Gaojie Chen
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View article: Enabling flexible, wearable, and implantable electronics with radio frequency‐based wireless charging: Fundamentals, challenges, and emerging applications
Enabling flexible, wearable, and implantable electronics with radio frequency‐based wireless charging: Fundamentals, challenges, and emerging applications Open
Wireless charging delivers power wirelessly across an air gap to recharge electronic devices without requiring direct physical connections. The rapid advancements in wireless charging technologies and the emergence of commercial products h…
View article: Measurement report: High contribution of N <sub>2</sub> O <sub>5</sub> uptake to particulate nitrate formation in NO <sub>2</sub> -limited urban areas
Measurement report: High contribution of N <sub>2</sub> O <sub>5</sub> uptake to particulate nitrate formation in NO <sub>2</sub> -limited urban areas Open
Particulate nitrate (pNO3-) is a major component of fine particle in Chinese urban areas. However, the relative contributions of pNO3- formation pathways in NO2-limited urban areas remain poorly quantified, hindering further particulate po…
View article: Supplementary material to "Measurement report: High contribution of N <sub>2</sub> O <sub>5</sub> uptake to particulate nitrate formation in NO <sub>2</sub> -limited urban areas"
Supplementary material to "Measurement report: High contribution of N <sub>2</sub> O <sub>5</sub> uptake to particulate nitrate formation in NO <sub>2</sub> -limited urban areas" Open
View article: Measurement report: Molecular characterization of organic aerosol in coastal environments using offline FIGAERO-I-CIMS
Measurement report: Molecular characterization of organic aerosol in coastal environments using offline FIGAERO-I-CIMS Open
Organic aerosol (OA), as a key component of particulate matter, exerts significant impacts on public health and the environment. However, understanding of molecular characterization of OA under diverse environments remains limited. This st…
View article: Hybrid Generative Semantic and Bit Communications in Satellite Networks: Trade-offs in Latency, Generation Quality, and Computation
Hybrid Generative Semantic and Bit Communications in Satellite Networks: Trade-offs in Latency, Generation Quality, and Computation Open
As satellite communications play an increasingly important role in future wireless networks, the issue of limited link budget in satellite systems has attracted significant attention in current research. Although semantic communications em…
View article: Formation drivers and photochemical effects of ClNO <sub>2</sub> in a coastal city of Southeast China
Formation drivers and photochemical effects of ClNO <sub>2</sub> in a coastal city of Southeast China Open
Nitryl chloride (ClNO2) is an important precursor of chlorine (Cl) radical, significantly affecting ozone (O3) formation and photochemical oxidation. However, the key drivers of ClNO2 production are not fully understood. In this study, the…
View article: Joint Beamforming and Position Optimization for Fluid STAR-RIS-NOMA Assisted Wireless Communication Systems
Joint Beamforming and Position Optimization for Fluid STAR-RIS-NOMA Assisted Wireless Communication Systems Open
To address the limitations of traditional reconfigurable intelligent surfaces (RIS) in spatial control capability, this paper introduces the concept of the fluid antenna system (FAS) and proposes a fluid simultaneously transmitting and ref…
View article: Enhanced oxidation capacity driven by pollution-induced chlorine chemistry in the coastal atmosphere
Enhanced oxidation capacity driven by pollution-induced chlorine chemistry in the coastal atmosphere Open
Reactive chlorine chemistry strongly influences the regulation of atmospheric oxidation capacity, thereby exerting profound impacts on the formation of secondary pollutants and air quality. However, current understanding of distributions a…
View article: Applied research note: Surveillance of newcastle disease virus in a live poultry market in Guangdong, China reveals increasing prevalence of class I NDV
Applied research note: Surveillance of newcastle disease virus in a live poultry market in Guangdong, China reveals increasing prevalence of class I NDV Open
Summary: Newcastle disease, caused by Newcastle disease virus (NDV), poses a significant threat to global poultry production due to its highly contagious nature and diverse genotypes. To assess the current NDV situation in southern China, …
