We are recruiting a couple of highly self-motivated graduate students who will work on Internet-of-Things (IoT) systems. Please, feel free to contact Prof. Kae-Won Choi (email: kaewonchoi@skku.edu) for more information.
Conference
2023
international
Hierarchical Transformer for Brain Computer Interface
Permana Deny, Kae Won Choi
2023 11th International Winter Conference on Brain-Computer Interface (BCI), doi: 10.1109/BCI57258.2023.10078473
Link
2023
domestic
SPRT를 이용한 MI 분류 모델의 정확도에 관한 연구
조준희, 최계원
한국통신학회 동계종합학술대회, 2023년도 한국통신학회 동계종합학술발표회 논문집, 1049-1050
2023
domestic
잠재 공간에서 Belief State를 이용해 미래 상태를 예측하는 모델 기반 강화학습에 관한 연구
권세이, 최계원
한국통신학회 동계종합학술대회, 2023년도 한국통신학회 동계종합학술발표회 논문집, 1374-1375
2023
domestic
AFC기반 다중 스펙트럼 채널 접근을 위한 강화학습 알고리즘 비교
채준병, 박종인, 최계원
한국통신학회 동계종합학술대회, 2023년도 한국통신학회 동계종합학술발표회 논문집, 1428-1429
2023
domestic
A Study on Graph Transformer-based Network for Brain-Computer Interface
Permana Deny, K. W. Choi
한국통신학회 동계종합학술대회, 2023년도 한국통신학회 동계종합학술발표회 논문집, 469-470
2022
international
Model-Based Reinforcement Learning for Wireless Channel Access
Jong In Park, Kae Won Choi
2022 13th International Conference on Information and Communication Technology Convergence (ICTC), doi: 10.1109/ICTC55196.2022.9952476
Link
2022
international
Beam Splitting Technique for Reconfigurable Intelligent Surface-Aided Simultaneous Wireless Information and Power Transfer Applications
Nguyen Minh Tran, Muhammad Miftahul Amri, Je Hyeon Park, Ghafar Ramadhan Faqih, Dong In Kim, Kae Won Choi
2022 IEEE Information Theory Workshop (ITW), doi: 10.1109/ITW54588.2022.9965797
Link
2022
international
Demo: Demonstration of Reconfigurable Intelligent Surface (RIS)-assisted Simultaneous Wireless Information and Power Transfer (SWIPT)
Muhammad Miftahul Amri, Nguyen Minh Tran, Je Hyeon Park, Dong In Kim, Kae Won Choi
IEEE ICC 2022, ICC Workshops, doi: 10.1109/ICCWorkshops53468.2022.9915029
Link
2022
international
Demo: SDR Implementation of a Fully Distributed Cell-Free MIMO System
Mi Hyun Lee, Myeong Chan Ha, Hyun Sik Yoon, Chae Won Yun, Chang Wahn Yu, Kae Won Choi
IEEE ICC 2022, ICC Workshops, doi: 10.1109/ICCWorkshops53468.2022.9915020
Link
2022
domestic
Label Smoothing 위한 Motor Imagery 디코딩 연구
Permana Deny, K. W. Choi
한국통신학회 동계종합학술대회, 2022년도 한국통신학회 동계종합학술발표회 논문집, 1513-1513
2021
international
Beam Scanning Methods for Multi-Antenna Wireless Power Transfer with Reconfigurable Intelligent Surface
N. M. Tran, M. Miftahul Amri, J. H. Park, D. In Kim and K. W. Choi
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.
Link
2021
international
Multi-Device Charging RIS-Aided Wireless Power Transfer Systems
N. M. Tran, M. M. Amri, J. H. Park, D. I. Kim and K. W. Choi
2021 International Conference on Information and Communication Technology Convergence (ICTC), Korea, Oct. 2021, pp. 839-844, doi: 10.1109/ICTC52510.2021.9620910.
2021
domestic
완전 분산형 User-Centric CF MIMO를 위한 프리코딩 기법
윤현식, 최계원
한국통신학회 학술대회논문집, 2021, 433-434.
2021
domestic
항만 CCTV 영상을 이용한 딥러닝 기반의 객체 검출
이유진, 손하영, 최계원, 이순교, 박재현
한국통신학회 학술대회논문집, 2021, 796-797.
