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Massive multi-input multi-output (MIMO) has evolved along two tracks: cellular and cell-free, each with unique advantages and limitations. The cellular approach suffers from worse user spectral efficiency at cell edges, whereas the…

信息论 · 计算机科学 2025-06-30 Wei Jiang , Hans D. Schotten

We study algorithms for carrier and rate allocation in cellular systems with distributed components such as a heterogeneous LTE system with macrocells and femtocells. Existing work on LTE systems often involves centralized techniques or…

网络与互联网体系结构 · 计算机科学 2013-01-04 Matthew Andrews , Lisa Zhang

The Logical Execution Time (LET) programming model has recently received considerable attention, particularly because of its timing and dataflow determinism. In LET, task computation appears always to take the same amount of time (called…

系统与控制 · 电气工程与系统科学 2024-03-11 Sen Wang , Dong Li , Ashrarul H. Sifat , Shao-Yu Huang , Xuanliang Deng , Changhee Jung , Ryan Williams , Haibo Zeng

One of the main goals of the future wireless networks is improving the users quality of experience (QoE). In this paper, we consider the problem of QoE-based resource allocation in the downlink of a massive multiple-input multiple-output…

信息论 · 计算机科学 2018-05-18 Hadis Abarghouyi , S. Mohammad Razavizadeh , Emil Bjornson

Till today we dreamt of imperceptible delay in a network. The computer science research grows today faster than ever offering more and more services (computational representational, graphical, intelligent implication etc) to its user. But…

网络与互联网体系结构 · 计算机科学 2011-10-18 Soumen Kanrar , M Siraj

Federated learning systems have been identified as an efficient approach to scaling distributed model training with a large amount of participants or data owners while guaranteeing data privacy. To apply the current most popular pre-trained…

分布式、并行与集群计算 · 计算机科学 2025-03-04 Qianli Liu , Zhaorui Zhang , Xin Yao , Benben Liu

Many data applications in the next generation cellular networks, such as content precaching and video progressive downloading, require flow-level quality of service (QoS) guarantees. One such requirement is deadline, where the transmission…

信息论 · 计算机科学 2012-10-04 Huasen Wu , Youguang Zhang , Xin Liu

Caching the content closer to the user equipments (UEs) in heterogenous cellular networks (HetNets) improves user-perceived Quality-of-Service (QoS) while lowering the operators backhaul usage/costs. Nevertheless, under the current…

信息论 · 计算机科学 2019-02-01 M. G. Khoshkholgh , Keivan Navaie , Kang G. Shin , V. C. M. Leung , Halim Yanikomeroglu

Large language model (LLM) applications are increasingly executed as heterogeneous multi-stage workflows rather than isolated inference calls. In these workflow directed acyclic graphs (DAGs), scheduling decisions affect not only the…

分布式、并行与集群计算 · 计算机科学 2026-05-11 Zirui Huang , Yi-Xiang Hu , Feng Wu , Xiangyang Li

System-centric modeling and analysis are of key significance in planning and optimizing cellular networks. In this paper, we provide a mathematical analysis of performance modeling for LTE networks. The system model characterizes the…

信息论 · 计算机科学 2012-01-20 Iana Siomina , Di Yuan

With the rapidly increasing number of deployed LTE femtocell base stations (FBS), energy consumption of femtocell networks has become a serious environmental issue. Therefore, energy-efficient protocols are needed to balance the trade-off…

网络与互联网体系结构 · 计算机科学 2015-08-07 Ying Wang , Xiangming Dai , Jason Min Wang , Brahim Bensaou

We address the limitations of current LLM serving with a dual-counter framework separating user and operator perspectives. The User Fairness Counter measures quality of service via weighted tokens and latency; the Resource Fairness Counter…

分布式、并行与集群计算 · 计算机科学 2025-08-26 Zhixiang Wei , James Yen , Jingyi Chen , Ziyang Zhang , Zhibai Huang , Chen Chen , Xingzi Yu , Yicheng Gu , Chenggang Wu , Yun Wang , Mingyuan Xia , Jie Wu , Hao Wang , Zhengwei Qi

As single-center computing approaches power constraints, decentralized training becomes essential. However, traditional Reinforcement Learning (RL) methods, crucial for enhancing large model post-training, cannot adapt to decentralized…

Caching popular contents at base stations (BSs) is a promising way to unleash the potential of cellular heterogeneous networks (HetNets), where backhaul has become a bottleneck. In this paper, we compare a cache-enabled HetNet where a tier…

信息论 · 计算机科学 2016-03-01 Dong Liu , Chenyang Yang

Large-scale heterogeneous multiagent systems feature various realistic factors in the real world, such as agents with diverse abilities and overall system cost. In comparison to homogeneous systems, heterogeneous systems offer significant…

人工智能 · 计算机科学 2024-03-28 Qingxu Fu , Zhiqiang Pu , Min Chen , Tenghai Qiu , Jianqiang Yi

We develop a framework for downlink heterogeneous cellular networks with line-of-sight (LoS) and non-line-of-sight (NLoS) transmissions. Using stochastic geometry, we derive tight approximation of achievable downlink rate that enables us to…

信息论 · 计算机科学 2017-01-13 Qi Zhang , Howard H. Yang , Tony Q. S. Quek , Jemin Lee

This paper presents an innovative approach to 3D mixed-size placement in heterogeneous face-to-face (F2F) bonded 3D ICs. We propose an analytical framework that utilizes a dedicated density model and a bistratal wirelength model,…

硬件体系结构 · 计算机科学 2024-08-14 Yuxuan Zhao , Peiyu Liao , Siting Liu , Jiaxi Jiang , Yibo Lin , Bei Yu

With growing deployment of Internet of Things (IoT) and machine learning (ML) applications, which need to leverage computation on edge and cloud resources, it is important to develop algorithms and tools to place these distributed…

分布式、并行与集群计算 · 计算机科学 2021-12-30 Xiangchen Zhao , Diyi Hu , Bhaskar Krishnamachari

We consider a user-centric cell-free massive MIMO wireless network with $L$ remote radio units, each with $M$ antennas, serving $K_{\rm tot}$ user equipments (UEs). Most of the literature considers the regime $LM \gg K_{\rm tot}$, where the…

信息论 · 计算机科学 2024-04-10 Fabian Göttsch , Noboru Osawa , Issei Kanno , Takeo Ohseki , Giuseppe Caire

Boosting data rates in LTE mobile networks is one of the key features of LTE-Advanced. This improved user experience is achieved by Carrier Aggregation (CA), in which the available spectrum of an operator is bundled out of several frequency…

网络与互联网体系结构 · 计算机科学 2020-02-21 Robert Falkenberg , Benjamin Sliwa , Christian Wietfeld