View article: The coding mitochondrial genome of crayfish <i>Cambarellus patzcuarensis</i> (Cambaridae, Decapoda) with phylogenetic analysis
The coding mitochondrial genome of crayfish <i>Cambarellus patzcuarensis</i> (Cambaridae, Decapoda) with phylogenetic analysis Open
Cambarellus patzcuarensis is a popular aquarium freshwater crayfish in China. In this study, the mitochondrial genome of C. patzcuarensis was sequenced using Illumina HiSeq. The coding mitogenome of C. patzcuarensis is…
View article: Widely Linear Augmented Extreme Learning Machine Based Impairments Compensation for Satellite Communications
Widely Linear Augmented Extreme Learning Machine Based Impairments Compensation for Satellite Communications Open
Satellite communications are crucial for the evolution beyond fifth-generation networks. However, the dynamic nature of satellite channels and their inherent impairments present significant challenges. In this paper, a novel post-compensat…
View article: Model Splitting Enhanced Communication-Efficient Federated Learning for CSI Feedback
Model Splitting Enhanced Communication-Efficient Federated Learning for CSI Feedback Open
Recent advancements have introduced federated machine learning-based channel state information (CSI) compression before the user equipments (UEs) upload the downlink CSI to the base transceiver station (BTS). However, most existing algorit…
View article: Hybrid RIS-Enhanced ISAC Secure Systems: Joint Optimization in the Presence of an Extended Target
Hybrid RIS-Enhanced ISAC Secure Systems: Joint Optimization in the Presence of an Extended Target Open
Unlike the conventional fully-passive and fully-active reconfigurable intelligent surfaces (RISs), a hybrid RIS consisting of active and passive reflection units has recently been concerned, which can exploit their integrated advantages to…
View article: mmWave-LoRadar Empowered Vehicular Integrated Sensing and Communication Systems: LoRa Meets FMCW
mmWave-LoRadar Empowered Vehicular Integrated Sensing and Communication Systems: LoRa Meets FMCW Open
The integrated sensing and communication (ISAC) technique is regarded as a key component in future vehicular applications. In this paper, we propose an ISAC solution that integrates Long Range (LoRa) modulation with frequency-modulated con…
View article: Innovative Stress Release Stimulation Through Sequential Cavity Completion for CBM Reservoir Enhancement
Innovative Stress Release Stimulation Through Sequential Cavity Completion for CBM Reservoir Enhancement Open
China holds substantial coalbed methane resources, yet low single-well productivity persists. While horizontal well cavity completion offers a permeability-enhancing solution through stress release, its effectiveness remains limited by the…
View article: The Communication and Computation Trade-off in Wireless Semantic Communications
The Communication and Computation Trade-off in Wireless Semantic Communications Open
Semantic communications have emerged as a crucial research direction for future wireless communication networks. However, as wireless systems become increasingly complex, the demands for computation and communication resources in semantic …
View article: Driving factors and photochemical impacts of Cl2 in coastal atmosphere of Southeast China
Driving factors and photochemical impacts of Cl2 in coastal atmosphere of Southeast China Open
The elevated levels of molecular chlorine (Cl2) have been observed both during the daytime or nighttime, yet the key drivers influencing Cl2 formation remain unclear. In this study, we observed the distinct daytime and nighttime peaks of C…
View article: Amplitude-Domain Reflection Modulation for Active RIS-Assisted Wireless Communications
Amplitude-Domain Reflection Modulation for Active RIS-Assisted Wireless Communications Open
In this paper, we propose a novel active reconfigurable intelligent surface (RIS)-assisted amplitude-domain reflection modulation (ADRM) transmission scheme, termed as ARIS-ADRM. This innovative approach leverages the additional degree of …
View article: Recent Advances of AgBiS<sub>2</sub>: Synthesis Methods, Photovoltaic Device, Photodetector, and Sensors
Recent Advances of AgBiS<sub>2</sub>: Synthesis Methods, Photovoltaic Device, Photodetector, and Sensors Open
Recent years have seen increased interest in optoelectronic semiconductor materials, particularly those from groups II-VI, IV-VI, and perovskite, due to their outstanding electronic and optical properties. However, the toxicity and environ…
View article: Affine Frequency Division Multiplexing: Extending OFDM for Scenario-Flexibility and Resilience
