Dr Chamith Abewardana Wijenayake

Senior Lecturer - Teaching Focused

School of Information Technology and Electrical Engineering
Faculty of Engineering, Architecture and Information Technology
c.wijenayake@uq.edu.au
+61 7 336 51182

Overview

Chamith completed his PhD in Electrical and Computer Engineering at the University of Akron, Ohio, USA in 2014 and BSc (Hons) degree in Electronic and Telecommunications Engineering with first class honours at the University of Moratuwa, Sri Lanka in 2007. His research interests and expertise include multidimensional signal processing algorithms and digital hardware architectures for antenna array based wideband beamforming and light field processing. His teaching interests and expertise span over the areas of embedded systems, FPGA based system design and signal processing. He is also exploring innovative practices in learning and teaching in the context of Engineering Education. Chamith has received a number of awards including the Outstanding Student Research Award at the University of Akron, Ohio, USA, in 2011 (link) and he is one of the two recipients of the IEEE Circuits and Systems Pre-Doctoral Award in 2014 (link). From 2015-2019 he was a lecturer at the School of Electrical Engineering and Telecommunications, University of New South Wales, Sydney, Australia.

Research Interests

  • Signal processing algorithms and hardware architectures for wideband RF beamforming
  • Signal processing algorithms and hardware architectures for high dimensional light fields

Qualifications

  • Doctor of Philosophy, The University of Akron

Publications

View all Publications

Publications

Journal Article

Conference Publication

  • Premaratne, Sanduni U., Edussooriya, Chamira U. S., Wijenayake, Chamith, Bruton, Len T. and Agathoklis, Panajotis (2019). A 4-D sparse FIR hyperfan filter for volumetric refocusing of light fields by hard thresholding. In: International Conference on Digital Signal Processing, DSP. International Conference on Digital Signal Processing (DSP), Shanghai, China, (). 19-21 November 2018. doi:10.1109/ICDSP.2018.8631601

  • Wijenayake, Chamith, Gilbert, Will, Van Winden, Simon and Ahmed, Beena (2019). Concept-focused in-class demonstrations for teaching embedded system design in large classes. In: Proceedings of 2018 IEEE International Conference on Teaching, Assessment, and Learning for Engineering, TALE 2018. 2018 IEEE International Conference on Teaching, Assessment, and Learning for Engineering, TALE 2018, Wollongong, NSW, Australia, (1133-1137). 4-7 December 2018. doi:10.1109/TALE.2018.8615178

  • Ahmed, Beena, Kagita, Mohan, Wijenayake, Chamith Abewardana and Ravishankar, Jayashri (2019). Implementation guidelines for an automated grading tool to assess short answer questions on digital circuit design course. In: Proceedings of 2018 IEEE International Conference on Teaching, Assessment, and Learning for Engineering, TALE 2018. 2018 IEEE International Conference on Teaching, Assessment, and Learning for Engineering, TALE 2018, Wollongong, NSW, Australia, (1142-1145). 4-7 December 2018. doi:10.1109/TALE.2018.8615228

  • Edussooriya, C. U.S., Wijenayake, C., Pulipati, S., Madanayake, A. and Bruton, L. T. (2019). Low-complexity wideband transmit array using variable-precision 2-d sparse FIR digital filters. In: Proceedings - IEEE International Symposium on Circuits and Systems. IEEE International Symposium on Circuits and Systems (ISCAS), Sapporo, Japan, (). 26-29 May 2019. doi:10.1109/ISCAS.2019.8702602

  • Suthokumar, Gajan, Sriskandaraja, Kaavya, Sethu, Vidhyasaharan, Wijenayake, Chamith and Ambikairajah, Eliathamby (2019). Phoneme specific modelling and scoring techniques for anti spoofing system. In: ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings. IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Brighton, United Kingdom, (6106-6110). 12-17 May 2019. doi:10.1109/ICASSP.2019.8682411

  • Pulipati, Sravan, Ariyarathna, Viduneth, Edussooriya, Chamira U. S., Wijenayake, Chamith, Wang, Xin and Madanayake, Arjuna (2019). Real-time FPGA-based multi-beam directional sensing of 2.4 GHz ISM RF sources. In: MERCon 2019 - Proceedings, 5th International Multidisciplinary Moratuwa Engineering Research Conference. Moratuwa Engineering Research Conference (MERCon), Moratuwa, Sri Lanka, (129-134). 3-5 July 2019. doi:10.1109/MERCon.2019.8818787

