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    2024

    • Nazym Alipbayeva, Bikash Nakarmi, and Ikechi Augustine Ukaegbu, “Investigation of Optical Bi-Stability in Micro-ring Resonator Structures,” accepted, SPIE Photonics West, San Francisco, USA, January 2024.

    • Assylkan Nurgali, Bikash Nakarmi, and Ikechi Augustine Ukaegbu, “Photonic Micro-ring Design and Analysis Using Machine Learning Techniques,” accepted, SPIE Photonics West, San Francisco, USA, January 2024.


     

    2023

    • Sultan Maken, Koblan Kuanysh, Dhanajay Singh, and Ikechi Augustine Ukaegbu, “Navigating the Complexities of 60 GHz 5G Wireless Communication Systems: Challenges and Strategies,” 15th International conference on Intelligent Human Computer Interaction (IHCI), Daegu, South Korea, November 2023.

    • Koblan Kuanysh, Dhanajay Singh, and Ikechi Augustine Ukaegbu, “A Survey on Channel Estimation Technique Classifications and Various Algorithms,” 15th International conference on Intelligent Human Computer Interaction (IHCI), Daegu, South Korea, November 2023.

    • Hum Nath Parajuli, Galymzhan Bakhtiyarov, Bikash Nakarmi, and Ikechi Augustine Ukaegbu, “Interference Mitigation in Multi-Radar Environment Using LSTM-Based Recurrent Neural Network,” 15th International Conference on Intelligent Human Computer Interaction (IHCI 2023), Daegu, South Korea, November 2023.

    • Satzhan Askarov, Refik Kizilirmak, and Ikechi Augustine Ukaegbu, “Path Loss Analysis and System Coverage for 28 GHz, 60 GHz and 73 GHz Band Wireless Communication Systems,” IEEE International Conference on the Application of Information and Communication Technologies, Baku, Azerbaijan, October 2023.

    • Talha Anwar, Arjuna Marzuki, and Ikechi Augustine Ukaegbu, “Design of Wideband Microstrip Patch Antenna Array with Improved Feedline for 60GHz Wireless Applications,” IEEE International Conference on the Application of Information and Communication Technologies, Baku, Azerbaijan, October 2023.

    • Yernur Shaimerden, Arjuna Marzuki, and Ikechi Augustine Ukaegbu, “A 60 GHz Compact Butler Matrix Network Design,” IEEE International Conference on the Application of  Information and Communication Technologies, Baku, Azerbaijan, October 2023.

    • Hum Nath Parajuli, Bikash Nakarmi, Aigerim Ashimbayeva, and Ikechi Augustine Ukaegbu, “Enhancing Detection Performance of Multi-band Photonic Radars Through Band Fusion With Coherent Processing,” IEEE International Topical Meeting on Microwave Photonics (MWP) 2023, Nanjing, China, October 2023.

     

    • Hum Nath Parajuli, Bikash Nakarmi, Aigerim Ashimbayeva, and Ikechi Augustine Ukaegbu, “Interference-Resistant Photonically Generated Orthogonal Pair Multi-Chirp-LFM Waveform,” IEEE International Topical Meeting on Microwave Photonics (MWP) 2023, Nanjing, China, October 2023.

    • Bikash Nakarmi, Ikechi Augustine Ukaegbu, Hum Nath Parajuli, Aigerim Ashimbayeva, and, Shilong Pan, “Interference Mitigation in a Multi-radar Environment through Multi-step Random Hopped LFM Waveform,” IEEE Research and Applications of Photonics in Defense (RAPID 2023), Florida, USA, September 2023.

    • Hum Nath Parajuli, Bikash Nakarmi, Aigerim Ashimbayeva, and Ikechi Augustine Ukaegbu, “Mitigating Coherent Interference in a Multi-RADAR Environment with a Multi-Slope Linear Chirp Signal,” International Conference on Advanced Engineering and ICT-Convergence 2023, Jeju Island, South Korea, July 2023.

    • Dauren Beisenkhanov, Refik Kizilirmak, Tuncer Baykas, and Ikechi Augustine Ukaegbu “Performance Evaluation of DTN Routing Protocols for Drone Swarms Using a Web-Based Simulator,” IEEE International Symposium on Local and Metropolitan Area Networks, July 2023.