2021
domestic
강화학습을 활용한 다중 스펙트럼 채널 접근 기술에 대한 연구
박종인, 김건우, 김지수, 최계원
대한전자공학회 학술대회, 2021, 2375-2376.
2021
domestic
레이더 데이터를 이용한 YOLO 기반 3차원 Object Detection
손하영, 이상원, 최계원
한국통신학회 학술대회논문집, 2021, 224-225.
2021
domestic
SDR 기반 Cell-Free MIMO 테스트베드 개발
하명찬, 최계원
한국통신학회 학술대회논문집, 2021, 36-37.
2021
domestic
Sparsity-Aware Channel Estimation for IRS-Based Wireless Communication
M. M. Amri, N. M. Tran, D. I. Kim, and K. W. Choi
제 31회 통신정보 합동학술대회, 2021, JCCI.
2021
domestic
Multi-Tile IRS-Based Wireless Power Transfer Scheme
N. M. Tran, M. M. Amri, J. H. Park, D. I. Kim, and K. W. Choi
제 31회 통신정보 합동학술대회, 2021, JCCI.
2020
domestic
Study on the RF wireless power transfer between phased array transmitter and multi-rectenna receiver
박제현, 최계원
대한전자공학회 추계학술대회 논문집, 2020
2020
domestic
강화학습을 이용한 주파수 공유 알고리즘 개발
김건우, 김지수, 박종인, 최계원
한국전자파학회 하계종합학술대회 논문집, 2020, Vol. 8, No.1, 19~22
2020
domestic
복잡한 초고주파 대역 통신시스템의 효율적인 빔 합성을 위한 최적화 방법
윤현식, 조동근, 최계원
한국통신학회 학술대회논문집, 2020, 504-505
2020
domestic
USRP 를 통한 문자메세지 무선통신에 관한 연구
하명찬, 최계원
한국통신학회 학술대회논문집, 2020, 800-801
2020
domestic
비발디 안테나를 이용한 손동작 감지
김지수, 최계원
한국통신학회 학술대회논문집, 2020, 1014-1015
2020
domestic
초고밀도 무선 네트워크 성능 평가를 위한 레이트레이싱 시뮬레이터
윤현식, 이미현, 손하영, 최계원
한국통신학회 학술대회논문집, 2020, 146-147
2020
international
Demo: Demonstration of Reconfigurable Metasurface for Wireless Communications
Nguyen Minh Tran, Muhammad Miftahul Amri, Dong Soo Kang, Je Hyeon Park, Mi Hyun Lee, Dong In Kim, Kae Won Choi
2020 IEEE Wireless Communications and Networking Conference Workshops (WCNCW), Seoul, Korea (South), 2020, pp. 1-2, doi: 10.1109/WCNCW48565.2020.9124824.
Link
2020
international
Experiments and Modeling of 5.8GHz Microwave Wireless Power Transfer with Multiple Antennas
J. H. Park, D. In Kim and K. W. Choi
2020 IEEE Wireless Power Transfer Conference (WPTC), Seoul, Korea (South), 2020, pp. 115-118, doi: 10.1109/WPTC48563.2020.9295530.