  • Liyanage, Namalka, Wijenayake, Chamith, Edussooriya, Chamira U.S. and Ambikairajah, Eliathamby (2019). Reduced-complexity depth filtering and occlusion suppression using modulated-sparse light fields. In: Proceedings - IEEE International Symposium on Circuits and Systems. IEEE International Symposium on Circuits and Systems (ISCAS), Sapporo, Japan, (). 26-29 May 2019. doi:10.1109/ISCAS.2019.8702412

  • Suthokumar, Gajan, Sriskandaraja, Kaavya, Sethu, Vidhyasaharan, Wijenayake, Chamith, Ambikairajah, Eliathamby and Li, Haizhou (2019). Use of claimed speaker models for replay detection. In: 2018 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2018 - Proceedings. Asia-Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA ASC), Honolulu, HI, United States, (1038-1046). 12-15 November 2018. doi:10.23919/APSIPA.2018.8659510

  • Suthokumar, Gajan, Sriskandaraja, Kaavya, Sethu, Vidhyasaharan, Wijenayake, Chamith and Ambikairajah, Eliathamby (2018). An Investigation about the Scalability of the Spoofing Detection System. In: , , (). . doi:10.1109/ICIAFS.2018.8913369

  • Edussooriya, Chamira U. S., Wijenayake, Chamith, Bruton, Len T. and Agathoklis, Panajotis (2018). Multidimensional spatio-temporal filters for depth-velocity filtering in light field videos. In: , , (1-6). . doi:10.1109/ICIINFS.2017.8300353

  • Liyanage, Namalka, Wijenayake, Chamith, Edussooriya, Chamira, Madanayake, Arjuna, Agathoklis, Pan, Ambikairajah, Eliathamby and Bruton, Len (2018). Low-complexity 4-D IIR filters for multi-depth filtering and occlusion suppression in light fields. In: Proceedings - IEEE International Symposium on Circuits and Systems. IEEE International Symposium on Circuits and Systems (ISCAS), Florence, Italy, (). 27-30 May 2018. doi:10.1109/ISCAS.2018.8350971

  • Suthokumar, Gajan, Sethu, Vidhyasaharan, Wijenayake, Chamith and Ambikairajah, Eliathamby (2018). Modulation dynamic features for the detection of replay attacks. In: Proceedings of the Annual Conference of the International Speech Communication Association, INTERSPEECH. 19th Annual Conference of the International Speech Communication Association (INTERSPEECH 2018), Hyderabad, India, (691-695). 2-6 September 2018. doi:10.21437/Interspeech.2018-1846

  • Cetin, Ediz, Wijenayake, C., Sethu, V. and Ambikairajah, E. (2017). A flipped mode approach to teaching an electronic system design course. In: , , (223-228). . doi:10.1109/TALE.2017.8252337

  • Udayanga, Nilan, Madanayake, Arjuna, Wijenayake, Chamith, Ahmadi, Peyman, Belostotski, Leonid, Maundy, Brent, Bruton, Len T. and Elwakil, Ahmed (2017). All-pass filter based synthesis of multifunctional microwave active circuits. In: IEEE Vehicular Technology Conference. IEEE 85th Vehicular Technology Conference (VTC Spring), Sydney, NSW, Australia, (). 4-7 June 2017. doi:10.1109/VTCSpring.2017.8108422

  • Sivanathan, Arunan, Sherratt, Daniel, Gharakheili, Hassan Habibi, Radford, Adam, Wijenayake, Chamith, Vishwanath, Arun and Sivaraman, Vijay (2017). Characterizing and classifying IoT traffic in smart cities and campuses. In: 2017 IEEE Conference on Computer Communications Workshops, INFOCOM WKSHPS 2017. 2017 IEEE Conference on Computer Communications Workshops (INFOCOM WKSHPS), Atlanta, GA USA, (559-564). 1-4 May 2017. doi:10.1109/INFCOMW.2017.8116438

