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Frequency range 2 (FR2) has become an integral part of 5G networks to fulfill the ever-increasing demand for data hungry-applications. However, radio signals in FR2 experience high path and diffraction loss, which also pronounces the…

Networking and Internet Architecture · Computer Science 2023-06-27 Subhyal Bin Iqbal , Salman Nadaf , Umur Karabulut , Philipp Schulz , Anna Prado , Gerhard P. Fettweis , Wolfgang Kellerer

This paper proposes a cellular network exploiting millimeter-wave (mmWave) and ultra-densified base stations (BSs) to achieve the far-reaching 5G aim in downlink average rate. The mmWave overlaid network however incurs a pitfall that its…

Networking and Internet Architecture · Computer Science 2015-04-21 Jihong Park , Seong-Lyun Kim , Jens Zander

Machine learning (ML) methods are ubiquitous in wireless communication systems and have proven powerful for applications including radio-frequency (RF) fingerprinting, automatic modulation classification, and cognitive radio. However, the…

Signal Processing · Electrical Eng. & Systems 2021-06-29 Hsuan-Tung Peng , Joshua Lederman , Lei Xu , Thomas Ferreira de Lima , Chaoran Huang , Bhavin Shastri , David Rosenbluth , Paul Prucnal

This paper studies the transmit power optimization in multi-cell massive multiple-input multiple-output (MIMO) systems. Network-wide max-min fairness (NW-MMF) and network-wide proportional fairness (NW-PF) are two well-known power control…

Information Theory · Computer Science 2021-05-25 Amin Ghazanfari , Hei Victor Cheng , Emil Björnson , Erik G. Larsson

This paper presents a new system model to evaluate the capacity and power consumption of multi-layer 6G networks utilising the upper mid-band (FR3). The model captures heterogeneous 4G, 5G, and 6G deployments, analyzing their performance…

Networking and Internet Architecture · Computer Science 2024-11-15 David López-Pérez , Nicola Piovesan , Giovanni Geraci

We consider a dense fading multi-user network with multiple active multi-antenna source-destination pair terminals communicating simultaneously through a large common set of $K$ multi-antenna relay terminals in the full spatial multiplexing…

Information Theory · Computer Science 2016-11-15 Ozgur Oyman , Arogyaswami J. Paulraj

In this paper, a novel bandwidth negotiation mechanism is proposed for massive devices wireless spectrum sharing, in which individual device locally negotiates bandwidth usage with neighbor devices and globally optimal spectrum utilization…

Signal Processing · Electrical Eng. & Systems 2021-05-03 Tianhao Li , Yu Tian , Shuai Yuan , Naijin Liu

The goal of this study is to improve the accuracy of millimeter wave received power prediction by utilizing camera images and radio frequency (RF) signals, while gathering image inputs in a communication-efficient and privacy-preserving…

Networking and Internet Architecture · Computer Science 2020-03-04 Yusuke Koda , Jihong Park , Mehdi Bennis , Koji Yamamoto , Takayuki Nishio , Masahiro Morikura

This work proposes a mixed learning-based and optimization-based approach to the weighted-sum-rates beamforming problem in a multiple-input multiple-output (MIMO) wireless network. The conventional methods, i.e., the fractional programming…

Information Theory · Computer Science 2026-01-07 Jianhang Zhu , Tsung-Hui Chang , Liyao Xiang , Kaiming Shen

The reconfigurable intelligent surface is a promising technology for the manipulation and control of wireless electromagnetic signals. In particular, it has the potential to provide significant performance improvements for wireless…

Signal Processing · Electrical Eng. & Systems 2022-09-14 Hamidreza Taghvaee , Akshay Jain , Sergi Abadal , Gabriele Gradoni , Eduard Alarcón , Albert Cabellos-Aparicio

The uplink of 5G networks allows selecting the transmit waveform between cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) and discrete Fourier transform spread OFDM (DFT-S-OFDM), which is appealing for cell-edge users…

The users at cell edge of a massive multiple-input multiple-output (MIMO) system suffer from severe pilot contamination, which leads to poor quality of service (QoS). In order to enhance the QoS for these edge users, soft pilot reuse (SPR)…

Information Theory · Computer Science 2015-07-16 Xudong Zhu , Zhaocheng Wang , Chen Qian , Linglong Dai , Jinhui Chen , Sheng Chen , Lajos Hanzo

Supporting immense throughput and ubiquitous connectivity holds paramount importance for future wireless networks. To this end, this letter focuses on how the spatial beams configured for legacy near-field (NF) users can be leveraged to…

Information Theory · Computer Science 2024-12-03 Jiasi Zhou , Cong Zhou , Yijie Mao , Chintha Tellambura

With the prevalence of Large Learning Models (LLM), Split Federated Learning (SFL), which divides a learning model into server-side and client-side models, has emerged as an appealing technology to deal with the heavy computational burden…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-01-03 Yipeng Liang , Qimei Chen , Guangxu Zhu , Muhammad Kaleem Awan , Hao Jiang

Energy harvesting emerges as a potential solution for prolonging the lifetime of the energy-constrained mobile wireless devices. In this paper, we focus on Radio Frequency (RF) energy harvesting for multiuser multicarrier mobile wireless…

Networking and Internet Architecture · Computer Science 2017-07-24 Bassem Khalfi , Bechir Hamdaoui , Mahdi Ben Ghorbel , Mohsen Guizani , Xi Zhang , Nizar Zorba

Spectrum refarming (SR) refers to a radio resource management technique which allows different generations of cellular networks to operate in the same radio spectrum. In this paper, an underlay SR model is proposed, in which an Orthogonal…

Information Theory · Computer Science 2014-07-04 Shiying Han , Ying-Chang Liang , Boon-Hee Soong

In this paper, we introduce a novel approach for optimal resource allocation with frequency reuse for users with elastic and inelastic traffic in cellular networks. In our model, we represent users' applications running on different user…

Networking and Internet Architecture · Computer Science 2016-10-25 Ahmed Abdelhadi , T. Charles Clancy

This paper proposes a multi-level cooperative architecture to balance the spectral efficiency and scalability of cell-free massive multiple-input multiple-output (MIMO) systems. In the proposed architecture, spatial expansion units (SEUs)…

Information Theory · Computer Science 2023-02-17 Jiamin Li , Xiaoyu Sun , Pengcheng Zhu , Dongming Wang , Xiaohu You

This paper investigates a smart spectrum-sharing framework for reconfigurable intelligent surface (RIS)-aided local high-quality wireless networks (LHQWNs) within a mobile network operator (MNO) ecosystem. Although RISs are often considered…

Systems and Control · Electrical Eng. & Systems 2026-03-27 Hamid Reza Hashempour , Mina Khadem , Eduard A. Jorswieck

Modern magnetic resonance imaging (MRI) relies on application-specific multi-channel receive coils to achieve high performance, but these coils are typically costly, rigid, and difficult to generalize across anatomies. Recent wireless,…

Medical Physics · Physics 2026-05-26 Yuhan Liu , Xia Zhu , Ke Wu , Artem Kaliaev , Christina A. LeBedis , Stephan W. Anderson , Xin Zhang
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