Link
2020
international
A Programmable Binary Metasurface for Wireless Power Transfer Application
M. M. Amri, N. M. Tran, J. H. Park, D. I. Kim and K. W. Choi
2020 IEEE Wireless Power Transfer Conference (WPTC), Seoul, Korea (South), 2020, pp. 334-337, doi: 10.1109/WPTC48563.2020.9295606
Link
2019
domestic
Prediction of Power Transfer Efficiency of Multi-Antenna to Multi-Antenna Long-Range RF-Based Wireless Power Transfer System
박제현, 최계원
대한전자공학회 하계종합학술발표회, 2019, Jun
2019
domestic
Design and Experiment of DC-Biased OFDM-Based Simultaneous Wireless Information and Power Transfer
황사일, 최계원
한국통신학회 하계종합학술발표회, 2019, Jun
2019
domestic
밀리미터 웨이브 통신시스템에서의 효율적인 빔 합성을 위한 최적화 방법
조동근, 윤현식, 최계원
한국통신학회 하계종합학술발표회, 2019, Jun
2019
domestic
RF 무선 전력 전송을 통한 저전력 카메라 시스템
연규양, 최계원
한국통신학회 하계종합학술발표회, 2019, Jun
2019
domestic
Development of 5.8GHz Microwave Wireless Power Transfer System
박제현, 최계원
한국통신학회 하계종합학술발표회, 2019, Jun
2019
domestic
FSS SWIPT 방법의 PAPR 특성 분석
장현호, 최계원, 김동인
한국통신학회 하계종합학술발표회, 2019, Jun
2019
domestic
비콘을 이용한 실내 내비게이션
김지수, 최계원
한국통신학회 하계종합학술발표회, 2019, Jun
2019
domestic
Phased Antenna Array-based Single Anchor Location Tracking System
J. H. Park and K. W. Choi
한국통신학회 동계종합학술발표회, 2019, Jan
2019
domestic
Development of SDR Testbed for Ultra-Dense Networks
D. S. Kang and K. W. Choi
한국통신학회 동계종합학술발표회, 2019, Jan
2018
domestic
Battery-Less location tracking for Internet of Things Devices : Simultaneous Wireless Power Transfer
S. I. Hwang, D. Setiawan and K. W. Choi
한국통신학회 하계종합학술발표회, 2018, Jun
2018
domestic
Research for Long Range Wireless-Powerd Sensor Network
J. H. Park, L. Ginting, A. A. Aziz, D. Setiawan and K. W. Choi
한국통신학회 하계종합학술발표회, 2018, Jun
2018
domestic
A Study on the VLC physical layer and Beaglebone Black PRU module systems
K. D. Soo, P. Y. S. Manguntang and K. W. Choi
한국통신학회 하계종합학술발표회, 2018, Jun
2018
domestic
Experiments on low power RF-powered sensor networks
J. H. Park, A. A. Aziz, L. Ginting, and K. W. Choi
한국전자파학회 하계학술대회, Jeju, Korea, Aug. 2018
2018
domestic
A novel receiver architecture for simultaneous wireless information and power transfer
A. A. Aziz, J. W. Woo, D. I. Kim, and K. W. Choi
JCCI 2018, Yeosu, Korea, Jun. 2018
2018
domestic
Beam focusing analysis of phased antenna array-based RF wireless power transfer system
N. M. Tran, D. I. Kim, and K. W. Choi
JCCI 2018, Yeosu, Korea, Jun. 2018
2017
international
Bandwidth aggregation protocol for hybrid VLC and RF communications system
Y. S. Pratama and K. W. Choi
ACM CoNEXT Student Workshop 2017, Incheon, Korea, Dec. 2017, doi: 10.1109/ACCESS.2018.2844874
Link
2017
international
Coverage probability of distributed wireless power transfer system
K. W. Choi, L. Ginting, D. Setiawan, A. A. Aziz, and D. I. Kim
ICUFN 2017, Milan, Italy, 2017, Jul, doi: 10.1109/ICUFN.2017.7993879
Link
2017
domestic
CoreSim: 셀룰러 코어 네트워크 성능 측정 위한 자동온라인 시뮬레이션 시스템
F. A. Kusuma and K. W. Choi
대한전자공학회 하계학술대회, Pusan, Korea, Jun. 2017
2017
domestic
An experimental study on distributed wireless power transfer system
K. W. Choi, L. Ginting, D. Setiawan, and D. I. Kim
한국통신학회 하계학술대회, Jeju, Korea, Jun. 2017
2017
international
Simultaneously charging multiple sensor nodes in multi-antenna wireless-powered sensor networks
K. W. Choi, P. A. Rosyady, L. Ginting, A. A. Aziz, and D. I. Kim
IEEE ICC 2017, Paris, France, Jun. 2017, doi: 10.1109/ICCW.2017.7962684
Link
2017
international
Experiment and modeling of wireless-powered sensor network
D. Setiawan, A. A. Aziz, D. I. Kim, and K. W. Choi
