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In this work, two problems associated with a downlink multi-user system are considered with the aid of intelligent reflecting surface (IRS): weighted sum-rate maximization and weighted minimal-rate maximization. For the first problem, a…

Information Theory · Computer Science 2022-01-25 Liyue Zhang , Qing Wang , Haozhi Wang , Peng Chen , Hua Chen , Wei Liu , Zhiqiang Wu

Stacked intelligent metasurface (SIM) is an emerging design that consists of multiple layers of metasurfaces. A SIM enables holographic multiple-input multiple-output (HMIMO) precoding in the wave domain, which results in the reduction of…

Simulated annealing (SA) attracts more attention among classical heuristic algorithms because the solution of the combinatorial optimization problem can be naturally mapped to the ground state of the Ising Hamiltonian. However, in practical…

Artificial Intelligence · Computer Science 2022-03-28 Yunuo Cen , Debasis Das , Xuanyao Fong

The rapid scaling of models has led to prohibitively high training and fine-tuning costs. A major factor accounting for memory consumption is the widespread use of stateful optimizers (e.g., Adam), which maintain auxiliary information of…

Machine Learning · Computer Science 2025-06-10 Cong Xu , Wenbin Liang , Mo Yu , Anan Liu , Ke-Yue Zhang , Shunli Wang , Lizhuang Ma , Jianyong Wang , Jun Wang , Wei Zhang

With IoT systems' increasing scale and complexity, maintenance of a large number of nodes using stationary devices is becoming increasingly difficult. Hence, mobile devices are being employed that can traverse through a set of target…

Quantum Physics · Physics 2023-10-30 Mayukh Sarkar , Jitesh Pradhan , Anil Kumar Singh , Hathiram Nenavath

This paper investigates a communication-efficient split learning (SL) over multiple-input multiple-output (MIMO) communication system. In particular, we mathematically decompose the inter-layer connection of a neural network (NN) to a…

Signal Processing · Electrical Eng. & Systems 2022-10-11 Yuzhi Yang , Zhaoyang Zhang , Zhaohui Yang

Pixel antenna is a promising technology to enhance the wireless communication data rate by adaptively reconfiguring each antenna's radiation pattern via a so-called antenna coding technique which controls the states of switches connected to…

Information Theory · Computer Science 2025-11-18 Shenrui Lin , Shuowen Zhang

Large language models (LLMs) with mixture-of-experts (MoE) architectures achieve remarkable scalability by sparsely activating a subset of experts per token, yet their frequent expert switching creates memory bandwidth bottlenecks that…

Machine Learning · Computer Science 2026-05-13 Wenyong Zhou , Yuannuo Feng , Yizhe Chen , Taiqiang Wu , Wendong Xu , Wenbo Qi , Zhengwu Liu , Wang Kang , Ngai Wong

The high computational complexity and energy consumption of artificial intelligence (AI) algorithms hinder their application in augmented reality (AR) systems. However, mobile edge computing (MEC) makes it possible to solve this problem.…

Networking and Internet Architecture · Computer Science 2023-01-04 Guangjin Pan , Heng Zhang , Shugong Xu , Shunqing Zhang , Xiaojing Chen

Given a query and dataset, the optimal way of answering the query is to make use all the information available. Modern LLMs exhibit impressive ability to memorize training data, but data not deemed important during training is forgotten,…

Computation and Language · Computer Science 2025-06-17 Evan Becker , Benjamin Bowman , Matthew Trager , Tian Yu Liu , Luca Zancato , Wei Xia , Stefano Soatto

Large multiple-input multiple-output (MIMO) appears in massive multi-user MIMO and randomly-spread code-division multiple access (CDMA)-based wireless systems. In order to cope with the excessively high complexity of optimal data detection…

Information Theory · Computer Science 2018-11-06 Charles Jeon , Ramina Ghods , Arian Maleki , Christoph Studer

Artificial intelligence (AI) models are currently driven by a significant upscaling of their complexity, with massive matrix-multiplication workloads representing the major computational bottleneck. In-memory computing (IMC) architectures…

Hardware Architecture · Computer Science 2026-04-23 Shady Agwa , Yihan Pan , Georgios Papandroulidakis , Themis Prodromakis

Combinatorial optimization (CO) problems, central to decision-making scenarios like logistics and manufacturing, are traditionally solved using problem-specific algorithms requiring significant domain expertise. While large language models…

Artificial Intelligence · Computer Science 2025-09-24 Xia Jiang , Yaoxin Wu , Minshuo Li , Zhiguang Cao , Yingqian Zhang

Holographic multiple-input multiple-output (HMIMO) is a potential technique for improving spectral efficiency (SE) while maintaining low hardware cost and power consumption. Although conventional alternating optimization (AO) methods are…

Signal Processing · Electrical Eng. & Systems 2026-01-29 Shiyong Chen , Shengqian Han

Processing-in-Memory (PIM) architectures offer promising solutions for efficiently handling AI applications in energy-constrained edge environments. While traditional PIM designs enhance performance and energy efficiency by reducing data…

Hardware Architecture · Computer Science 2025-12-09 Sangmin Jeon , Kangju Lee , Kyeongwon Lee , Woojoo Lee

Compute-in-memory (CIM) accelerators for spiking neural networks (SNNs) are promising solutions to enable $\mu$s-level inference latency and ultra-low energy in edge vision applications. Yet, their current lack of flexibility at both the…

Hardware Architecture · Computer Science 2024-10-31 Nicolas Chauvaux , Adrian Kneip , Christoph Posch , Kofi Makinwa , Charlotte Frenkel

The human brain simultaneously optimizes synaptic weights and topology by growing, pruning, and strengthening synapses while performing all computation entirely in memory. In contrast, modern artificial-intelligence systems separate weight…

Hardware Architecture · Computer Science 2025-06-17 Songqi Wang , Yue Zhang , Jia Chen , Xinyuan Zhang , Yi Li , Ning Lin , Yangu He , Jichang Yang , Yingjie Yu , Yi Li , Zhongrui Wang , Xiaojuan Qi , Han Wang

Large language models (LLMs) have demonstrated exceptional proficiency in understanding and generating human language, but efficient inference on resource-constrained embedded devices remains challenging due to large model sizes and…

Hardware Architecture · Computer Science 2025-07-15 Weihong Xu , Haein Choi , Po-kai Hsu , Shimeng Yu , Tajana Rosing

Stacked Intelligent Metasurfaces (SIM) have emerged as a revolutionary architecture for next-generation wireless communications, offering wave-domain signal processing capabilities with significantly reduced hardware complexity compared to…

Information Theory · Computer Science 2026-01-22 Yuhui Jiao , Qian Zhang , Xuejun Cheng , Yunxiao Li , Yufei Zhao , Ju Liu , Yong Liang Guan

Extra-large scale MIMO (XL-MIMO) is a key technology for meeting sixth-generation (6G) requirements for high-rate connectivity and uniform quality of service (QoS); however, its deployment is challenged by the prohibitive complexity of…

Signal Processing · Electrical Eng. & Systems 2026-01-21 Gabriel Avanzi Ubiali , José Carlos Marinello Filho , Taufik Abrão