Issue 99
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A Feasibility Study on Modulation-Domain Waveform Design for Physical Layer Security
Publication Year: 2025,Page(s):1 - 1
Information security in wireless communication is imperative for emerging applications. In the field of physical layer security, power-domain and coding-domain schemes are implemented to ensure the confidentiality. However, existing methods enhance system security based on information theory, neglecting the potential in modulation process. To this end, this letter proposes a modulation-domain wave...Show More
Deep Learning-Based Detection for RSMA with Orthogonal Time Frequency Space Modulation
Publication Year: 2025,Page(s):1 - 1
The increasing demands for high-speed and reliable wireless communication in dynamic environments, such as high-Doppler scenarios, pose significant challenges to existing modulation and access schemes. Traditional techniques including orthogonal frequency division multiplexing (OFDM) and non-orthogonal multiple access (NOMA) are not suitable under such conditions due to their susceptibility to int...Show More
CeGen: A Cost-Effective Probe Generation Scheme for Rule Verification in SDN
Publication Year: 2017,Page(s):1 - 1
Rule verification is a prevalent way to troubleshoot network issues, which needs to generate a proper set of probes to exercise the rules. Existing probe generation schemes either determine a minimum number of probes using end-to-end probing, whose computation time is too long to handle rule dynamics, or generate and verify the rules one by one in a streaming way using per hop probing, which produ...Show More
STAR-RIS Aided Communication System with Movable Antennas Exploiting Statistical CSI
Yunan Sun;Hao Xu;Boyu Ning;Lipeng Zhu;Chongjun Ouyang;Hongwen Yang
Publication Year: 2025,Page(s):1 - 1
Simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) and movable antenna (MA) are two promising technologies to reshape wireless channels and improve communication performance. To reap their synergic gains, this letter investigates a STAR-RIS aided communication system with MAs to maximize the ergodic sum-rate of multiple users by exploiting statistical channel ...Show More
Hybrid reflection modulation (HRM) is a promising modulation technique which employs a combination of active and passive reflecting elements in reconfigurable intelligent surfaces (RIS). In addition to applying phase tuning, the active elements apply an amplification to its incident signal, which can alleviate the double-fading effect inherent in RIS systems. The choice of the elements to be made ...Show More
Channel Estimation in RIS-Aided Heterogeneous Wireless Networks via Federated Learning
Muhammad Asaad Cheema;Apoorva Chawla;Vinay Chakravarthi Gogineni;Pierluigi Salvo Rossi
Publication Year: 2025,Page(s):1 - 1
Downlink channel estimation in reconfigurable intelligent surface (RIS)-assisted communication systems employing federated learning (FL) is challenging due to communication/ computational overhead, users heterogeneity, and vulnerability to malicious users. This letter proposes a novel methodology integrating principal component analysis (PCA)-based clustering with FL, tailored for heterogeneous us...Show More
Queue-Stability Constrained Robust Secure Beamforming in Satellite-Terrestrial Integrated Networks
Publication Year: 2025,Page(s):1 - 1
This paper proposes a robust secure beamforming (BF) scheme for a satellite-terrestrial integrated network (STIN), where earth stations are served by the satellite network in presence of multiple eavesdroppers, and the terrestrial network operating the same spectrum provides multicast services to terrestrial users. Unlike most existing works that merely focused on static networks, we consider the ...Show More
Interleaved Block-Sparse Transform
Lei Liu;Ming Wang;Shufeng Li;Yuhao Chi;Ning Wei;Zhaoyang Zhang
Publication Year: 2025,Page(s):1 - 1
Low-complexity Bayes-optimal memory approximate message passing (MAMP) is an efficient signal estimation algorithm. However, achieving replica Bayes optimality with MAMP necessitates a large-scale right-unitarily invariant transformation, which is prohibitive in practical systems due to its high computational complexity and hardware costs. To solve this problem, this letter proposes a low-complexi...Show More
Interleaved Block-Sparse Transform
Lei Liu;Ming Wang;Shufeng Li;Yuhao Chi;Ning Wei;Zhaoyang Zhang
Year: 2025, ( Early Access )
Active RIS-assisted Communication Systems with Discrete Phase Shifts
Zhaoying Mo;Yiyang Ni;Yaxuan Liu;Haitao Zhao;Longze Li;Yan Cai
