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Semantic communications aim to enhance transmission efficiency by jointly optimizing source coding, channel coding, and modulation. While prior research has demonstrated promising performance in simulations, real-world implementations often…

Information Theory · Computer Science 2026-04-29 Hanju Yoo , Dongha Choi , Yonghwi Kim , Yoontae Kim , Songkuk Kim , Chan-Byoung Chae , Robert W. Heath

The integration of multicarrier modulation and multiple-input-multiple-output (MIMO) is critical for reliable transmission of wireless signals in complex environments, which significantly improve spectrum efficiency. Existing studies have…

Information Theory · Computer Science 2026-01-09 Yuhao Chi , Zhiyuan Peng , Lei Liu , Ying Li , Yao Ge , Chau Yuen

Advances in latent diffusion models (LDMs) have revolutionized high-resolution image generation, but the design space of the autoencoder that is central to these systems remains underexplored. In this paper, we introduce LiteVAE, a new…

Machine Learning · Computer Science 2025-01-22 Seyedmorteza Sadat , Jakob Buhmann , Derek Bradley , Otmar Hilliges , Romann M. Weber

For many Automatic Speech Recognition (ASR) tasks audio features as spectrograms show better results than Mel-frequency Cepstral Coefficients (MFCC), but in practice they are hard to use due to a complex dimensionality of a feature space.…

Sound · Computer Science 2024-10-07 Olga Iakovenko , Ivan Bondarenko

Self-supervised learning has been a powerful training paradigm to facilitate representation learning. In this study, we design a masked autoencoder (MAE) to guide deep learning models to learn electroencephalography (EEG) signal…

Human-Computer Interaction · Computer Science 2024-09-04 Yifei Zhou , Sitong Liu

In this paper, we develop a framework to investigate the performances of different hybrid beamforming architectures for massive multiple input multiple output (MIMO) systems impaired by power amplifier (PA) nonlinearities. Indirect learning…

Information Theory · Computer Science 2021-03-01 Murat Babek Salman , Gokhan Muzaffer Guvensen

The expected operating scenarios of 5G pose a great challenge to orthogonal frequency division multiplexing (OFDM) which has poor out of band (OoB) spectral properties, stringent synchronization requirements, and large symbol duration.…

Information Theory · Computer Science 2015-06-16 Shashank Tiwari , Suvra Sekhar Das , Kalyan Kumar Bandyopadhyay

Steered-Mixtures-of-Experts (SMoE) models provide sparse, edge-aware representations, applicable to many use-cases in image processing. This includes denoising, super-resolution and compression of 2D- and higher dimensional pixel data.…

Image and Video Processing · Electrical Eng. & Systems 2022-07-26 Elvira Fleig , Jonas Geistert , Erik Bochinski , Rolf Jongebloed , Thomas Sikora

Starting from first principles of wave propagation, we consider a multiple-input multiple-output (MIMO) representation of a communication system between two spatially-continuous volumes. This is the concept of holographic MIMO…

Signal Processing · Electrical Eng. & Systems 2022-09-30 Luca Sanguinetti , Antonio A. D'Amico , Merouane Debbah

This paper investigates the application of end-to-end (E2E) learning for joint optimization of pulse-shaper and receiver filter to reduce intersymbol interference (ISI) in bandwidth-limited communication systems. We investigate this in two…

Signal Processing · Electrical Eng. & Systems 2024-12-18 Søren Føns Nielsen , Francesco Da Ros , Mikkel N. Schmidt , Darko Zibar

In this work we consider a multiple-input multiple-output (MIMO) dual-function radar-communication (DFRC) system, which senses multiple spatial directions and serves multiple users. Upon resorting to an orthogonal frequency division…

Signal Processing · Electrical Eng. & Systems 2022-03-09 Jeremy Johnston , Luca Venturino , Emanuele Grossi , Marco Lops , Xiaodong Wang

Using multiple-input multiple-output (MIMO) with orthogonal frequency division multiplexing (OFDM) for integrated sensing and communication (ISAC) has attracted considerable attention in recent years. While most existing works focus on…

Signal Processing · Electrical Eng. & Systems 2026-02-03 Po-Chun Kang , Ming-Chun Lee , Tzu-Chien Chiu , Ting-Yao Kuo , Ta-Sung Lee

This paper presents an innovative approach to enhancing machine learning based communication systems, specifically focusing on multiple-input multiple-output (MIMO) configurations using autoencoders. We optimize the transmitter, receiver,…

Signal Processing · Electrical Eng. & Systems 2026-05-26 Mohammad Reza Ghavidel Aghdam , Alireza Naghavi

This paper studies the performance of optical orthogonal frequency-division multiplexing (OFDM)-based multi-user integrated sensing and communication (ISAC) systems employing non-orthogonal multiple access (NOMA). Due to their inherent high…

Systems and Control · Electrical Eng. & Systems 2025-11-05 Nam N. Luong , Chuyen T. Nguyen , Thanh V. Pham

Visual generative models (e.g., diffusion models) typically operate in compressed latent spaces to balance training efficiency and sample quality. In parallel, there has been growing interest in leveraging high-quality pre-trained visual…

Computer Vision and Pattern Recognition · Computer Science 2025-12-17 Yuan Gao , Chen Chen , Tianrong Chen , Jiatao Gu

Orthogonal frequency division multiplexing (OFDM) is one of the most widely adopted waveforms for integrated sensing and communication (ISAC) systems, owing to its high spectral efficiency and compatibility with modern communication…

Signal Processing · Electrical Eng. & Systems 2025-10-16 Kawon Han , Kaitao Meng , Alexandra Chatzicharistou , Christos Masouros

Orthogonal frequency division multiplexing (OFDM) has been widely recognized as the representative waveform for 5G wireless networks, which can directly support sensing/positioning with existing infrastructure. To guarantee superior…

Signal Processing · Electrical Eng. & Systems 2024-03-21 Fan Zhang , Tianqi Mao , Ruiqi Liu , Zhu Han , Sheng Chen , Zhaocheng Wang

This paper presents the first orthogonal frequency-division multiplexing(OFDM)-based digital over-the-air computation (AirComp) system for wireless federated edge learning, where multiple edge devices transmit model data simultaneously…

Information Theory · Computer Science 2023-07-06 Lizhao You , Xinbo Zhao , Rui Cao , Yulin Shao , Liqun Fu

In a multiple-input multiple-output frequency-division duplexing (MIMO-FDD) system, the user equipment (UE) sends the downlink channel state information (CSI) to the base station to report link status. Due to the complexity of MIMO systems,…

Networking and Internet Architecture · Computer Science 2022-07-19 Mostafa Hussien , Kim Khoa Nguyen , Mohamed Cheriet

Integrated sensing and communication (ISAC) is a key feature of next-generation wireless networks, enabling a wide range of emerging applications such as vehicle-to-everything (V2X) and unmanned aerial vehicles (UAVs), which operate in…

Signal Processing · Electrical Eng. & Systems 2025-11-03 Haoran Yin , Yanqun Tang , Jun Xiong , Fan Liu , Yuanhan Ni , Qu Luo , Roberto Bomfin , Marwa Chafii , Marios Kountouris , Christos Masouros
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