  • Suthokumar, Gajan, Sriskandaraja, Kaavya, Sethu, Vidhyasaharan, Wijenayake, Chamith and Ambikairajah, Eliathamby (2017). Independent modelling of high and low energy speech frames for spoofing detection. In: Proceedings of the Annual Conference of the International Speech Communication Association, INTERSPEECH. 18th Annual Conference of the International Speech Communication Association (INTERSPEECH 2017), Stockholm, Sweden, (2606-2610). 20-24 August 2017. doi:10.21437/Interspeech.2017-836

  • Udayanga, Nilan, Madanayake, Arjuna, Wijenayake, Chamith and Bruton, Len T. (2016). Increasing SINR of microwave Applebaum adaptive arrays using analog 2D-IIR space-time network-resonant beam filters. In: 2015 10th International Conference on Information, Communications and Signal Processing, ICICS 2015. 10th International Conference on Information, Communications and Signal Processing (ICICS), Singapore, Singapore, (). 2-4 December 2015. doi:10.1109/ICICS.2015.7459861

  • Wijenayake, Chamith, Madanayake, Arjuna, Belostotski, Leonid, Xu, Yongsheng and Bruton, Len T. (2016). Linear RF apertures using 2-D analog beam filters. In: Proceedings - IEEE International Symposium on Circuits and Systems. IEEE International Symposium on Circuits and Systems (ISCAS), Montreal, QC, Canada, (293-296). 22-25 May 2016. doi:10.1109/ISCAS.2016.7527228

  • Madanayake, Arjuna, Wijenayake, Chamith, Belostotski, Leonid and Bruton, Len T. (2015). An overview of multi-dimensional RF signal processing for array receivers. In: MERCon 2015 - Moratuwa Engineering Research Conference. Moratuwa Engineering Research Conference (MERCon), Moratuwa, Sri Lanka, (255-259). 7-8 April 2015. doi:10.1109/MERCon.2015.7112355

  • Udayanga, Nilan, Madanayake, Arjuna, Wijenayake, Chamith and Acosta, Roberto (2015). Applebaum adaptive array apertures with 2-D IIR space-time circuit-network resonant pre-filters. In: IEEE National Radar Conference - Proceedings. IEEE Radar Conference (RadarCon), Arlington, VA, United States, (611-615). 10-15 May 2015. doi:10.1109/RADAR.2015.7131070

  • Madanayake, Arjuna, Wijenayake, Chamith and Belestotski, Leonid (2015). Continuous-time 2-D IIR+time-delay linear aperture arrays. In: IEEE Radio and Wireless Symposium, RWS. IEEE Radio and Wireless Symposium (RWS), San Diego, CA, United States, (38-40). 25-28 January 2015. doi:10.1109/RWS.2015.7129736

  • Madanayake, Arjuna, Udayanga, Nilan, Wijenayake, Chamith and Bruton, Len (2015). Electronically steerable directed energy using space-time network resonant digital systems. In: IEEE Antennas and Propagation Society, AP-S International Symposium (Digest). IEEE International Symposium on Antennas and Propagation and USNC/URSI National Radio Science Meeting, Vancouver, BC, Canada, (2283-2284). 19-24 July 2015. doi:10.1109/APS.2015.7305530

  • Udayanga, Nilan, Madanayake, Arjuna and Wijenayake, Chamith (2015). FPGA-based network-resonance applebaum adaptive arrays for directional spectrum sensing. In: Midwest Symposium on Circuits and Systems. IEEE 58th International Midwest Symposium on Circuits and Systems (MWSCAS), Fort Collins, CO, United States, (). 2-5 August 2015. doi:10.1109/MWSCAS.2015.7282165

  • Kulasekera, Sunera, Madanayake, Arjuna, Wijenayake, Chamicth, Bayer, Fabio M., Suarez, Dora and Cintra, Renato J. (2015). Multi-beam 8×8 RF aperture digital beamformers using multiplierless 2-D FFT approximations. In: MERCon 2015 - Moratuwa Engineering Research Conference. Moratuwa Engineering Research Conference (MERCon), Moratuwa, Sri Lanka, (260-264). 7-8 April 2015. doi:10.1109/MERCon.2015.7112356