    • Y. Olzhabay, Ikechi A. Ukaegbu, Annie Ng, "Performance Evaluation of PSCMs tilted angle in BIPV application: A case study for Kazakhstan," IEEE PVSC, June 2023.

    • Ikechi Augustine Ukaegbu, Elochukwu Onyejegbu, Francis Mokogwu, and Refik Caglar Kizilirmak “Simplified and Inexpensive Integrated Simulation and Hands-On Experiments in Teaching Electronics Instrumentation and Measurement Laboratory Course,” 2023 IEEE Global Engineering Education Conference (EDUCON), Kuwait, May 2023.

    • Refik Caglar Kizilirmak, Ablaikhan Kassayev, and Ikechi Augustine Ukaegbu “A Comparative Study of Simulated and Hands-On Experiments in Teaching Computer Networks Laboratory Course,” 2023 IEEE Global Engineering Education Conference (EDUCON), Kuwait, May 2023.

    • Assylkan Nurgali, Bikash Nakarmi, and Ikechi Augustine Ukaegbu, “Transfer Function Analysis of Si-Photonics Based Add-Drop Micro-ring Resonator for High-Speed Applications,” SPIE Optics & Optoelectronics 2023, Prague, Czech Republic, April 2023.

    • Sanusi Isiaka Olatunji, A. Marzuki, Annie Ng, and Ikechi A. Ukaegbu," Perovskite PV MPPT Design for BIPV Applications," Accepted, IEEE International Conference in Power Engineering Application, Malaysia, March, 2023.

    • Anuar Turekhanov, Suanu Nwigbo, Bikash Nakarmi, and Ikechi Augustine Ukaegbu, “Photonically Generated Waveforms based on Single and Double Injection in a Semiconductor Laser for RADAR Applications,” IEEE EDTM 2023, Seoul, South Korea, March 2023.

    • Elochukwu Onyejegbu, Arman Lee, Aigerim Ashimbayeva, Bikash Nakarmi, and Ikechi Augustine Ukaegbu, “Analysis and Mitigation of Interference in a Multi-RADAR Environment,” IEEE EDTM 2023, Seoul, South Korea, March 2023.

    • Dinmukhamedali Otynshy, Nazym Alipbayeva, Assylkhan Nurgali, Bikash Nakarmi, and Ikechi Augustine Ukaegbu, “Silicon Photonics Micro-ring Resonator Based SR Latch for Optical Memory Applications,” SPIE Photonics West 2023, San Francisco, California, USA, Jan. 2023.

    • Alisher Akhmed, Almar Gaziz, Nazym Alipbayeva, Bikash Nakarmi, and Ikechi Augustine Ukaegbu, “High-Speed Silicon Waveguide 3-to-8 Decoder Based on Electro-Optic Effects,” SPIE Photonics West 2023, San Francisco, California, USA, Jan. 2023.

    • Abay Khamidullin, Refik Caglar Kizilirmak, Murat Uysal, and Ikechi Augustine Ukaegbu “FSO Link Attenuation Measurement in Extreme Winter Conditions for Secure 5G Applications,” SPIE Photonics West 2023, San Francisco, California, USA, Jan. 2023.


     

    2022

    • Francis Nwose Mokogwu, Mohammad Hashmi, Arjuna Marzuki, Annie Ng, and Ikechi Augustine Ukaegbu “Design of an Improved Gain Buck-Boost Converter for Photovoltaic Energy Harvesting Systems,” IEEE International Conference on Power and Energy, Langkawi, Malaysia, pp. 475-480, December 2022.

    • Y. Olzhabay, M. Najwan Hamidi, A. Marzuki, D. Ishak, Annie Ng, and Ikechi A. Ukaegbu," Estimation of Energy Generation from BIPV Samples Based on Perovskite Solar cells in Kazakhstan," IEEE International Conference on Power and Energy, Langkawi, Malaysia, pp. 342-345, December, 2022.

    • Yansong Bai, Bikash Nakarmi, Ikechi Augustine Ukaegbu, and Silong Pan, “Analysis of disturbances in the multi-radar environment and mitigation approaches,” SPIE/COS, November, 2022.