Publication Year: 2025,Page(s):1 - 1
Reconfigurable intelligent surface (RIS) has made significant contributions to enhancing wireless coverage via the effective management of scattering radio environment. This paper centers on an active RIS-assisted communication system over Nakagami-m fading channels where the discrete phase shifter is taken into consideration. We first obtain the approximate expression of ergodic achievable rate. ...Show More
Robust Deep Blind Equalization Network Under Time-Varying Channels
Publication Year: 2025,Page(s):1 - 1
As a key technology to recover transmitted symbols without any prior information of the incoming signals, blind equalization (BE) has gained widespread attention from researchers. However, conventional BE algorithms often assume a constant or slowly varying channel, limiting their effectiveness in rapidly changing environments. In this letter, we propose a transformer-based deep BE network specifi...Show More
Robust Beamforming for Uplink RSMA in UAV Communication Systems With Jittering
Publication Year: 2025,Page(s):1 - 1
This letter investigates a robust beamforming (BF) scheme for a rate-splitting multiple access-enabled unmanned aerial vehicle (UAV) uplink communication system under jittering effects. Considering multiple two-user pairs, we formulate a worst-case achievable sum rate maximization problem by jointly optimizing the transmit power of ground users and the receive BF of UAV. The difficulties of this p...Show More
Analysis of Polarization Characteristics in Outdoor-to-Indoor Wireless Channels for High-Speed Trains
Yichen Feng;Rui Wang;Xiaoyong Wang;Lixu He;Wei Xiang;Asad Saleem;Guoxin Zheng
Publication Year: 2025,Page(s):1 - 1
To effectively deploy 5G network base stations (BSs) in railway communication systems and ensure reliable communication between train terminals and BSs, it is essential to study the outdoor-to-indoor (O2I) wireless channel characteristics in high-speed trains (HSTs). This letter utilizes data from the 2.6 GHz HST measurement campaign to calibrate and validate the ray-tracing simulation model for t...Show More
Secure MIMO Communication via Pilot-Based Codebook Artificial Noise: Unknown Eavesdropper Channel
Publication Year: 2025,Page(s):1 - 1
Pilot-Based Codebook Artificial Noise (PCAN), which plays a crucial role in ensuring secure communication, is an emerging physical layer security technique. PCAN faces a significant challenge due to the unknown eavesdropper channel. To address this issue, this letter re-models the eavesdropper channel using random matrix theory. By applying the η-transform and Shannon-transform, the asymptotic exp...Show More
Structured SCMA Codebook Design by Joint Parameter Optimization Based on Union Bound
Publication Year: 2025,Page(s):1 - 1
In the structured codebook design for sparse code multiple access (SCMA) systems, the constellation structure, constellation mapping matrix (CMM), and bit labeling are critical factors influencing the error performance of optimized codebooks. However, existing multi-stage codebook design methods limit the potential coding gain. Besides, although the minimum Euclidean distance (MED) is commonly use...Show More
On Performance of Cooperative Satellite-UAV-secured Reconfigurable Intelligent Surface Systems with Phase Errors
Publication Year: 2025,Page(s):1 - 1
This work studies the secrecy outage performance (SOP) of a reconfigurable intelligent surface (RIS)-empowered satellite-unmanned aerial vehicle (UAV) networks, where multiple antennas satellite communicates with its legitimate destination via a decode-and-forward UAV combined with an RIS in the presence of the eavesdropper. Considering the satellite channels and the terrestrial channels obeying S...Show More
A Method to Verify Neural Network Decoders against Adversarial Attacks
Publication Year: 2025,Page(s):1 - 1
In this letter, we focus on the robustness performance of deep neural networks (DNNs) in the context of channel decoding tasks when confronted with adversarial attacks. Leveraging interval analysis, we verify the robustness of these DNNs against adversarial attacks within a specific power range. We demonstrate that a verified upper bound can serve as an effective metric to quantify the defense cap...Show More
Global Satellite Navigation Distributed Synchronous Spoofing Monitoring Method based on Spatial Cross-correlation Spectrum
Publication Year: 2025,Page(s):1 - 1
