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3D ultrasound (US) is widely used due to its rich diagnostic information, portability and low cost. Automated standard plane (SP) localization in US volume not only improves efficiency and reduces user-dependence, but also boosts 3D US…

Computer Vision and Pattern Recognition · Computer Science 2020-07-31 Yuhao Huang , Xin Yang , Rui Li , Jikuan Qian , Xiaoqiong Huang , Wenlong Shi , Haoran Dou , Chaoyu Chen , Yuanji Zhang , Huanjia Luo , Alejandro Frangi , Yi Xiong , Dong Ni

Multi-agent reinforcement learning (MARL) studies crucial principles that are applicable to a variety of fields, including wireless networking and autonomous driving. We propose a photonic-based decision-making algorithm to address one of…

Machine Learning · Computer Science 2024-07-15 Shun Kotoku , Takatomo Mihana , André Röhm , Ryoichi Horisaki

Safety and scalability are two critical challenges faced by practical Multi-Agent Systems (MAS). However, existing Multi-Agent Reinforcement Learning (MARL) algorithms that rely solely on reward shaping are ineffective in ensuring safety,…

Multiagent Systems · Computer Science 2025-04-02 Haikuo Du , Fandi Gou , Yunze Cai

The next-generation wireless technologies, including beyond 5G and 6G networks, are paving the way for transformative applications such as vehicle platooning, smart cities, and remote surgery. These innovations are driven by a vast array of…

Multiagent Systems · Computer Science 2026-01-05 Eslam Eldeeb , Hirley Alves

In this paper, we investigate the performance of cell-free massive MIMO systems with massive connectivity. With the generalized approximate message passing (GAMP) algorithm, we obtain the minimum mean-squared error (MMSE) estimate of the…

Information Theory · Computer Science 2021-05-17 Mangqing Guo , M. Cenk Gursoy

As one of the core technologies for 5G systems, massive multiple-input multiple-output (MIMO) introduces dramatic capacity improvements along with very high beamforming and spatial multiplexing gains. When developing efficient physical…

Information Theory · Computer Science 2023-11-01 Hengtao He , Xianghao Yu , Jun Zhang , Shenghui Song , Khaled B. Letaief

Cooperative multi-agent reinforcement learning (MARL) has achieved significant results, most notably by leveraging the representation-learning abilities of deep neural networks. However, large centralized approaches quickly become…

Multiagent Systems · Computer Science 2022-12-05 Nikunj Gupta , G Srinivasaraghavan , Swarup Kumar Mohalik , Nishant Kumar , Matthew E. Taylor

Multi-Agent Reinforcement Learning (MARL) has recently emerged as a significant area of research. However, MARL evaluation often lacks systematic diversity, hindering a comprehensive understanding of algorithms' capabilities. In particular,…

We consider the problem of multi-agent navigation and collision avoidance when observations are limited to the local neighborhood of each agent. We propose InforMARL, a novel architecture for multi-agent reinforcement learning (MARL) which…

Multiagent Systems · Computer Science 2023-05-17 Siddharth Nayak , Kenneth Choi , Wenqi Ding , Sydney Dolan , Karthik Gopalakrishnan , Hamsa Balakrishnan

Mapping deep neural networks (DNNs) to hardware is critical for optimizing latency, energy consumption, and resource utilization, making it a cornerstone of high-performance accelerator design. Due to the vast and complex mapping space,…

This paper investigates a cell-free massive MIMO (multiple-input multiple-output) system where distributed access points (APs) perform integrated sensing and communications (ISAC) tasks, enabling simultaneous user communication and target…

Information Theory · Computer Science 2025-03-11 Sergi Liesegang , Stefano Buzzi , Carmen D'Andrea

This paper investigates multi-target detection in an integrated sensing and communication (ISAC) system within a cell-free massive MIMO (CF-mMIMO) framework. We adopt a user-centric approach for communication user equipments (UEs) and a…

Signal Processing · Electrical Eng. & Systems 2025-07-24 Zinat Behdad , Ozlem Tugfe Demir , Ki Won Sung , Cicek Cavdar

The combination of cell-free massive multiple-input multiple-output (CF-mMIMO) and reconfigurable intelligent surface (RIS) is envisioned as a promising paradigm to improve network capacity and enhance coverage capability. However, to reap…

Information Theory · Computer Science 2022-07-07 Xinying Ma , Deyou Zhang , Ming Xiao , Chongwen Huang , Zhi Chen

In this paper, we consider power allocation and antenna activation of cell-free massive multiple-input multiple-output (CFmMIMO) systems. We first derive closed-form expressions for the system spectral efficiency (SE) and energy efficiency…

Signal Processing · Electrical Eng. & Systems 2026-04-13 Phuong Nam Tran , Nhan Thanh Nguyen , Hien Quoc Ngo , Markku Juntti

In cooperative multi-agent reinforcement learning (MARL), the permutation problem where the state space grows exponentially with the number of agents reduces sample efficiency. Additionally, many existing architectures struggle with…

Machine Learning · Computer Science 2025-03-18 Hyunwoo Park , Baekryun Seong , Sang-Ki Ko

Cell-free massive multiple-input multiple-output (MIMO) is a promising technology for next-generation communication systems. This work proposes a novel partially coherent (PC) transmission framework to cope with the challenge of phase…

Information Theory · Computer Science 2024-04-04 Unnikrishnan Kunnath Ganesan , Tung Thanh Vu , Erik G. Larsson

Scalability is the key roadstone towards the application of cooperative intelligent algorithms in large-scale networks. Reinforcement learning (RL) is known as model-free and high efficient intelligent algorithm for communication problems…

Signal Processing · Electrical Eng. & Systems 2021-11-08 Fenghe Hu , Yansha Deng , A. Hamid Aghvami

Many scenarios in mobility and traffic involve multiple different agents that need to cooperate to find a joint solution. Recent advances in behavioral planning use Reinforcement Learning to find effective and performant behavior…

Artificial Intelligence · Computer Science 2022-08-03 Lukas M. Schmidt , Johanna Brosig , Axel Plinge , Bjoern M. Eskofier , Christopher Mutschler

We approach autonomous drone-based reforestation with a collaborative multi-agent reinforcement learning (MARL) setup. Agents can communicate as part of a dynamically changing network. We explore collaboration and communication on the back…

Artificial Intelligence · Computer Science 2022-11-29 Philipp Dominic Siedler

Cell-free massive multi-input multi-output (MIMO) has recently attracted much attention, attributed to its potential to deliver uniform service quality. However, the adoption of a cell-free architecture raises concerns about the high…

Information Theory · Computer Science 2024-06-04 Wei Jiang , Hans D. Schotten