," 2022 30th European Signal Processing Conference (EUSIPCO), 2022, pp. 1931-1935. (2022)
    https://ieeexplore.ieee.org/abstract/document/9909786
  • Journal Article
    S. Wandale and K. Ichige, "Design of sparse arrays via deep learning for enhanced DOA estimation. " EURASIP Journal of Advanced Signal Processing, vol. 21( 2021), 2021. https://doi.org/10.1186/s13634-021-00727-5 (2021)
    https://link.springer.com/article/10.1186/s13634-021-00727-5
  • Journal Article
    S. Wandale and K. Ichige, "Simulated Annealing Assisted Sparse Array Selection Utilizing Deep Learning," in IEEE Access, vol. 9, pp. 156907-156914, 2021, doi: 10.1109/ACCESS.2021.3129856. (2021)
    https://ieeexplore.ieee.org/abstract/document/9623448
  • Conference Papers
    S. Wandale and K. Ichige, "A Nested Array Geometry with Enhanced Degrees of Freedom and Hole- Free Difference Coarray," 2021 29th European Signal Processing Conference (EUSIPCO), 2021, pp. 1905-1909, doi: 10.23919/EUSIPCO54536.2021.9616342. (2021)
    https://ieeexplore.ieee.org/abstract/document/9616342
  • Conference Papers
    S. Wandale, G. Taulo, T. Nammelo, D. Kondwani, P. Musiyapo and C. Mikeka, "Need for TVWS Availability Quantification After the Analogue TV Switch-Off," 2021 International Conference on COMmunication Systems & NETworkS (COMSNETS), 2021, pp. 74-77, doi: 10.1109/COMSNETS51098.2021.9352861. (2021)
    https://ieeexplore.ieee.org/abstract/document/9352861
  • Conference Papers
    S. Wandale, G. Taulo, D. Kondwani, P. Musivapo and C. Mikeka, "Impact of Analogue Switch-Off on Availability of TVWS: A Quantitative Assessment," 2020 IEEE 17th International Conference on Smart Communities: Improving Quality of Life Using ICT, IoT and AI (HONET), 2020, pp. 28-31, doi: 10.1109/HONET50430.2020.9322824. (2020)
    https://ieeexplore.ieee.org/abstract/document/9322824
  • Conference Papers
    S. Wandale and K. Ichige, "On the DOA Estimation Performance of Optimum Arrays Based on Deep Learning," 2020 IEEE 11th Sensor Array and Multichannel Signal Processing Workshop (SAM), 2020, pp. 1-5, doi: 10.1109/SAM48682.2020.9104365. (2020)
    https://ieeexplore.ieee.org/abstract/document/9104365
  • Conference Papers
    S. Wandale and K. Ichige, "2D Sparse Array Selection via Deep Learning," 2020 International Symposium on Antennas and Propagation (ISAP), 2021, pp. 445-446, doi: 10.23919/ISAP47053.2021.9391414. (2020)
    https://ieeexplore.ieee.org/abstract/document/9391414
  • Conference Papers
    S. Wandale, T. Basikolo and K. Ichige, "Super Nested Sparse Circular Array for High Resolution DOA Estimation and its Wideband Extension," 2019 International Radar Conference (RADAR), 2019, pp. 1-4, doi: 10.1109/RADAR41533.2019.171416. (2019)
    https://ieeexplore.ieee.org/abstract/document/9078927
  • Conference Papers
    S. Wandale, T. Basikolo and K. Ichige, "Super Nested Sparse Circular Array for High Resolution DOA Estimation," 2019 IEEE International Symposium on Circuits and Systems (ISCAS), 2019, pp. 1-5, doi: 10.1109/ISCAS.2019.8702389. (2019)
    https://ieeexplore.ieee.org/abstract/document/8702389