    • Francis Nwose Mokogwu, Arjuna Marzuki, Annie Ng, and Ikechi Augustine Ukaegbu “Variable Input Transimpedance Amplifier (TIA) for Perovskite and Thin-film Photovoltaics Sensing Applications,” Accepted, IEEE Conference on Communications, Information, Electronic and Energy Systems, Veliko Tarnovo, Bulgaria, November 2022.

    • Chuanqi Fanq, Yansong Bai, Hao Chen, Ikechi Augustine Ukaegbu, Bikash Nakarmi, and Silong Pan, “Generation of random-hopped LFM signal based on optical injection in a DFB laser,” International Conference on Optical Instruments and Technology (OIT21), September, 2022.

    • Arman Lee, Bikash Nakarmi, and Ikechi Augustine Ukaegbu, “Design of thermally tuned micro-ring resonator based 4 x 2 encoder,” SPIE Photonics West, San Francisco, California, USA, March, 2022.

    • Darmen Ilyas, Dinmukhamedali Otynshy, Bikash Nakarmi, and Ikechi Augustine Ukaegbu, “Design of Micro-ring Resonator-Based Si-photonics 1-bit Digital Comparator,” SPIE Photonics West, San Francisco, California, USA, March, 2022.


     

    2021

    • Chuanqi Fanq, Vivek Raj Shrestha, Ikechi Augustine Ukaegbu, Guanghui Ren, Bikash Nakarmi, and Silong Pan, “A grating-assisted microring resonator for wideband filtering,” International Conference on Optical Instruments and Technology (OIT21), China, November, 2021.

    • Chuanqi Fanq, Yansong Bai, Hao Chen, Ikechi Augustine Ukaegbu, Bikash Nakarmi, and Silong Pan, “Generation of random-hopped LFM signal based on optical injection in a DFB laser,” International Conference on Optical Instruments and Technology (OIT21), China, November, 2021.

    • Dias Azhigulov, Nazym Alipbayeva, Bikash Nakarmi, and Ikechi Augustine Ukaegbu, “0.5 Mbps Photonic logic gates based on a pair of micro-ring resonators,” OSA Frontiers in Optics Laser Science APS/DLS, Washington DC, November, 2021.

    • Bikash Nakarmi, Hao Chen, Ikechi Augustine Ukaegbu, Bijay Gaudel, Ukaesh Nakarmi, Sarvanan Muthaiyah, Annie Ng, Xiangchuan Wang, and Silong Pan, “Linear Frequency Modulated Photonics RADAR Using Injection Locking in Semiconductor Laser,” International Conference on Electronics, Communications and Information Technology (ICECIT), Bangladesh, September 2021 (Invited).

    • Arjuna B. Marzuki, and Ikechi A. Ukaegbu, "I/Q Demodulator for a Doppler System," 32nd IEEE International Conference on Microelectronics (MIEL 2021), September 2021.

    • Y. Olzhabay, D. Aidarkhanov, Ikechi A. Ukaegbu, Annie Ng, "Performance Evaluation on Low Energy Consumption Devices Powered by Indoor Perovskite Solar Cells," Proceedings of IEEE PVSC 48, June 2021.

    • Dauren Beisenbekov and Ikechi Augustine Ukaegbu, “Si-Photonics Based Digital Half-adder Using Micro-ring Resonator Structures,” Proceedings of SPIE Photonics West, San Francisco, vol. 116910, pp. 116910V, March 2021.


     

    2020

    • Ikechi Augustine Ukaegbu and Hyo-Hoon Park, “The Design of Si-Based Fresnel-zone Lens for 3D IC Optoelectronic Interconnect Applications,” Proceedings of SPIE Photonics West, San Francisco, California, USA, Feb., 2020.

    • Dias Azhigulov, Hyo-Hoon Park, and Ikechi Augustine Ukaegbu, “Design of Si-Photonics Based Logic Gates Using Micro-ring Resonator,” Proceedings of SPIE Photonics West, San Francisco, California, USA, Feb., 2020.

