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With the increasing development of Internet of Things (IoT), the upcoming sixth-generation (6G) wireless network is required to support grant-free random access of a massive number of sporadic traffic devices. In particular, at the…

Information Theory · Computer Science 2020-12-29 Xiaodan Shao , Xiaoming Chen , Yiyang Qiang , Caijun Zhong , Zhaoyang Zhang

Many wireless vision applications, such as autonomous driving, require preservation of global structural information rather than only per-pixel fidelity. However, existing Deep joint source-channel coding (DeepJSCC) schemes mainly optimize…

Machine Learning · Computer Science 2026-03-19 Omar Erak , Omar Alhussein , Fang Fang , Sami Muhaidat

To address the challenges of robust data transmission over complex time-varying channels, this paper introduces channel learning and enhanced adaptive reconstruction (CLEAR) strategy for semantic communications. CLEAR integrates deep joint…

Networking and Internet Architecture · Computer Science 2024-12-13 Hongzhi Pan , Shengliang Wu , Lingyun Wang , Yujun Zhu , Weiwei Jiang , Xin He

Advancements in satellite technology have made direct-to-device connectivity a viable solution for ensuring global access. This method is designed to provide internet connectivity to remote, rural, or underserved areas where traditional…

Signal Processing · Electrical Eng. & Systems 2024-07-02 Zohre Mashayekh Bakhsh , Yasaman Omid , Gaojie Chen , Farbod Kayhan , Yi Ma , Rahim Tafazolli

We introduce deep joint source-channel coding (DeepJSCC) schemes for image transmission over cooperative relay channels. The relay either amplifies-and-forwards its received signal, called DeepJSCC-AF, or leverages neural networks to…

Signal Processing · Electrical Eng. & Systems 2024-11-11 Chenghong Bian , Yulin Shao , Haotian Wu , Emre Ozfatura , Deniz Gunduz

This study focuses on the mobile video delivery from a video server to a multi-homed client with a network of heterogeneous wireless. Joint Source-Channel Coding is effectively used to transmit video over bandwidth-limited, noisy wireless…

Networking and Internet Architecture · Computer Science 2015-06-30 Xiaoyan Gao

Low Earth Orbit satellite networks pose significant challenges to multi-hop semantic transmission because rapidly changing topology, link variability, and queue dynamics make end-to-end performance jointly depend on routing, relay…

Networking and Internet Architecture · Computer Science 2026-04-16 Hong Zeng , Jiangtao Luo , Yongyi Ran

Channel state information (CSI) at transmitter is crucial for massive MIMO downlink systems to achieve high spectrum and energy efficiency. Existing works have provided deep learning architectures for CSI feedback and recovery at the…

Signal Processing · Electrical Eng. & Systems 2022-04-21 Yu-Chien Lin , Ta-Sung Lee , Zhi Ding

Simulation tools are commonly used in the development and testing of new protocols or new networks. However, as satellite networks start to grow to encompass thousands of nodes, and as companies and space agencies begin to realize the…

Networking and Internet Architecture · Computer Science 2025-10-30 Joshua Smailes , Filip Futera , Sebastian Köhler , Simon Birnbach , Martin Strohmeier , Ivan Martinovic

Direct satellite uplink is severely constrained by limited link budgets, which hinder the exploitation of wideband resources, and ultimately limit the throughout. This paper presents a pilot-less coded modulation scheme based on sparse…

Information Theory · Computer Science 2026-04-23 Alberto G. Perotti , Branislav M. Popovic , Renaud-Alexandre Pitaval

The amount of data generated by Earth observation satellites can be enormous, which poses a great challenge to the satellite-to-ground connections with limited rate. This paper considers problem of efficient downlink communication of…

Signal Processing · Electrical Eng. & Systems 2023-11-28 Van-Phuc Bui , Thinh Q. Dinh , Israel Leyva-Mayorga , Shashi Raj Pandey , Eva Lagunas , Petar Popovski

Channel Charting is a dimensionality reduction technique that learns to reconstruct a low-dimensional, physically interpretable map of the radio environment by taking advantage of similarity relationships found in high-dimensional channel…

Information Theory · Computer Science 2024-12-03 Florian Euchner , Phillip Stephan , Stephan ten Brink

Dramatic cost reductions driven by private sector innovations have led to a rapid increase in the number of satellites in orbit and a corresponding surge in space-generated data. As this trend continues, transmitting large volumes of data…

Compressive sensing is a promising solution for the channel estimation in multiple-input multiple-output (MIMO) systems with large antenna arrays and constrained hardware. Utilizing site-specific channel data from real-world systems, deep…

Signal Processing · Electrical Eng. & Systems 2024-05-14 Hao Luo , Ahmed Alkhateeb

Collaborative perception improves 3D understanding by fusing multi-agent observations, yet intermediate-feature sharing faces strict bandwidth constraints as dense BEV features saturate V2X links. We observe that collaborators view the same…

Computer Vision and Pattern Recognition · Computer Science 2026-02-03 Yuankun Zeng , Shaohui Li , Zhi Li , Shulan Ruan , Yu Liu , You He

Sentinel-5P (S5P) satellite provides atmospheric measurements for air quality and climate monitoring. While the S5P satellite offers rich spectral resolution, it inherits physical limitations that restricts its spatial resolution.…

Image and Video Processing · Electrical Eng. & Systems 2025-01-30 Hyam Omar Ali , Romain Abraham , Bruno Galerne

Although a significant number satellites are deemed essential for facilitating diverse applications of satellite networks, aerial platforms are emerging as excellent alternatives for enabling reliable communications with fewer satellites.…

Information Theory · Computer Science 2024-12-02 Chang-Sik Choi

The stringent link budget, caused by long propagation distances and payload constraints, poses a fundamental bottleneck for single-satellite transmission. Although LEO mega-constellations make multi-satellite cooperative transmission…

Signal Processing · Electrical Eng. & Systems 2026-03-31 Yiming Zhu , Yafei Wang , Carla Amatetti , Alessandro Vanelli-Coralli , Wenjin Wang , Rui Ding , Symeon Chatzinotas , Björn Ottersten

Earth observation offers new insight into anthropogenic changes to nature, and how these changes are effecting (and are effected by) the built environment and the real economy. With the global availability of medium-resolution (10-30m)…

Computer Vision and Pattern Recognition · Computer Science 2021-02-15 Lucas Kruitwagen

This paper explores the integration of deep learning techniques for joint sensing and communications, with an extension to semantic communications. The integrated system comprises a transmitter and receiver operating over a wireless…

Networking and Internet Architecture · Computer Science 2024-10-22 Yalin E. Sagduyu , Tugba Erpek , Aylin Yener , Sennur Ulukus