J
Ji-sung Oh
Researcher at Samsung
Publications - 42
Citations - 763
Ji-sung Oh is an academic researcher from Samsung. The author has contributed to research in topics: Beamforming & Orthogonal frequency-division multiplexing. The author has an hindex of 15, co-authored 42 publications receiving 746 citations. Previous affiliations of Ji-sung Oh include Seoul National University & Stanford University.
Papers
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Journal ArticleDOI
A 60 GHz wireless network for enabling uncompressed video communication
TL;DR: Simulations using real uncompressed HD images indicate that the proposed mmWave system can maintain, under poor channel conditions, good average peak-signal-to-noise-ratio and low video quality metric scores.
Proceedings ArticleDOI
A practical SDMA protocol for 60 GHz millimeter wave communications
TL;DR: An iterative antenna training protocol is developed, where the optimal transmit/ receive beamforming vectors are computed without explicit knowledge of the actual wireless channels.
Proceedings ArticleDOI
Short Range Gigabit Wireless Communications Systems: Potentials, Challenges and Techniques
Pengfei Xia,Xiangping Qin,Huaning Niu,Harkirat Singh,Huai-Rong Shao,Ji-sung Oh,Chang Yeul Kweon,Seong-Soo Kim,Su Khiong Yong,Chiu Ngo +9 more
TL;DR: The challenges in three different layers: PHY, MAC and the application layers are discussed, including antenna array beamforming, baseband modulation, data aggregation and the worldwide 60GHz regulatory and the ongoing standardization efforts are reviewed.
Proceedings ArticleDOI
Multi-Stage Iterative Antenna Training for Millimeter Wave Communications
TL;DR: A multi-stage iterative method in training the antenna coefficients is proposed, which is especially efficient for systems with a much smaller number of RF chains relative to the number of antennas on both transmitter and receiver sides.
Patent
Method and apparatus for wireless communication in high-frequency band
TL;DR: In this paper, a beacon packet is provided that includes a first information field that includes channel-time-allocation information in a wireless network; and information about whether there is residual channel time that can be allocated to a device that belongs to the wireless network.