    • Alisher Akhmed, Ainur Koshkinbayeva, Hyo-Hoon Park, and Ikechi Augustine Ukaegbu, “Design of Silicon Photonics Based Accelerometer for Displacement Sensing Applications,” Proceedings of SPIE Photonics West, San Francisco, California, USA, Feb., 2020.

    • Nga T.H. Nguyen, Ikechi Augustine Ukaegbu, Jamshid Sangirov, Hyo-Hoon Park, “Integrated Optical Receiver Module with Demultiplexer,” Proceedings of SPIE Photonics West, San Francisco, California, USA, Feb., 2020.


     

    2019

    • Bagdat Kamalbayeva, Nazerke Seidullayeva, Adilbek Sain, Pritee Perwekar and Ikechi Augustine Ukaegbu, “Analysis on the Architectural and Download Behavior of Xunlei,” accepted 2019, 5th International Conference on Intelligent Computing and Applications (ICICA-19), Delhi, India, Dec., 2019.

    • Sabit Shaiholla, Assest Bekov, and Ikechi Augustine Ukaegbu, “Industry 4.0: Redefining Manufacturing in Kazakhstan,” Proceedings of the 21st IEEE International Conference on Advanced Communications Technology (ICACT 2019), pp. 606-609, Phoenix Park, Korea, February, 2019

    • Aisultan Alimkhan, Adilkhan Makhambayev, and Ikechi Augustine Ukaegbu, H. S. V. S. Kumar Nunna, “Fourth Industrial Revolution: Towards Energy 4.0 in Kazakhstan,” Proceedings of the  21st IEEE International Conference on Advanced Communications Technology (ICACT 2019), pp. 527-532, Phoenix Park, Korea, February, 2019

    • Madina Kezhina, Ileskhan Kalysh, and Ikechi Augustine Ukaegbu, H. S. V. S. Kumar Nunna, “Virtual Power Plant in Industry 4.0: The Strategic Planning of Emerging Virtual Power Plant in Kazakhstan,” proceedings of the 21st IEEE International Conference on Advanced Communications Technology (ICACT 2019), pp. 600-605, Phoenix Park, Korea, February, 2019

    • Askar Maksim, Azamat Marlen, and Ikechi Augustine Ukaegbu, H. S. V. S. Kumar Nunna, “Application of Big Data in Smart Grids: Energy Analytics,” Proceedings of the 21st IEEE International Conference on Advanced Communications Technology (ICACT 2019), pp. 402-407, Phoenix Park, Korea, February, 2019

    • Dinar Orazgaliyev, Yerbolat Lukpanov, and Ikechi Augustine Ukaegbu, H. S. V. S. Kumar Nunna, “Towards the Application of Blockchain Technology for Smart Grids in Kazakhstan,” Proceedings of the 21st IEEE International Conference on Advanced Communications Technology (ICACT 2019), pp. 273-278, Phoenix Park, Korea, February, 2019

    • Elochukwu Onyejegbu, Dias Azhigulov and Ikechi Augustine Ukaegbu, “Numerical Analysis of A Dynamic Power-Aware Integrated Circuit for Optoelectronic Interconnect Applications,” accepted, SPIE Optics and Optoelectronics, Prague, Czech Republic, April, 2019.

    • Dias Azhigulov, Ikechi Augustine Ukaegbu, and Hyo-Hoon Park, “The Design of Universal Logic Gates Using Micro-ring Resonator Structures,” Proceedings of SPIE Photonics West, vol. 10912, pp. 1091218, San Francisco, California, USA, Feb., 2019.

    • Ikechi Augustine Ukaegbu, Anel Poluektova, Elochukwu Onyejegbu, Aresh Dadlani, and Hyo-Hoon Park, “Signal and Crosstalk Analysis Using Optical Convolution of Transmitted Optical Signals,” Proceedings of SPIE Photonics West, vol. 10912, pp. 1091219, San Francisco, California, USA, Feb., 2019.


     

    2018

    • Ikechi Augustine Ukaegbu, and Annie Ng, “Organometal Halide Perovskite Based Solar Cells: Impact of Growth Techniques, Efficiency and Circuit-Level Modeling,” (Invited Paper), 7th World Congress and Expo on Nanotechnology and Material Science, (Nano and Materials Science 2018), Germany, November, 2018.

