▸N. M. Tran, M. Miftahul Amri, J. H. Park, D. In Kim and K. W. Choi, "Beam Scanning Methods for Multi-Antenna Wireless Power Transfer with Reconfigurable Intelligent Surface," 2021 IEEE 22nd International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), Italy, Sept. 2021, pp. 626-630, doi: 10.1109/SPAWC51858.2021.9593106.▸N. M. Tran, M. M. Amri, J. H. Park, D. I. Kim and K. W. Choi, "Multi-Device Charging RIS-Aided Wireless Power Transfer Systems," 2021 International Conference on Information and Communication Technology Convergence (ICTC), Korea, Oct. 2021, pp. 839-844, doi: 10.1109/ICTC52510.2021.9620910.▸윤현식, 최계원 (2021). "완전 분산형 User-Centric CF MIMO를 위한 프리코딩 기법", 한국통신학회 학술대회논문집, 433-434.▸이유진, 손하영, 최계원, 이순교, 박재현 (2021). "항만 CCTV 영상을 이용한 딥러닝 기반의 객체 검출", 한국통신학회 학술대회논문집, 796-797.▸박종인, 김건우, 김지수, 최계원 (2021). "강화학습을 활용한 다중 스펙트럼 채널 접근 기술에 대한 연구" 대한전자공학회 학술대회, 2375-2376.▸손하영, 이상원, 최계원 (2021). "레이더 데이터를 이용한 YOLO 기반 3차원 Object Detection" 한국통신학회 학술대회논문집, 224-225.▸하명찬, 최계원 (2021). "SDR 기반 Cell-Free MIMO 테스트베드 개발." 한국통신학회 학술대회논문집, 36-37.▸M. M. Amri, N. M. Tran, D. I. Kim, and K. W. Choi(2021). Sparsity-Aware Channel Estimation for IRS-Based Wireless Communication. JCCI 2021(제 31회 통신정보 합동학술대회)▸N. M. Tran, M. M. Amri, J. H. Park, D. I. Kim, and K. W. Choi(2021). Multi-Tile IRS-Based Wireless Power Transfer Scheme. JCCI 2021(제 31회 통신정보 합동학술대회)▸박제현, 최계원(2020). Study on the RF wireless power transfer between phased array transmitter and multi-rectenna receiver. 대한전자공학회 추계학술대회 논문집Study on the RF wireless power transfer between phased array transmitter and multi-rectenna receiver▸김건우, 김지수, 박종인, 최계원(2020). 강화학습을 이용한 주파수 공유 알고리즘 개발. 한국전자파학회 하계종합학술대회 논문집 Vol. 8, No.1, 19~22강화학습을 이용한 주파수 공유 알고리즘 개발▸윤현식, 조동근, 최계원 (2020). 복잡한 초고주파 대역 통신시스템의 효율적인 빔 합성을 위한 최적화 방법. 한국통신학회 학술대회논문집, 504-505복잡한 초고주파 대역 통신시스템의 효율적인 빔 합성을 위한 최적화 방법▸하명찬, 최계원 (2020). USRP 를 통한 문자메세지 무선통신에 관한 연구. 한국통신학회 학술대회논문집, 800-801USRP 를 통한 문자메세지 무선통신에 관한 연구▸김지수, 최계원 (2020). 비발디 안테나를 이용한 손동작 감지. 한국통신학회 학술대회논문집, 1014-1015비발디 안테나를 이용한 손동작 감지▸윤현식, 이미현, 손하영, 최계원 (2020). 초고밀도 무선 네트워크 성능 평가를 위한 레이트레이싱 시뮬레이터. 한국통 신학회 학술대회논문집, 146-147.초고밀도 무선 네트워크 성능 평가를 위한 레이트레이싱 시뮬레이터▸N. M. Tran et al., "Demo: Demonstration of Reconfigurable Metasurface for Wireless Communications," 2020 IEEE Wireless Communications and Networking Conference Workshops (WCNCW), Seoul, Korea (South), 2020, pp. 1-2, doi: 10.1109/WCNCW48565.2020.9124824.Demo Demonstration of Reconfigurable Metasurface for Wireless Communications▸J. H. Park, D. In Kim and K. W. Choi, "Experiments and Modeling of 5.8GHz Microwave Wireless Power Transfer with Multiple Antennas," 2020 IEEE Wireless Power Transfer Conference (WPTC), Seoul, Korea (South), 2020, pp. 115-118, doi: 10.1109/WPTC48563.2020.9295530.Experiments and Modeling of 5.8GHz Microwave Wireless Power Transfer with Multiple Antennas▸M. M. Amri, N. M. Tran, J. H. Park, D. I. Kim and K. W. Choi, "A Programmable Binary Metasurface for Wireless Power Transfer Application," 2020 IEEE Wireless Power Transfer Conference (WPTC), Seoul, Korea (South), 2020, pp. 334-337, doi: 10.1109/WPTC48563.2020.9295606.A Programmable Binary Metasurface for Wireless Power Transfer Application▸박제현, 최계원, "Prediction of Power Transfer Efficiency of Multi-Antenna to Multi-Antenna Long-Range RF-Based Wireless Power Transfer System," 대한전자공학회 하계종합학술발표회, Korea, Jun. 2019.