C. Lee, T. Kim, I. Bang, and S. H. Chae, ``Multi-agent deep Q-network-based handover optimization for multi-beam LEO satellite networks,'' in Proc. of the 16th Int. Conf. on Ubiquitous and Future Networks (ICUFN), Lisbon, Portugal, Jul. 2025.
Y. Shin, C. Lee, and S. H. Chae, ``Joint beam and power control in multi-beam LEO satellite systems via a modular deep Q-network,'' in Proc. of the 16th Int. Conf. on Ubiquitous and Future Networks (ICUFN), Lisbon, Portugal, Jul. 2025.
J. Park and S. H. Chae, ``Deep learning-based joint pilot location and number optimization for channel estimation in OFDM systems,'' in Proc. of the 16th Int. Conf. on Ubiquitous and Future Networks (ICUFN), Lisbon, Portugal, Jul. 2025.
H. Choi, C. Lee, and S. H. Chae, ``Deep reinforcement learning-based spectrum partitioning and allocation for cellular V2X networks,'' in Proc. of the 16th Int. Conf. on Ubiquitous and Future Networks (ICUFN), Lisbon, Portugal, Jul. 2025.
T. Kim, S. H. Chae, and I. Bang, ``Performance evaluation of two-step random access with message bundling for LEO satellite networks,'' in Proc. of the 16th Int. Conf. on Ubiquitous and Future Networks (ICUFN), Lisbon, Portugal, Jul. 2025.
C. Lee, S. Lee, T. Kim, I. Bang, J. H. Lee, and S. H. Chae, ``Multi-agent deep reinforcement learning-based multi-UAV path planning for wireless data collection and energy transfer,'' in Proc. of the 15th Int. Conf. on Ubiquitous and Future Networks (ICUFN), Budapest, Hungary, Jul. 2024.
M. J. Kang, J. H. Lee, and S. H. Chae, `` Machine learning-based NOMA in LEO satellite communication systems,'' in Proc. of the 15th Int. Conf. on Ubiquitous and Future Networks (ICUFN), Budapest, Hungary, Jul. 2024.
T. Kim, S. H. Chae, and I. Bang, ``Performance evaluation of two-step random access for low-latency communications in 6G,'' in Proc. of the 15th Int. Conf. on Ubiquitous and Future Networks (ICUFN), Budapest, Hungary, Jul. 2024.
I. Bang, S. H. Chae, and T. Kim, ``On the secrecy sum-rate of uplink multiuser networks with potential eavesdroppers,'' in Proc. of the 15th Int. Conf. on Ubiquitous and Future Networks (ICUFN), Budapest, Hungary, Jul. 2024.
I. Bang, S. H. Chae, and T. Kim, ``Artificial noise assisted secure transmission for low earth orbit satellite communications,'' in Proc. of Int. Conf. on Electronics, Information, and Commun. (ICEIC), Taiwan, Jan. 2024.
G. Kim, S. Lee, H. Lim, B. C. Jung, S. H. Chae, ``Coverage probability analysis of LEO satellite communication systems with directional beamforming,'' in Proc. of the 14th Int. Conf. on Ubiquitous and Future Netw. (ICUFN), Paris, France, Jul. 2023.
M. J. Kang, S. H. Chae, J. H. Lee, ``Channel estimation with DnCNN in massive MISO LEO satellite systems,'' in Proc. of the 14th Int. Conf. on Ubiquitous and Future Netw. (ICUFN), Paris, France, Jul. 2023.
Y. Song, H. C. Shin, S. H. Chae, and Y. Kim, "Implementation of internet of maritime things platform in the ocean," in Proc. of 13th Int. Conf. on ICT Convergence (ICTC), Jeju, South Korea, Oct. 2022.
D. Kim, Y. Song, and S. H. Chae, "Secrecy performance of Alamouti-STBC with decision feedback detection in time-selective fading channels,'' in Proc. of 27th Asia-Pacific Conference on Communications (APCC), Jeju, South Korea, Oct. 2022.
S. H. Chae and W. Choi, "Optimal probabilistic caching with wireless caching helpers,'' in Proc. of IEEE Int. Workshop on Signal Processing Advances in Wireless Commun. (SPAWC), Edinburgh, UK, pp. 1-5, Jul. 2016. [Invited Paper]
S. H. Chae, J.-P. Hong, and W. Choi, "Performance enhancement via RAT association control in multi-RAT cellular neworks,'' in Proc. of IEEE Int. Conf. Commun. (ICC), Kuala Lumpur, Malaysia, May 2016.
S. H. Chae, J. Y. Ryu, T. Q. S. Quek, and W. Choi, "Cooperative transmission via caching helpers,'' in Proc. of IEEE Global Commun. Conf. (GLOBECOM), pp. 1-6, San Diego, CA, Dec. 2015.
S. H. Chae, B. C. Jung, and W. Choi, "Achievable degrees-of-freedom of (n,K)-user interference channel with distributed beamforming," in Proc. of IEEE Int. Conf. on Acoustics, Speech, and Signal Processing (ICASSP), pp. 3048-3052, Brisbane, Australia, Apr. 2015.
S. H. Chae, B. C. Jung, and W. Choi, "Achievable degrees-of-freedom by distributed scheduling in an (n,K)-user interference channel," in Proc. of IEEE Int. Conf. Commun. (ICC), pp. 3236-3240, Budapest, Hungary, Jun. 2013.
J. H. Lee, S. H. Chae, and W. Choi, "Opportunistic jammer selection for secure degrees of freedom ,'' in Proc. of IEEE Global Commun. Conf. (GLOBECOM), pp. 4862-4867, Aneheim, CA, Dec. 2012.