Search Results for author:
Found 36 papers, 7 papers with code
Meta-Learning-Driven Adaptive Codebook Design for Near-Field Communications
Specifically, we first design a deep neural network (DNN) to learn the near-field codebook.
What If We Had Used a Different App? Reliable Counterfactual KPI Analysis in Wireless Systems
In modern wireless network architectures, such as Open Radio Access Network (O-RAN), the operation of the radio access network (RAN) is managed by applications, or apps for short, deployed at intelligent controllers.
Rate-Adaptive Generative Semantic Communication Using Conditional Diffusion Models
In this letter, we propose a novel generative DJSCC approach using conditional diffusion models to enhance the perceptual quality of transmitted images.
Learned Image Transmission with Hierarchical Variational Autoencoder
In this paper, we introduce an innovative hierarchical joint source-channel coding (HJSCC) framework for image transmission, utilizing a hierarchical variational autoencoder (VAE).
Automatic AI Model Selection for Wireless Systems: Online Learning via Digital Twinning
This paper proposes a novel method for the online optimization of AMS mapping that corrects for the bias of the simulator by means of limited real data collected from the physical system.
Digital Wireless Image Transmission via Distribution Matching
Firstly, we introduce a uniform modulation scheme, where the distance between two constellations is adjustable to match the non-uniform nature of the distribution.
From Analog to Digital: Multi-Order Digital Joint Coding-Modulation for Semantic Communication
Herein, we treat modulation/demodulation as a constrained quantization process and introduce scaling operations alongside manually crafted noise to approximate this process.
Feature Allocation for Semantic Communication with Space-Time Importance Awareness
To tackle this challenge, we introduce a framework called Feature Allocation for Semantic Transmission (FAST), which offers adaptability to channel fluctuations across both spatial and temporal domains.
Deep Refinement-Based Joint Source Channel Coding over Time-Varying Channels
This specialization poses a limitation, as their performance tends to wane in practical scenarios marked by highly dynamic channels, given that a fixed SNR inadequately represents the dynamic nature of such channels.
Alleviating Distortion Accumulation in Multi-Hop Semantic Communication
To address the problem of distortion accumulation, we introduce a novel recursive training method for the encoder and decoder of semantic communication systems.
SCAN: Semantic Communication with Adaptive Channel Feedback
Then, since the images with lower reconstruction quality are generally less robust and need to be allocated with more communication resources, we propose a novel framework of Semantic Communication with Adaptive chaNnel feedback (SCAN).
Meta-Gating Framework for Fast and Continuous Resource Optimization in Dynamic Wireless Environments
The proposed framework, consisting of an inner network and an outer network, aims to adapt to the dynamic wireless environment by achieving three important goals, i. e., seamlessness, quickness and continuity.
Radar Sensing via OTFS Signaling
By multiplexing information symbols in the delay-Doppler (DD) domain, orthogonal time frequency space (OTFS) is a promising candidate for future wireless communication in high-mobility scenarios.
One-shot Learning for Channel Estimation in Massive MIMO Systems
In this work, we propose a one-shot self-supervised learning framework for channel estimation in multi-input multi-output (MIMO) systems.
Rate-Adaptive Coding Mechanism for Semantic Communications With Multi-Modal Data
Based on the proposed framework, we further establish a general rate-adaptive coding mechanism for various types of multi-modal semantic tasks.
Deep-Unfolding for Next-Generation Transceivers
Then, some endeavors in applying deep-unfolding approaches in next-generation advanced transceiver design are presented.
FAST: Feature Arrangement for Semantic Transmission
In this paper, we propose a scheme of Feature Arrangement for Semantic Transmission (FAST).
Adaptive CSI Feedback for Deep Learning-Enabled Image Transmission
In particular, we develop a performance evaluator to predict the reconstruction quality of each image, so that the proposed scheme can adaptively decrease the CSI feedback overhead for the transmitted images with high predicted reconstruction qualities in the JSCC system.
Design and Performance Analysis of Wireless Legitimate Surveillance Systems with Radar Function
We seek to jointly optimize the receive and transmit beamforming vectors to maximize the eavesdropping success probability which is transformed into the difference of signal-to-interference-plus-noise ratios (SINRs) subject to the performance requirements of radar and surveillance.