A novel distributed global satellite navigation synchronous spoofer, which is deployed as a pseudo-satellite constellation, sends several synchronous spoofing signals from different directions of arrival (DOAs). In this letter, we propose a synchronous spoofing monitoring method based on a spatial cross-correlation spectrum. The power and corresponding DOA measurements of those correlated sources ...Show More
A Semantic Communication Scheme for Distributed Holographic-Type Communications with Multi-View Images
Publication Year: 2024,Page(s):1 - 1
Holographic-type communication (HTC) is emerging as an important application scenario for the next-generation communication systems. In particular, to provide immersive user experiences, HTC requires to implement 3D visual reconstruction of a physical object by collecting multi-view images from multiple viewpoints. However, it is a dilemma to balance the efficiency and the visual quality of this d...Show More
Coverage Analysis and Beamwidth Adjustment for Sensing-Assisted mmWave Networks with Beam Misalignment
Publication Year: 2025,Page(s):1 - 1
This letter studies the coverage performance of the sensing-assisted millimeter wave networks with imperfect beam alignment to guide beamwidth adjustment. A sensing-assisted adaptive beamforming (SABF) scheme is proposed where the transmitted beamwidth is dynamically adjusted based on sensing estimation to achieve a favorable tradeoff between beamforming gain and beam misalignment probability. To ...Show More
Interleaved Chirp Spreading LoRa-Based Modulation with Continuous Phase
Publication Year: 2024,Page(s):1 - 1
Exploration for new dimensions to convey information is a non-trivial task for resource-limited communications. Interleaved Chirp Spreading LoRa (ICS-LoRa) constitutes a new multi-dimensional space from the interleaved versions of LoRa waveforms to convey extra bits. Nevertheless, it destroys the phase continuity of LoRa waveforms and degrades the spectral localization, offsetting the benefit from...Show More
Non-Stationary Channel Estimation for XL-MIMO with Hybrid Structure via Low-Rank Matrix Completion
Publication Year: 2025,Page(s):1 - 1
Due to the spatial non-stationary (SnS) property of extremely large-scale MIMO (XL-MIMO), channel estimation algorithms that rely on the assumption of spatial stationarity are no longer suitable. To address this problem, in this paper, we utilize the low-rank property of channels to investigate a non-stationary channel estimation algorithm based on low-rank matrix completion for XL-MIMO with hybri...Show More
Joint Optimization for Power-Splitting Relay-Assisted Over-the-Air Computation Networks
Publication Year: 2025,Page(s):1 - 1
Relays can significantly improve the performance of over-the-air computation (AirComp) networks, especially when the sensors and the fusion center (FC) are far apart. However, the relay’s energy supply is a common constraint factor of relay-assisted AirComp networks. To address the power constrained issue, we introduce power-splitting (PS) relays into an AirComp network, where the relays can harve...Show More
Graph Network-based UWB Localization via Learning Spatial-Temporal and Geometric Features
Publication Year: 2025,Page(s):1 - 1
In this letter, we propose a Graph-Attention-Recurrent Neural Network (Graph-ARNN) to improve UWB localization in complex environment by incorporating spatial, temporal and geometric information. We first build the ranging measurements from UWB sensors as a large spatial-temporal graph structure, and then the Graph-ARNN including the graph convolutional model, graph-attention model and deep RNN mo...Show More
Channel Estimation for Near-Field Line-of-Sight XL-MIMO Communications Using Geometric Prior
Publication Year: 2025,Page(s):1 - 1
This letter investigates the channel estimation for near-field line-of-sight (LoS) extremely-large multiple-input-multiple-output (XL-MIMO) communications, where both the transceivers are equipped with uniform linear arrays (ULAs). For near-field LoS channels within millimeter wave and sub-teraherz frequency bands, electromagnetic waves typically propagate with little diffraction or scattering, im...Show More
A Blind Spatial Spectrum Sensing Algorithm for Noncircular Signals
Publication Year: 2025,Page(s):1 - 1
In cognitive radio, most spatial spectrum sensing algorithms ignore the characteristic of the noncircular (NC) signals that are common in modern communication systems. In this letter, we propose a novel blind spatial spectrum sensing algorithm for NC signals. First, the spatial spectrum of the NC signals is improved by utilizing the complementary covariance. On this basis, we present the maximum-m...Show More
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