  • Madanayake, Arjuna, Wijenayake, Chamith, Lin, Zhiping and Dornback, Nathan (2015). Recent advances in multidimensional systems and signal processing: an overview. In: Proceedings - IEEE International Symposium on Circuits and Systems. EEE International Symposium on Circuits and Systems (ISCAS), Lisbon, Portugal, (2365-2368). 24-27 May 2015. doi:10.1109/ISCAS.2015.7169159

  • Udayanga, Nilan, Madanayake, Arjuna, Wijenayake, Chamith, Ahmadi, Peyman and Belostotski, Leonid (2015). Tunable multiband RF CMOS active filter arrays. In: Proceedings - IEEE International Symposium on Circuits and Systems. IEEE International Symposium on Circuits and Systems (ISCAS), Lisbon, Portugal, (1682-1685). 24-27 May 2015. doi:10.1109/ISCAS.2015.7168975

  • Madanayake, Arjuna, Belostotski, Leonid, Wijenayake, Chamith, Bruton, Len and Devabhaktuni, Vijay (2014). Analog 2-D IIR beam filters for EARS in UAS ecosystems. In: IEEE Antennas and Propagation Society, AP-S International Symposium (Digest). IEEE Antennas and Propagation Society International Symposium (APSURSI), Memphis, TN, United States, (991-992). 6-11 July 2014. doi:10.1109/APS.2014.6904823

  • Madanayake, Arjuna, Wijayaratna, Sewwandi and Wijenayake, Chamith (2014). Combined time-delay FIR and 2-D IIR filters for EARS, radar, and imaging applications. In: Midwest Symposium on Circuits and Systems. IEEE 57th International Midwest Symposium on Circuits and Systems (MWSCAS), College Station, TX, United States, (543-546). 3-6 August 2014. doi:10.1109/MWSCAS.2014.6908472

  • Udayanga, Nilan, Madanayake, Arjuna and Wijenayake, Chamith (2014). Direction/location estimation and modulation detection for RF sources using steerable 3D IIR digital beam filters. In: Proceedings of SPIE - The International Society for Optical Engineering. Conference on Wireless Sensing, Localization, and Processing IX, Baltimore, MD, United States, (). 5-9 May 2014. doi:10.1117/12.2050800

  • Madanayake, Arjuna, Udayanga, Nilan, Wijenayake, Chamith, Almalkawi, Mohammad and Devabhaktuni, Vijay (2014). Directional cyclostationary feature detectors using 2-D IIR RF spiral-antenna beam digital filters. In: Proceedings - IEEE International Symposium on Circuits and Systems. IEEE International Symposium on Circuits and Systems (ISCAS), Melbourne, VIC, Australia, (2499-2502). 1-5 June 2014. doi:10.1109/ISCAS.2014.6865680

  • Wijenayake, Chamith, Madanayake, Arjuna and Bruton, Len (2014). Hexagonal multi-beam analog RF aperture array. In: Proceedings - IEEE International Symposium on Circuits and Systems. IEEE International Symposium on Circuits and Systems (ISCAS), Melbourne, VIC, Australia, (1680-1683). 1-5 June 2014. doi:10.1109/ISCAS.2014.6865476

  • Wijenayake, Chamith, Madanayake, Arjuna, Xu, Yonghseng, Belostotski, Leonid and Bruton, Len T. (2013). A Steerable DC-1 GHz all-pass filter-Sum RF space-time 2-D beam filter in 65 nm CMOS. In: Proceedings - IEEE International Symposium on Circuits and Systems. IEEE International Symposium on Circuits and Systems (ISCAS), Beijing, China, (1276-1279). 19-23 May 2013. doi:10.1109/ISCAS.2013.6572086

  • Wijenayake, Chamith, Madanayake, Arjuna, Bruton, Len T. and Devabhaktuni, Vijay (2013). DOA-estimation and source-localization in CR-networks using steerable 2-D IIR beam filters. In: Proceedings - IEEE International Symposium on Circuits and Systems. IEEE International Symposium on Circuits and Systems (ISCAS), Beijing, China, (65-68). 19-23 May 2013. doi:10.1109/ISCAS.2013.6571783