    • Dias Azhigulov, Sabina Kairatova, Madina Myrzaliyeva, and Ikechi Augustine Ukaegbu, “Analyzing the BitTorent Ecosystem of Central Asia,” Proceedings, International Conference on Computing and Network Communications (CoCoNet 2018), Astana, Kazakhstan, August, 2018

    • Arshyn Zhanbolatov, Ayan Shymyrbay, Assilkhan Amankhan, Adilya Bakambekova, and Ikechi Augustine Ukaegbu, “Meeting Deadlines in Datacenter Networks: An Analysis on Deadline-Aware Transport Layer Protocols,” Proceedings, International Conference on Computing and Network Communications (CoCoNet 2018), Astana, Kazakhstan, August, 2018


     

    2013

    • Ikechi Augustine Ukaegbu, Jamshid Sangirov, Tae-Woo Lee, Mu Hee Cho, and Hyo-Hoon Park, “Effect of “Wire-bonded” and “Bend-pattern” Transmission Lines for High-Speed COB Optical Interconnects Applications,” Proceedings of the 20th Conference on Optoelectronics and Optical Communications (COOC 2013), May, 2013.

    • Jamshid Sangirov, Ikechi Augustine Ukaegbu, Nga T. H. Nguyen, Tae-Woo Lee, Mu Hee Cho and Hyo-Hoon Park, “Comparative Analysis of Single-ended and Differential Receiver Modules in 0.13 um CMOS Technology,” Proceedings of IEEE/ICACT, Phoenix Park, Korea, Jan., 2013


     

    2012

    • Ikechi Augustine Ukaegbu, Jamshid Sangirov, Bikash Nakarmi, Tae-Woo Lee, Mu Hee Cho, and Hyo-Hoon Park, “Thermal Effects on Interconnect Crosstalk of Optoelectronic Transmitter Modules,” SPIE/COS, Photonics Asia, Beijing, China, November, 2012.

    • Ikechi Augustine Ukaegbu, Jamshid Sangirov, Tae-Woo Lee, Mu Hee Cho, and Hyo-Hoon Park, “Efficient Heat Dissipation in Optoelectronic Transmitter Modules Using Thermally Enhanced PCB,” Photonics in Switching (PS 2012), Ajacio, Corsica, France, September, 2012.

    • Ikechi Augustine Ukaegbu, Jamshid Sangirov, Mu Hee Cho, Tae-Woo Lee, and Hyo-Hoon Park, “Analysis of Thermal Effects on Crosstalk and Performance of Optoelectronic Modules,” Proceedings of the 17th Optoelectronics and Communications Conference (OECC 2012), July, 2012.

    • Jamshid Sangirov, Ikechi Augustine Ukaegbu, Tae-Woo Lee, Mu Hee Cho and Hyo-Hoon Park, “Short turn-on/off time linear voltage regulator with data detector for power-aware optical interconnect system,” Proceedings of the 17th Optoelectronics and Communications Conference (OECC 2012), July, 2012.

    • Jamshid Sangirov, Ikechi Augustine Ukaegbu, Tae-Woo Lee, Mu Hee Cho and Hyo-Hoon Park, “A Pulse-based Linear Voltage Regulator for Low-power and Low-noise Wireless Sensor Applications,” Proceedings of the 19th Conference on Optoelectronics and Optical Communications (COOC 2012), May, 2012.


     

    2011

    • Ikechi Augustine Ukaegbu, Jamshid Sangirov, Trong-Hieu Ngo, Tae-Woo Lee, and Hyo-Hoon Park, “Design of Simultaneous Bidirectional CMOS Transceiver With a Resistor-Transconductor Hybrid for Optical Chip-to-Chip Interconnects,” SPIE Photonics West, proceedings of SPIE, Vol. 7933, pp. 2N-1-2N-8, San Francisco, California, USA, 22-27 Jan. 2011.

    • Jamshid Sangirov, Ikechi Augustine Ukaegbu, Tae-Woo Lee, Mu-Hee Cho, and Hyo-Hoon Park, “Low power High-Speed SerDes with New Dynamic Latch and Flip-Flop for Optical Interconnect in 180 nm CMOS Technology,” SPIE Photonics West, proceedings of SPIE, Vol. 7944, pp. V-1-V-8San Francisco, California, USA, 22-27 Jan. 2011.