▸황사일, 최계원, "Design and Experiment of DC-Biased OFDM-Based Simultaneous Wireless Information and Power Transfer," 한국통신학회 하계종합학술발표회, Korea, Jun. 2019.▸조동근, 윤현식, 최계원, "밀리미터 웨이브 통신시스템에서의 효율적인 빔 합성을 위한 최적화 방법," 한국통신학회 하계종합학술발표회, Korea, Jun. 2019.▸연규양, 최계원, "RF 무선 전력 전송을 통한 저전력 카메라 시스템," 한국통신학회 하계종합학술발표회, Korea, Jun. 2019.▸박제현, 최계원, "Development of 5.8GHz Microwave Wireless Power Transfer System," 한국통신학회 하계종합학술발표회, Korea, Jun. 2019.▸장현호, 최계원, 김동인, "FSS SWIPT 방법의 PAPR 특성 분석," 한국통신학회 하계종합학술발표회, Korea, Jun. 2019.▸김지수, 최계원, "비콘을 이용한 실내 내비게이션," 한국통신학회 하계종합학술발표회, Korea, Jun. 2019.▸J. H. Park and K. W. Choi, "Phased Antenna Array-based Single Anchor Location Tracking System," 한국통신학회 동계종합학술발표회, Korea, Jan. 2019.▸D. S. Kang and K. W. Choi, "Development of SDR Testbed for Ultra-Dense Networks," 한국통신학회 동계종합학술발표회, Korea, Jan. 2019.▸S. I. Hwang, D. Setiawan and K. W. Choi, "Battery-Less location tracking for Internet of Things Devices : Simultaneous Wireless Power Transfer," 한국통신학회 하계종합학술발표회, Korea, Jun. 2018.▸J. H. Park, L. Ginting, A. A. Aziz, D. Setiawan and K. W. Choi, "Research for Long Range Wireless-Powerd Sensor Network," 한국통신학회 하계종합학술발표회, Korea, Jun. 2018.▸K. D. Soo, P. Y. S. Manguntang and K. W. Choi, "A Study on the VLC physical layer and Beaglebone Black PRU module systems," 한국통신학회 하계종합학술발표회, Korea, Jun. 2018.▸J. H. Park, A. A. Aziz, L. Ginting, and K. W. Choi, “Experiments on low power RF-powered sensor networks,” 한국전자파학회 하계학술대회, Jeju, Korea, Aug. 2018.▸A. A. Aziz, J. W. Woo, D. I. Kim, and K. W. Choi, “A novel receiver architecture for simultaneous wireless information and power transfer,” in Proc. JCCI 2018, Yeosu, Korea, Jun. 2018.▸N. M. Tran, D. I. Kim, and K. W. Choi, “Beam focusing analysis of phased antenna array-based RF wireless power transfer system,” in Proc. JCCI 2018, Yeosu, Korea, Jun. 2018.▸Y. S. Pratama and K. W. Choi, “Bandwidth aggregation protocol for hybrid VLC and RF communications system,” in Proc. ACM CoNEXT Student Workshop 2017, Incheon, Korea, Dec. 2017.▸K. W. Choi, L. Ginting, D. Setiawan, A. A. Aziz, and D. I. Kim, “Coverage probability of distributed wireless power transfer system,” in Proc. ICUFN 2017, Milan, Italy, Jul. 2017.▸F. A. Kusuma and K. W. Choi, “CoreSim: 셀룰러 코어 네트워크 성능 측정 위한 자동온라인 시뮬레이션 시스템,” 대한전자공학회 하계학술대회, Pusan, Korea, Jun. 2017.▸K. W. Choi, L. Ginting, D. Setiawan, and D. I. Kim, “An experimental study on distributed wireless power transfer system,” 한국통신학회 하계학술대회, Jeju, Korea, Jun. 2017.▸K. W. Choi, P. A. Rosyady, L. Ginting, A. A. Aziz, and D. I. Kim, “Simultaneously charging multiple sensor nodes in multi-antenna wireless-powered sensor networks,” in Proc. IEEE ICC 2017, Paris, France, Jun. 2017.▸D. Setiawan, A. A. Aziz, D. I. Kim, and K. W. Choi, “Experiment and modeling of wireless-powered sensor network,” in Proc. IEEE WCNC Workshops 2017, San Francisco, CA, May 2017.