  • Madanayake, Arjuna, Wijenayake, Chamith, Potluri, Uma, Judith, V. and Mugler, Dale (2013). Low-complexity algorithms for spatio-temporal directional spectrum sensing with applications in cognitive radio. In: Proceedings of SPIE - The International Society for Optical Engineering. Conference on Wireless Sensing, Localization, and Processing VIII, Baltimore, MD, United States, (). 29 April - 3 May 2013. doi:10.1117/12.2016107

  • Madanayake, Arjuna, Wijenayake, Chamith, Gunarathne, Thushara, Belostotski, Leonid, Xu, Yongsheng and Bruton, Len (2013). Rejection of interference and near-field coupled LNA-noise on FPA-fed multibeam dish antennas using 3-D analog filters. In: Proceedings of SPIE - The International Society for Optical Engineering. Conference on Radar Sensor Technology XVII, Baltimore, MD, United States, (). 29 April - 3 May 2013. doi:10.1117/12.2016093

  • Madanayake, A., Wijenayake, C., Tran, N., Cooklev, T., Hum, S. V. and Bruton, L. T. (2012). Directional spectrum sensing using tunable multi-D space-time discrete filters. In: , , (). . doi:10.1109/WoWMoM.2012.6263754

  • Wijenayake, Chamith, Madanayake, Arjuna, Xu, Yongsheng, Belostotski, Leonid and Bruton, Len T. (2012). Discrete space continuous time 2D delay block using 2D all-pass frequency planar networks. In: ISCAS 2012 - 2012 IEEE International Symposium on Circuits and Systems. IIEEE International Symposium on Circuits and Systems (ISCAS), Seoul, South Korea, (664-667). 20-23 May 2012. doi:10.1109/ISCAS.2012.6272120

  • Madanayake, Arjuna, Wijenayake, Chamith, Joshi, Rimesh M., Grover, Jim, Carletta, Joan, Adams, Jay, Hartley, Tom and Ogunfunmi, Tokunbo (2012). Teaching freshmen VHDL-based digital design. In: ISCAS 2012 - 2012 IEEE International Symposium on Circuits and Systems. IEEE International Symposium on Circuits and Systems (ISCAS), Seoul, South Korea, (2701-2704). 20-23 May 2012. doi:10.1109/ISCAS.2012.6271865

  • Wijenayake, Chamith, Madanayake, Arjuna, Belostotski, Leonid and Bruton, Len T. (2011). Recent progress on analog/digital VLSI 2D filter circuits for beamforming antenna arrays. In: , , (). . doi:10.1109/nDS.2011.6076832

  • Madanayake, Arjuna, Rajapaksha, Nilanka, Wijenayake, Chamith, Lee, Kye-Shin, Bruton, Len T. and Belostotski, Leonid (2011). A new class of spatially-discrete time-continuous 2D IIR filters based on wave-digital-filter theory. In: , , (685-690). . doi:10.1109/PACRIM.2011.6032976

  • Madanayake, Arjuna, Belostotski, Leonid, Wijenayake, Chamith and Bruton, Len T. (2011). Analog 2D fan filters from discrete domain transfer functions. In: Proceedings - IEEE International Symposium on Circuits and Systems. IEEE International Symposium of Circuits and Systems (ISCAS), Rio de Janeiro, Brazil, (1652-1655). 15-18 May 2011. doi:10.1109/ISCAS.2011.5937897

  • Wijenayake, C. K., Madanayake, A. and Bruton, L. T. (2010). FPGA-prototypes of differential-form 2D-IIR systolic-array DSP architectures for multi-beam plane-wave filters. In: , , (58-63). . doi:10.1109/SIPS.2010.5624763

  • Rajapaksha, N. T., Wijenayake, C., Madanayake, A. and Bruton, L. T. (2010). Raster-scanned wave-digital filter architectures for multi-beam 2D IIR broadband beamforming. In: , , (112-115). . doi:10.1109/ICM.2010.5696086

  • Wijenayake, Chamith, Madanayake, Arjuna and Bruton, Len T. (2010). Systolic-array architecture for 2D IIR wideband dual-beam space-time plane-wave filters. In: , , (229-232). . doi:10.1109/MWSCAS.2010.5548677