    • Ikechi Augustine Ukaegbu, Tae-Woo Lee, Mu Hee Cho, and Hyo-Hoon Park, “Optoelectronic Subcarrier for Chip-to-Chip Optical Interconnects Using Long Wavelength VCSELs,” proceedings of IEEE/ICACT, pp. 481- 484, Feb. 13-16, 2011.

    • Ikechi Augustine Ukaegbu, Tae-Woo Lee, and Hyo-Hoon Park, “Efficient High-Speed Optoelectronic Interconnects Parameter Extraction Based on 3D Field Simulation,” proceedings of IEEE/ICACT, pp. 244-247, Feb. 13-16, 2011.

    • Ikechi Augustine Ukaegbu, K.-S. Choi, Jamshid Sangirov, T.-W. Lee, and H.-H. Park, “High Inductance LTCC Based Spiral Inductor with Small Area and High Q factor,” proceedings of IEEE/ICACT, pp. 819-823, Feb. 13-16, 2011.


     

    2010

    • Ikechi Augustine Ukaegbu, Mu-Hee Cho, Tae-Woo Lee, and Hyo-Hoon Park, “Analytical Crosstalk Expressions for Optoelectronic Transmitter Modules for OPCB Applications,” Photonics Conference, Seoul, Korea, 1-3 Dec. 2010.

    • Ikechi Augustine Ukaegbu, Mu-Hee Cho, Tae-Woo Lee, and Hyo-Hoon Park, “Crosstalk Analysis of Planar and Multi-chip Transmitter modules for Optical PCB Applications,” Proceedings of COIN 2010, July 11-14, 2010.

    • Olim Hidayov, Ikechi Augustine Ukaegbu, Hakimjon Zaynidinov, and Sang-Gug Lee, “Comparative Analysis of Piecewise-Polynomial of Local Bases,” IEEE/ICACT, Feb. 2010.

    • Jamshid Sangirov, Nga T.H. Nguyen, Trong-Hieu Ngo, Ikechi Augustine Ukaegbu, Tae-Woo Lee, Mu Hee Cho, and Hyo-Hoon Park, “Design of Analog-type High-speed SerDes Using Digital Components for Optical Chip-to-chip Link,” SPIE Photonics West, proceedings of SPIE, Vol. 7607, pp. 1B1- B9, San Jose, USA, 23-28 Jan. 2010.


     

    2009

    • Brownson O. Obele, Augustine I. Ukaegbu, Minho Kang, “On Tackling Free-Riders in P2P Networks,” IEEE/ICACT, Phoenix Park, Korea, 15-18 Feb 2009.

    • Md. S. M. Shirazy, Augustine I. Ukaegbu, D.-W. Kim, T.-W. Lee, and B.-S. Yoo, and H.-H. Park, “A comparative analysis of short- and long-wavelength multi-chip optical transmitter modules for optical PCB’s applications,” SPIE Photonics West, proceedings of SPIE, Vol. 7221, pp. 12-1-12-8, San Jose, USA, 24-29 Jan. 2009. 

    • D.-W. Kim, Md. S. M. Shirazy, Ikechi Augustine Ukaegbu, T.-W. Lee, and B.-S. Yoo, and H.-H. Park, “Comparison of long- and short-wavelength optical transmitters for optical PCB applications,” SPIE Photonics West, Proceedings of SPIE, Vol. 7221, pp. H1-H8, San Jose, USA, 24-29 Jan. 2009.


     

    2007

    • Han Wang, Francisco Rojas, Sang Won Lee, Ikechi Augustine Ukaegbu, “Economics of Intellectual Property for Software and Digital Information” IC-BNMT/ ICT, Beijing, China, Sept. 18-20, 2007.


     

    2006

    • Ikechi Augustine Ukaegbu and Vladimir Nikolaevich Borodulin, “Modern technologies of ferroelectric films for nonvolatile Memory of integrated circuits,” Proceedings of ISTC, Moscow, Russia, 2-3 March, 2006.