This paper addresses packet loss in semantic communication caused by network congestion or channel fluctuations. We propose LGSemCom, a lightweight generative packet-level joint source-channel coding (JSCC) framework for efficient and robust image transmission over packet erasure channels. Unlike conventional distortio...
Yu-Fei Bo, Hao-Shuo Zhang, Mei-Xia Tao et al.· 0 citations
Existing digital semantic communication schemes rely on predefined conventional constellations. Such designs overlook the potential of optimizing constellation geometry for specific semantic tasks. Meanwhile, traditional constellation geometric shaping methods are inadequate for semantics-oriented communication tasks....
Maritime satellite communications (SATCOMs) are expected to support high-capacity ship-to-satellite uplinks for remote maritime services beyond terrestrial coverage, with low-Earth-orbit (LEO) satellites providing wide-area connectivity. However, robust uplink beamforming in LEO maritime SATCOMs is challenging because...