5 papers
Beam-Hopping Pattern Design for Grant-Free Random Access in LEO Satellite Communications
Seunghyeon Jeon, Seonjung Kim, Gyeongrae Im +1
Increasing demand for massive device connectivity in underserved regions drives the development of advanced low Earth orbit (LEO) satellite communication systems. Beam-hopping LEO…
Unequal Error Protection for Digital Semantic Communication with Channel Coding
Seonjung Kim, Yongjeong Oh, Yongjune Kim +2
This paper investigates unequal error protection (UEP) in digital semantic communication, where semantically important bits require substantially higher reliability than less criti…
Prior-Aware Robust Beam Alignment for Low-SNR Millimeter-Wave Communications
Jihun Park, Yongjeong Oh, Jaewon Yun +2
This paper presents a robust beam alignment technique for millimeter-wave communications in low signal-to-noise ratio (SNR) environments. The core strategy of our technique is to r…
Joint Source-Channel Coding for Channel-Adaptive Digital Semantic Communications
Joohyuk Park, Yongjeong Oh, Seonjung Kim +1
In this paper, we propose a novel joint source-channel coding (JSCC) approach for channel-adaptive digital semantic communications. In semantic communication systems with digital m…
SplitMAC: Wireless Split Learning over Multiple Access Channels
Seonjung Kim, Yongjeong Oh, Yo-Seb Jeon
This paper presents a novel split learning (SL) framework, referred to as SplitMAC, which reduces the latency of SL by leveraging simultaneous uplink transmission over multiple acc…