Affine Frequency Division Multiplexing: Extending OFDM for Scenario-Flexibility and Resilience Open
Next-generation wireless networks are conceived to provide reliable and high-data-rate communication services for diverse scenarios, such as vehicle-to-vehicle, unmanned aerial vehicles, and satellite networks. The severe Doppler spreads i…
View article: Direct Uplink Connectivity in Space MIMO Systems with THz and FSO Inter-Satellite Links
Direct Uplink Connectivity in Space MIMO Systems with THz and FSO Inter-Satellite Links Open
This paper investigates uplink transmission from a single-antenna mobile phone to a cluster of satellites, emphasizing the role of inter-satellite links (ISLs) in facilitating cooperative signal detection. The study focuses on non-ideal IS…
View article: Domain-Adversarial Uncertain Graph Autoencoder for Social Attribute Privacy-Utility Trade-Off
Domain-Adversarial Uncertain Graph Autoencoder for Social Attribute Privacy-Utility Trade-Off Open
View article: Deep Learning-Based Traffic-Aware Base Station Sleep Mode and Cell Zooming Strategy in RIS-Aided Multi-Cell Networks
Deep Learning-Based Traffic-Aware Base Station Sleep Mode and Cell Zooming Strategy in RIS-Aided Multi-Cell Networks Open
Advances in wireless technology have significantly increased the number of wireless connections, leading to higher energy consumption in networks. Among these, base stations (BSs) in radio access networks (RANs) account for over half of th…
View article: Content-aware robust semantic transmission of images over wireless channels with GANs
Content-aware robust semantic transmission of images over wireless channels with GANs Open
Semantic Communication (SemCom) can significantly reduce the transmitted data volume and keep robustness. Task-oriented SemCom of images aims to convey the implicit meaning of source messages correctly, rather than achieving precise bit-by…
View article: GSM: A GNN-based Space-MIMO Framework for Direct-to-Cell Communications
GSM: A GNN-based Space-MIMO Framework for Direct-to-Cell Communications Open
This paper proposes a graph neural network (GNN)-based space multiple-input multiple-output (MIMO) framework, named GSM, for direct-to-cell communications, aiming to achieve distributed coordinated beamforming for low Earth orbit (LEO) sat…
View article: Deep Reinforcement Learning-Based Resource Allocation for Hybrid Bit and Generative Semantic Communications in Space-Air-Ground Integrated Networks
Deep Reinforcement Learning-Based Resource Allocation for Hybrid Bit and Generative Semantic Communications in Space-Air-Ground Integrated Networks Open
In this paper, we introduce a novel framework consisting of hybrid bit-level and generative semantic communications for efficient downlink image transmission within space-air-ground integrated networks (SAGINs). The proposed model comprise…
View article: Generalized spatial modulation detector assisted by reconfigurable intelligent surface based on deep learning
Generalized spatial modulation detector assisted by reconfigurable intelligent surface based on deep learning Open
Reconfigurable Intelligent Surface (RIS) is regarded as a cutting-edge technology for the development of future wireless communication networks with improved frequency efficiency and reduced energy consumption. This paper proposes an archi…
View article: Advanced Nonlinear SCMA Codebook Design Based on Lattice Constellations
Advanced Nonlinear SCMA Codebook Design Based on Lattice Constellations Open
The design of efficient sparse codebooks in sparse code multiple access (SCMA) system have attracted tremendous research attention in the past few years. This paper proposes a novel nonlinear SCMA (NL-SCMA) that can subsume the conventiona…
View article: On the Design of Variable Modulation and Adaptive Modulation for Uplink Sparse Code Multiple Access
On the Design of Variable Modulation and Adaptive Modulation for Uplink Sparse Code Multiple Access Open
Sparse code multiple access (SCMA) is a promising non-orthogonal multiple access scheme for enabling massive connectivity in next generation wireless networks. However, current SCMA codebooks are designed with the same size, leading to inf…
View article: STAR-RIS-Enabled Full-Duplex Integrated Sensing and Communication System
STAR-RIS-Enabled Full-Duplex Integrated Sensing and Communication System Open
Traditional self-interference cancellation (SIC) methods are common in full-duplex (FD) integrated sensing and communication (ISAC) systems. However, exploring new SIC schemes is important due to the limitations of traditional approaches. …