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20232026
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cs.IT2026

Spatial Semantic Communication: When Semantic Transmission Meets Index Modulation

Xinghao Guo, Yin Xu, Dazhi He +5

Current digital semantic communication systems have primarily focused on maintaining compatibility with conventional constellation-based modulation. In contrast, index modulation (…

cs.IT2025

Fluid Antenna-Empowered Receive Spatial Modulation

Xinghao Guo, Yin Xu, Dazhi He +6

Fluid antenna (FA), as an emerging antenna technology, fully exploits spatial diversity. This paper integrates FA with the receive spatial modulation (RSM) scheme and proposes a no…

cs.IT2025

A Contemporary Survey on Fluid Antenna Systems: Fundamentals and Networking Perspectives

Hanjiang Hong, Kai-Kit Wong, Hao Xu +8

The explosive growth of teletraffic, fueled by the convergence of cyber-physical systems and data-intensive applications, such as the Internet of Things (IoT), autonomous systems,…

cs.IT2025

Fluid Antenna-Aided Robust Secure Transmission for RSMA-ISAC Systems

Cixiao Zhang, Yin Xu, Size Peng +5

This paper leverages fluid antenna (FA) and rate-splitting multiple access (RSMA) to enhance the physical layer security (PLS) of an integrated sensing and communication (ISAC) sys…

cs.IT2024

Fluid Antenna Index Modulation for MIMO Systems: Robust Transmission and Low-Complexity Detection

Xinghao Guo, Yin Xu, Dazhi He +5

The fluid antenna (FA) index modulation (IM)-enabled multiple-input multiple-output (MIMO) system, referred to as FA-IM, significantly enhances spectral efficiency (SE) compared to…

cs.IT2024

Sum Rate Maximization for Movable Antenna-Aided Downlink RSMA Systems

Cixiao Zhang, Size Peng, Yin Xu +5

Rate splitting multiple access (RSMA) is regarded as a crucial and powerful physical layer (PHY) paradigm for next-generation communication systems. Particularly, users employ succ…

cs.IT2024

Fluid Antenna Grouping Index Modulation Design for MIMO Systems

Xinghao Guo, Yin Xu, Dazhi He +3

Index modulation (IM) significantly enhances the spectral efficiency of fluid antennas (FAs) enabled multiple-input multiple-output (MIMO) systems, which is named FA-IM. However, d…

cs.IT2024

PAPR Reduction with Pre-chirp Selection for Affine Frequency Division Multiplexing

Haozhi Yuan, Yin Xu, Xinghao Guo +5

Affine frequency division multiplexing (AFDM) is a promising new multicarrier technique for high-mobility communications based on discrete affine Fourier transform (DAFT). By prope…

cs.IT2023

Capacity-based Spatial Modulation Constellation and Pre-scaling Design

Xinghao Guo, Hanjiang Hong, Yin Xu +3

Spatial Modulation (SM) can utilize the index of the transmit antenna (TA) to transmit additional information. In this paper, to improve the performance of SM, a non-uniform conste…

cs.IT2023

RIS-Aided Receive Generalized Spatial Modulation Design with Reflecting Modulation

Xinghao Guo, Yin Xu, Hanjiang Hong +5

Spatial modulation (SM) transmits additional information bits by the selection of antennas. Generalized spatial modulation (GSM), as an advanced type of SM, can be divided into div…