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Semantic communication (SemCom) has emerged as a promising technique for the next-generation communication systems, in which the generation at the receiver side is allowed with semantic features' recovery. However, the majority of existing…

Image and Video Processing · Electrical Eng. & Systems 2025-07-08 Chengyang Liang , Dong Li

Satellite communications can provide massive connections and seamless coverage, but they also face several challenges, such as rain attenuation, long propagation delays, and co-channel interference. To improve transmission efficiency and…

Signal Processing · Electrical Eng. & Systems 2024-10-27 Peiwen Jiang , Chao-Kai Wen , Xiao Li , Shi Jin , Geoffrey Ye Li

Beamforming has significance for enhancing spectral efficiency and mitigating interference in multi-antenna wireless systems, facilitating spatial multiplexing and diversity in dense and high mobility scenarios. Traditional beamforming…

Information Theory · Computer Science 2025-11-06 Cemil Vahapoglu , Timothy J. O'Shea , Wan Liu , Sennur Ulukus

Standard flow matching scales well but typically relies on an unstructured source distribution, limiting its ability to learn interpretable latent structure. Latent-variable models, by contrast, capture structure but often sacrifice…

Machine Learning · Computer Science 2026-05-11 Xavier Sumba , Carles Balsells-Rodas , Yingzhen Li

Accurate Channel State Information (CSI) is critical for Hybrid Beamforming (HBF) tasks. However, obtaining high-resolution CSI remains challenging in practical wireless communication systems. To address this issue, we propose to utilize…

Systems and Control · Electrical Eng. & Systems 2025-11-11 Yuhang Li , Yang Lu , Bo Ai , Zhiguo Ding , Dusit Niyato , Arumugam Nallanathan

Hybrid beamforming (HBF) design is a crucial stage in millimeter wave (mmWave) multi-user multi-input multi-output (MU-MIMO) systems. However, conventional HBF methods are still with high complexity and strongly rely on the quality of…

Signal Processing · Electrical Eng. & Systems 2020-04-28 Shaocheng Huang , Yu Ye , Ming Xiao

We introduce a new paradigm for generative modeling built on Continuous Normalizing Flows (CNFs), allowing us to train CNFs at unprecedented scale. Specifically, we present the notion of Flow Matching (FM), a simulation-free approach for…

Machine Learning · Computer Science 2023-02-09 Yaron Lipman , Ricky T. Q. Chen , Heli Ben-Hamu , Maximilian Nickel , Matt Le

This work gives a blind beamforming strategy for intelligent reflecting surface (IRS), aiming to boost the received signal-to-noise ratio (SNR) by coordinating phase shifts across reflective elements in the absence of channel information.…

Information Theory · Computer Science 2022-11-04 Shuyi Ren , Kaiming Shen , Yaowen Zhang , Xin Li , Xin Chen , Zhi-Quan Luo

Advancements in 6G wireless technology have elevated the importance of beamforming, especially for attaining ultra-high data rates via millimeter-wave (mmWave) frequency deployment. Although promising, mmWave bands require substantial beam…

Networking and Internet Architecture · Computer Science 2024-07-31 Avi Deb Raha , Kitae Kim , Apurba Adhikary , Mrityunjoy Gain , Zhu Han , Choong Seon Hong

Due to power attenuation, improving transmission efficiency in the radio-frequency (RF) band remains a significant challenge, which hinders advancements in various fields of the Internet of Things (IoT), such as wireless power transfer…

Numerical Analysis · Mathematics 2025-01-28 Qingwei Jiang , Mingqing Liu , Mengyuan Xu , Wen Fang , Mingliang Xiong , Qingwen Liu , Shengli Zhou

Millimeter-wave (mmWave) and terahertz (THz) massive MIMO systems often rely on predefined beamforming codebooks, which are usually suboptimal in Non-Line-of-Sight (NLoS) conditions and for hardware-limited transceivers. Reinforcement…

Information Theory · Computer Science 2026-03-23 Anouar Nechi , Rainer Buchty , Mladen Berekovic , Saleh Mulhem

Electromagnetic (EM) world modeling is emerging as a foundational capability for environment-aware and embodiment-enabled wireless systems. However, most existing mmWave sensing solutions are designed for snapshot-based parameter estimation…

Emerging Technologies · Computer Science 2026-02-17 Pin-Han Ho , Haoran Mei , Limei Peng , Yiming Miao , Kairan Liang , Yan Jiao

Complexity reduction of optimal linear receiver is considered in a scenario where both the number of single-antenna user equipments (UEs) $K$ and base station (BS) antennas $N$ are large. Two-stage beamforming (TSB) greatly alleviates the…

Signal Processing · Electrical Eng. & Systems 2019-12-03 Hossein Asgharimoghaddam , Antti Tölli

Cognitive radio networks (CRNs) and millimeter wave (mmWave) communications are two major technologies to enhance the spectrum efficiency (SE). Considering that the SE improvement in the CRNs is limited due to the interference temperature…

Information Theory · Computer Science 2022-05-03 Xuewen Wu , Jingxiao Ma , Chenwei Gu , Xiaoping Xue , Xin Zeng

This paper investigates a novel generative artificial intelligence (GAI) empowered multi-user semantic communication system called semantic feature multiple access (SFMA) for video transmission, which comprises a base station (BS) and…

Signal Processing · Electrical Eng. & Systems 2024-12-31 Jiaxiang Wang , Yinchao Yang , Zhaohui Yang , Chongwen Huang , Mingzhe Chen , Zhaoyang Zhang , Mohammad Shikh-Bahaei

In this paper, we propose a novel symbiotic sensing and communication (SSAC) framework, comprising a base station (BS) and a passive sensing node. In particular, the BS transmits communication waveform to serve vehicle users (VUEs), while…

Signal Processing · Electrical Eng. & Systems 2024-08-29 Fanghao Xia , Zesong Fei , Xinyi Wang , Weijie Yuan , Qingqing Wu , Yuanwei Liu , Tony Q. S. Quek

Flow-based generative models, such as diffusion models and flow matching models, have achieved remarkable success in learning complex data distributions. However, a critical gap remains for their deployment in safety-critical domains: the…

Machine Learning · Computer Science 2026-03-02 Darshan Gadginmath , Ahmed Allibhoy , Fabio Pasqualetti

Hybrid beamforming (HBF) and antenna selection are promising techniques for improving the energy efficiency~(EE) of massive multiple-input multiple-output~(mMIMO) systems. However, the transmitter architecture may contain several parameters…

Signal Processing · Electrical Eng. & Systems 2024-07-01 Hamed Hojatian , Zoubeir Mlika , Jérémy Nadal , Jean-François Frigon , François Leduc-Primeau

As 5G networks rapidly expand and 6G technologies emerge, characterized by dense deployments, millimeter-wave communications, and dynamic beamforming, the need for scalable simulation tools becomes increasingly critical. These tools must…

Networking and Internet Architecture · Computer Science 2026-01-07 Mohammed Mallik , Guillaume Villemaud

We consider the design of multiple-input multiple-output communication systems with a linear precoder at the transmitter, zero-forcing decision feedback equalization (ZF-DFE) at the receiver, and a low-rate feedback channel that enables…

Information Theory · Computer Science 2008-04-16 Michael Botros Shenouda , Timothy Davidson
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