Search Results - "Choi, Yunsung"

Optimal Collaborative Spectrum Sharing for a Cognitive Multi-Antenna Relay With Full-Duplex Capability and Stability Constraint by Choi, Yunsung, Kim, Dongwoo

“…Collaborative spectrum sharing (CSS) between primary and secondary users (PU and SU) is an effective way of utilizing limited radio spectrum. In CSS, cognitive…”
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Power Allocation and Dimensioning for Interweaved Primary and Secondary Multicast Networks With Outage Constraints by Choi, Yunsung, Kim, Dongwoo

“…This letter investigates the resource allocation in interweaved primary and secondary multicast networks (PMNs and SMNs, respectively), where an SMN can access…”
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Asymptotic Capacity Allocation for an Out-of-Cell User in Non-Orthogonal Multiple Access With Coordinated Direct and Relay Transmission by Choi, Yunsung, Park, Cheol-Sun, Kim, Dongwoo

“…An out-of-cell user (referred to UE2) is usually required to receive or send signals from or to a base station (BS) that is connected to wider area networks…”
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Impact on Soil Physical Properties Related to a High Mechanization Level in the Row Thinning of a Korean Pine Stand by Baek, Kigwang, Lee, Eunjai, Choi, Hyungtae, Cho, Minjae, Choi, Yunsung, Han, Sangkyun

“…In ground-based harvesting, machine traffic can cause soil physical disturbances including excessive compaction, the displacement of the soil surface and…”
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A Literature Review on Cable Extraction Practices of South Korea: 1990–2020 by Eunjai Lee, Yunsung Choi, Minjae Cho, Koohyun Cho, Jaeheun Oh, Sangkyun Han, Sangjun Im

“…Cable yarding technology remains the most effective operation in steep terrain harvesting systems; however, it has limitations and challenges. Using cable…”
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Quality-supporting duration in vehicle-to-vehicle cooperative communication with a decode-and-forward relaying vehicle by Yunsung Choi, Dongwoo Kim

“…In this paper, we investigate a maximum allowable time that ensure a given outage probability target in vehicle-to vehicle cooperative communication (VVCC)…”
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Optimal Power and Rate Allocation in Superposition Transmission With Successive Noise Signal Sharing Toward Zero Intercept Probability by Choi, Yunsung, Kim, Dongwoo

“…In this letter, we show that superposition transmission (SuT) with optimal power and rate allocation achieves zero intercept probability (IP) without assuming…”
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Secrecy Performance of Two-Level Superposition Transmission in Untrusted Multiuser Wireless Downlink Systems by Choi, Yunsung, Kim, Dongwoo

“…In an untrusted multiuser downlink system (UTMS) where a desired user is opportunistically selected and all the other users are potential eavesdroppers (Eves),…”
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Performance analysis with and without torch node in secure communications by Choi, Yunsung, Kim, Dongwoo

“…In this paper, we present secure communication system with torch nodes. With a channel state information (CSI) between source and eavesdropper, a Alice null…”
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Impact of power control on network-layer stability in cognitive radio systems by Yunsung Choi, Dongwoo Kim

“…In cognitive radio (CR) systems, secondary transmitters (STs) should have etiquette that its transmission is not harmful to primary communication. Limiting…”
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System-level performance evaluation for non-orthogonal multiple access in coordinated direct and relay transmission by Jung-Bin Kim, JunHwan Lee, Dongwoo Kim, Yunsung Choi

“…In this paper, the system-level performance of nonorthogonal multiple access (NOMA) in coordinated direct and relay transmission (CDRT) is investigated…”
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The Effects of the Maternal Health Improvement Project in the Louga Region of Senegal by Ndiaye, Babacar, Thiam, Louis, Ham, Gahee, Choi, Yunsung, Lee, Eunmi, Kang, Kilho, Yang, Youngran

“…Maternal mortality remains a major global health challenge in sub-Saharan Africa. Senegal is one of the countries in the region that lagged behind in reaching…”
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Switching point between full-duplex and half-duplex in cluster-based multicast relaying by Yunsung Choi, Dongwoo Kim

“…This paper provides multicast outage probabilities in cluster-based mulitcast relaying networks with a full-duplex self-interference cancelation system and a…”
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Secure outage performance of zero-forcing beamforming with "torch nodes" by Yunsung Choi, Jihyun Shin, Dongwoo Kim

“…This paper proposes a novel usage of zero-forcing beamforming (ZFB) for secure transmission in multiple-input single-output (MISO) wiretap channels. When using…”
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Quality-supporting duration for dual-hop vehicle-to-vehicle cooperative communications by Yunsung Choi, Dongwoo Kim

“…In this paper, we provide a measure of reliable vehicle-to-vehicle communication, which is referred to quality-supporting duration (QSD). QSD is defined as a…”
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Two-path successive relaying with threshold-based opportunistic zero-forcing beamforming by Dae-Kyo Jeong, Yunsung Choi, Dongwoo Kim

“…Two-path successive relaying scheme is designed to restore the spectral inefficiency due to a half-duplex constraint. When not operating in orthogonal…”
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Simulation Results for Finding Optimal Battery Energy Storage Capacity in Decarbonizing the Power Sector of South Korea by Choi, Yunsung, Kim, Dongwoo

“…This study aims to analyze an optimal energy storage capacity (ESC) according to the different settings of solar and wind power facilities in Korea's power…”
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Outage probability tradeoff between unicast and multicast messages in wireless relay-multicasting networks using superposition coding by Taewon Kim, Yunsung Choi, Dongwoo Kim

“…In this paper, we propose the unicast-multicast balancing protocol which improves the multicast outage probability performance satisfying maximum tolerable…”
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Non-Orthogonal Multiple Access with Coordinated Transmission Aided by Buffers in End User and Relay by Choi, Yunsung, Kim, Dongwoo

“…In this paper, we investigate a buffer-aided nonorthogonal multiple access (NOMA) system with coordinated direct and relay transmission (CDRT), in which the…”
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An Ultra-Wide Bandwidth with Compact Size Implantable Antenna for Health Monitor Microsystem by Nguyen, DucDung, Choi, YunSung, Jang, WonHo, Seo, Chulhun

“…In this study, an ultra-wide bandwidth with compact volume implantable antenna in the applications health monitor microsystem is proposed. A biocompatible,…”
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