▸K. W. Choi, P. A. Rosyady, L. Gineing, A. A. Aziz, and D. I. Kim, “Multi-Node Receive Power Region of Wireless-Powered Sensor Networks,” in Proc. JCCI 2017, Pusan, Korea, Apr. 2017.▸Aneta and K. W. Choi, “MPTCP optimization for LTE-WiFi bandwidth aggregation,” 한국전자파학회 하계학술대회, Jeju, Korea, Aug. 2015.▸E. Zihan and K. W. Choi, “Random access protocol for collision avoidance in cellular device-to-device communication,” in Proc. ICC 2014, Sydney, Australia, Jun. 2014.▸K. W. Choi, Hyun Lee, Sung Cheol Chang, “Discovering mobile applications for device-to-device communication: hash function-based approach,” in Proc. IEEE VTC 2014-Spring, Seoul, Korea, May 2014.▸D. Tribudi and K. W. Choi, “Joint random access channel allocation and load control for machine-to-machine communications in cellular networks”, in Proc. IFAC TA 2013, Seoul, Korea, Nov. 2013.▸E. Zihan and K. W. Choi, “Random access-based device-to-device discovery scheme for proximity-based service in LTE-Advanced system,” in Proc. APWCS 2013, Seoul, Korea, Aug. 2013.▸B. Shresta, E. Hossain, K. W. Choi, “An analysis of wireless backhaul for picocell base stations in heterogeneous networks,” in Proc. IEEE GLOBECOM 2013, Atlanta, GA, Dec. 2013.▸D. H. Lee, K. W. Choi, W. S. Jeon, and D. G. Jeong, “Resource allocation scheme for device-to-device communication for maximizing spatial reuse,” in Proc. IEEE WCNC 2013, Shanghai, China, Apr. 2013.▸K. M. Thilina, K. W. Choi, N. Saquib, and E. Hossain, “Pattern classification techniques for cooperative spectrum sensing in cognitive radio networks: SVM and W-KNN approaches,” in Proc. IEEE GLOBECOM 2012, Anaheim, CA, Dec. 2012.▸K. W. Choi, D. H. Lee, W. S. Jeon, and D. G. Jeong, “Group-based control scheme for machine type device-to-device communication,” in Proc. APWCS 2012, Kyoto, Japan, Aug. 2012.▸P. Phunchongharn, E. Hossain, K. W. Choi, and S. Camorlinga, “Robust transmission scheduling and power control for spectrum sharing in spatial reuse TDMA wireless networks,” in Proc. IEEE GLOBECOM 2011, Houston, TX, Dec. 2011.▸B. Shresta, E. Hossain, K. W. Choi, and S. Camorlinga, “A Markov decision process (MDP)-based congestion-aware medium access strategy for IEEE 802.15.4,” in Proc. IEEE GLOBECOM 2011, Houston, TX, Dec. 2011.▸K. W. Choi, D. G. Jeong, and W. S. Jeon, “Opportunistic cooperative communication,” in Proc. IEEE VTS APWCS 2007, Hsinchu, Taiwan, Aug. 2007.▸K. W. Choi, D. G. Jeong, and W. S. Jeon, “Generalized packet scheduler for wireless and mobile multimedia communications systems,” in Proc. IEEE VTC 2005-Fall, Dallas, TX, Sept. 2005, pp. 1584 – 1588.▸K. W. Choi, W. S. Jeon, and D. G. Jeong, “Packet scheduler for mobile communications systems with time-varying capacity region,” in Proc. IEEE VTC 2005-Spring, Stockholm, Sweden, May 2005, pp. 1925 – 1929.▸K. W. Choi, W. S. Jeon, and D. G. Jeong, “TCP performance analysis in wireless transmission using AMC,” in Proc. IEEE VTC 2003-Spring, Jeju, Korea, Apr. 2003, pp. 611 – 615.
