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155 results on '"Seo, Dong-Wook"'

1. SWIPT-enabled NOMA in Distributed Antenna System with Imperfect Channel State Information for Max-Sum-Rate and Max-Min Fairness

Author

Kim, Dongjae, Choi, Minseok, and Seo, Dong-Wook

Subjects
Computer Science - Information Theory, Electrical Engineering and Systems Science - Signal Processing
Abstract

Motivated by the fact that the data rate of non-orthogonal multiple access (NOMA) can be greatly increased with the help of the distributed antenna system (DAS), we presents a framework in which the DAS contributes not only to the data rate but also the energy harvesting of simultaneous wireless information and power transfer (SWIPT) enabled NOMA. This study considers the sum-rate maximization problem and the max-min fairness problem for SWIPT-enabled NOMA in DAS and proposes two different schemes of power splitting and power allocation for SWIPT and NOMA, respectively, with imperfect channel state information (CSI). Numerical results validate the theoretical findings and demonstrate that the proposed framework of using SWIPT-enabled NOMA in DAS achieves the higher data rates than the existing SWIPT-enabled NOMA while guaranteeing the minimum harvested energy., Comment: 5pages, 5figures

Published
2022

5. V2X-Based Vehicular Positioning: Opportunities, Challenges, and Future Directions

Author

Ko, Seung-Woo, Chae, Hyukjin, Han, Kaifeng, Lee, Seungmin, Seo, Dong-Wook, and Huang, Kaibin

Subjects
Computer Science - Information Theory, Computer Science - Networking and Internet Architecture
Abstract

Vehicle-to-Everything (V2X) will create many new opportunities in the area of wireless communications, while its feasibility on enabling vehicular positioning has not been explored yet. Vehicular positioning is a crucial operation for autonomous driving. Its complexity and stringent safety requirement render conventional technologies like RADAR and LIDAR inadequate. This article aims at investigating whether V2X can help vehicular positioning from different perspectives. We first explain V2X's critical advantages over other approaches and suggest new scenarios of V2X-based vehicular positioning. Then we review the state-of-the-art positioning techniques discussed in the ongoing 3GPP standardization and point out their limitations. Lastly, some promising research directions for V2X-based vehicular positioning are presented, which shed light on realizing fully autonomous driving by overcoming the current barriers., Comment: This work has been submitted to the IEEE for possible publication

Published
2019

16. Auto-surveillance for Object to Bring In/Out Using Multiple Camera

Author

Kim, Taeho, Seo, Dong-Wook, Chae, Hyun-Uk, Jo, Kang-Hyun, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Huang, De-Shuang, editor, Jo, Kang-Hyun, editor, Lee, Hong-Hee, editor, Kang, Hee-Jun, editor, and Bevilacqua, Vitoantonio, editor

Published
2009
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50. Corruption and Corporate Cash Holdings.

Author

Seo, Dong Wook and Han, Seung Hun

Subjects
CORPORATE corruption, CASH position of corporations, ECONOMIC development, CORRUPTION, ECONOMIC policy
Abstract

In this study, we examine the relation between corruption and corporate cash holding policy using data from 35,288 firms in 44 countries. The results indicate a non-linear relation between corruption and corporate cash holdings with a negative coefficient of the cubic term of corruption. Specifically, in developed (frontier) countries with low (high) level of corruption, we find a negative relation, whereas in emerging countries with moderate level of economic development and corruption, we find a positive relation. Thus, we suggest that corruption is an important variable that affects corporate cash holding policy by the level of economic development. [ABSTRACT FROM AUTHOR]

Published
2022
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