IEEE WCNC Workshops 2017, San Francisco, CA, May 2017, doi: 10.1109/WCNCW.2017.7919071
Link
2017
domestic
Multi-Node Receive Power Region of Wireless-Powered Sensor Networks
K. W. Choi, P. A. Rosyady, L. Gineing, A. A. Aziz, and D. I. Kim
JCCI 2017, Pusan, Korea, Apr. 2017
2015
domestic
MPTCP optimization for LTE-WiFi bandwidth aggregation
Aneta and K. W. Choi
한국전자파학회 하계학술대회, Jeju, Korea, Aug. 2015
2014
international
Random access protocol for collision avoidance in cellular device-to-device communication
E. Zihan and K. W. Choi
ICC 2014, Sydney, Australia, Jun. 2014, doi: 10.1109/ICC.2014.6883677
Link
2014
international
Discovering mobile applications for device-to-device communication: hash function-based approach
K. W. Choi, Hyun Lee, Sung Cheol Chang
IEEE VTC 2014-Spring, Seoul, Korea, May 2014, doi: 10.1109/VTCSpring.2014.7022881
Link
2013
international
Joint random access channel allocation and load control for machine-to-machine communications in cellular networks
D. Tribudi and K. W. Choi
IFAC TA 2013, Seoul, Korea, Nov. 2013, doi: 10.1109/TWC.2014.2328491
Link
2013
international
Random access-based device-to-device discovery scheme for proximity-based service in LTE-Advanced system
E. Zihan and K. W. Choi
APWCS 2013, Seoul, Korea, Aug. 2013
2013
international
An analysis of wireless backhaul for picocell base stations in heterogeneous networks
B. Shresta, E. Hossain, K. W. Choi
IEEE GLOBECOM 2013, Atlanta, GA, Dec. 2013, doi: 10.1109/GLOCOMW.2013.6855731
Link
2013
international
Resource allocation scheme for device-to-device communication for maximizing spatial reuse
D. H. Lee, K. W. Choi, W. S. Jeon, and D. G. Jeong
IEEE WCNC 2013, Shanghai, China, Apr. 2013, doi: 10.1109/WCNC.2013.6554548
Link
2012
international
Pattern classification techniques for cooperative spectrum sensing in cognitive radio networks: SVM and W-KNN approaches
K. M. Thilina, K. W. Choi, N. Saquib, and E. Hossain
IEEE GLOBECOM 2012, Anaheim, CA, Dec. 2012, doi: 10.1109/GLOCOM.2012.6503286
Link
2012
international
Group-based control scheme for machine type device-to-device communication
K. W. Choi, D. H. Lee, W. S. Jeon, and D. G. Jeong
APWCS 2012, Kyoto, Japan, Aug. 2012
2011
international
Robust transmission scheduling and power control for spectrum sharing in spatial reuse TDMA wireless networks
P. Phunchongharn, E. Hossain, K. W. Choi, and S. Camorlinga
IEEE GLOBECOM 2011, Houston, TX, Dec. 2011, doi: 10.1109/GLOCOM.2011.6133661
Link
2011
international
A Markov decision process (MDP)-based congestion-aware medium access strategy for IEEE 802.15.4
B. Shresta, E. Hossain, K. W. Choi, and S. Camorlinga
IEEE GLOBECOM 2011, Houston, TX, Dec. 2011
2007
international
Opportunistic cooperative communication
K. W. Choi, D. G. Jeong, and W. S. Jeon
IEEE VTS APWCS 2007, Hsinchu, Taiwan, Aug. 2007
2005
international
Generalized packet scheduler for wireless and mobile multimedia communications systems
K. W. Choi, D. G. Jeong, and W. S. Jeon
IEEE VTC 2005-Fall, Dallas, TX, Sept. 2005, pp. 1584 – 1588, doi: 10.1109/VETECF.2005.1558208
Link
2005
international
Packet scheduler for mobile communications systems with time-varying capacity region
K. W. Choi, W. S. Jeon, and D. G. Jeong
IEEE VTC 2005-Spring, Stockholm, Sweden, May 2005, pp. 1925 – 1929, doi: 10.1109/VETECS.2005.1543658
Link
2003
international
TCP performance analysis in wireless transmission using AMC
K. W. Choi, W. S. Jeon, and D. G. Jeong
IEEE VTC 2003-Spring, Jeju, Korea, Apr. 2003, pp. 611 – 615, doi: 10.1109/VETECS.2003.1207615
Link