Radar Sensing via OTFS Signaling: A Delay Doppler Signal Processing Perspective
The recently proposed orthogonal time frequency space (OTFS) modulation multiplexes data symbols in the delay-Doppler (DD) domain.
Simultaneously Transmitting and Reflecting (STAR) RIS Assisted Over-the-Air Computation Systems
The performance of over-the-air computation (AirComp) systems degrades due to the hostile channel conditions of wireless devices (WDs), which can be significantly improved by the employment of reconfigurable intelligent surfaces (RISs).
A Unified Multi-Task Semantic Communication System for Multimodal Data
Task-oriented semantic communications have achieved significant performance gains.
Latency Minimization for mmWave D2D Mobile Edge Computing Systems: Joint Task Allocation and Hybrid Beamforming Design
Mobile edge computing (MEC) and millimeter wave (mmWave) communications are capable of significantly reducing the network's delay and enhancing its capacity.
Multiband Delay Estimation for Localization Using a Two-Stage Global Estimation Scheme
In the coarse stage, we exploit the group sparsity structure of the multiband channel and propose a Turbo Bayesian inference (Turbo-BI) algorithm to achieve a good initial delay estimation based on a coarse signal model, which is transformed from the original multiband signal model by absorbing the carrier frequency terms.
Robust Semantic Communications with Masked VQ-VAE Enabled Codebook
Although semantic communications have exhibited satisfactory performance for a large number of tasks, the impact of semantic noise and the robustness of the systems have not been well investigated.
A Unified Multi-Task Semantic Communication System with Domain Adaptation
Simulation results demonstrate that our proposed U-DeepSC achieves comparable performance to the task-oriented semantic communication system designed for a specific task with significant transmission overhead reduction and much less number of model parameters.
Robust Semantic Communications Against Semantic Noise
In this paper, we first propose a framework for the robust end-to-end semantic communication systems to combat the semantic noise.
DDPG-Driven Deep-Unfolding with Adaptive Depth for Channel Estimation with Sparse Bayesian Learning
Furthermore, the proposed framework is extended to realize the adaptive depth of the general deep neural networks (DNNs).
Deep-Unfolding Beamforming for Intelligent Reflecting Surface assisted Full-Duplex Systems
Moreover, due to the high computational complexity caused by the matrix inversion computation in the SSCA-based optimization algorithm, we further develop a deep-unfolding neural network (NN) to address this issue.
Two-Timescale End-to-End Learning for Channel Acquisition and Hybrid Precoding
To reduce the signaling overhead and channel state information (CSI) mismatch caused by the transmission delay, a two-timescale DNN composed of a long-term DNN and a short-term DNN is developed.
Latency Minimization in Intelligent Reflecting Surface Assisted D2D Offloading Systems
In this letter, we investigate an intelligent reflecting surface (IRS) aided device-to-device (D2D) offloading system, where an IRS is employed to assist in computation offloading from a group of users with intensive tasks to another group of idle users.
Channel Estimation for IRS-aided Multiuser Communications with Reduced Error Propagation
Intelligent reflecting surface (IRS) has emerged as a promising paradigm to improve the capacity and reliability of a wireless communication system by smartly reconfiguring the wireless propagation environment.
Joint Deep Reinforcement Learning and Unfolding: Beam Selection and Precoding for mmWave Multiuser MIMO with Lens Arrays
In this work, we investigate the joint design of beam selection and digital precoding matrices for mmWave MU-MIMO systems with DLA to maximize the sum-rate subject to the transmit power constraint and the constraints of the selection matrix structure.
Stochastic Hybrid Combining Design for Quantized Massive MIMO Systems
Both the power-dissipation and cost of massive multiple-input multiple-output (mMIMO) systems may be substantially reduced by using low-resolution analog-to-digital converters (LADCs) at the receivers.
Low-Complexity Joint Power Allocation and Trajectory Design for UAV-Enabled Secure Communications with Power Splitting
An unmanned aerial vehicle (UAV)-aided secure communication system is conceived and investigated, where the UAV transmits legitimate information to a ground user in the presence of an eavesdropper (Eve).
Iterative Algorithm Induced Deep-Unfolding Neural Networks: Precoding Design for Multiuser MIMO Systems
Then, we implement the proposed deepunfolding framework to solve the sum-rate maximization problem for precoding design in MU-MIMO systems.
