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The rapid proliferation of devices and increasing data traffic in cellular networks necessitate advanced solutions to meet these escalating demands. Massive MIMO (Multiple Input Multiple Output) technology offers a promising approach,…

信号处理 · 电气工程与系统科学 2025-05-09 Adel Heidari , Agrim Gupta , Ish Kumar Jain , Dinesh Bharadia

Cell-free massive multiple-input multiple-output (CF mMIMO) systems are expected to provide faster and more robust connections to user equipments (UEs) by cooperation of a massive number of distributed access points, and to be one of the…

信号处理 · 电气工程与系统科学 2021-10-05 Masaaki Ito , Issei Kanno , Takeo Ohseki , Kosuke Yamazaki , Yoji Kishi , Thomas Choi , Andreas F. Molisch

CF-mMIMO systems are a promising solution to enhance the performance in 6G wireless networks. Its distributed nature of the architecture makes it highly reliable, provides sufficient coverage and allows higher performance than cellular…

信号处理 · 电气工程与系统科学 2024-02-12 Ramprasad Raghunath , Bile Peng , Eduard A. Jorswieck

In this paper, we propose network massive multiple- input multiple-output (MIMO) systems, where three radio units (RUs) connected via one digital unit (DU) support multiple user equipments (UEs) at a cell-boundary through the same radio…

信息论 · 计算机科学 2012-09-20 Changwoo Lee , Chan-Byoung Chae , Taehyung Kim , Sooyong Choi , Juho Lee

In this paper, we address the problem of power-efficient resource management in Cloud Radio Access Networks (C-RANs). Specifically, we consider the case where Remote Radio Heads (RRHs) perform data transmission, and signal processing is…

网络与互联网体系结构 · 计算机科学 2019-04-25 Salvatore D'Oro , Marcelo Antonio Marotta , Cristiano Bonato Both , Luiz DaSilva , Sergio Palazzo

Massive multiple-input multiple-output (mMIMO) has been the core of 5G due to its ability to improve spectral efficiency and spatial multiplexing significantly; however, cell-edge users still experience performance degradation due to…

信号处理 · 电气工程与系统科学 2025-04-07 Ozan Alp Topal , Özlem Tuğfe Demir , Emil Björnson , Cicek Cavdar

Massive MIMO can greatly increase both spectral and transmit-energy efficiency. This is achieved by allowing the number of antennas and RF chains to grow very large. However, the challenges include high system complexity and hardware energy…

信息论 · 计算机科学 2016-11-17 Xiang Gao , Ove Edfors , Fredrik Tufvesson , Erik G. Larsson

In many wireless communication applications, it is desirable to transmit the same data to multiple user equipments (UEs). Physical layer multicasting presents an efficient transmission topology to exploit the beamforming capabilities at the…

信号处理 · 电气工程与系统科学 2025-09-30 Mahmoud Zaher , Emil Björnson , Marina Petrova

The use of a very large number of antennas at each base station site (referred to as "Massive MIMO") is one of the most promising approaches to cope with the predicted wireless data traffic explosion. In combination with Time Division…

网络与互联网体系结构 · 计算机科学 2015-02-10 Dilip Bethanabhotla , Ozgun Bursalioglu , Haralabos Papadopoulos , Giuseppe Caire

In this paper, we aim to maximize the energy efficiency of cellular wireless networks. Specifically, we address the power allocation problem in multi-cell multi-carrier systems. Considering realistic base station power consumption models,…

网络与互联网体系结构 · 计算机科学 2016-10-18 Kemal Davaslioglu , Cemil Can Coskun , Ender Ayanoglu

Due to the unique physical-layer characteristics associated with MIMO and cognitive radio (CR), the network performance is tightly coupled with mechanisms at the physical, link, network, and transport layers. In this paper, we consider an…

网络与互联网体系结构 · 计算机科学 2016-11-17 Weiqiang Xu , Wenchu Yuan , Qingjiang Shi , Xiaodong Wang , Yake Zhang

We consider a cell-free massive multiple-input multiple-output (MIMO) network utilizing a virtually full-duplex (vFD) mode, where access points (APs) with a downlink (DL) mode and those with an uplink (UL) mode simultaneously serve DL and…

信息论 · 计算机科学 2022-05-16 Mohammadali Mohammadi , Tung T. Vu , Behnaz Naderi Beni , Hien Quoc Ngo , Michail Matthaiou

Cell-free (CF) massive multiple-input multipleoutput (MIMO) provides a ubiquitous coverage to user equipments (UEs) but it is also susceptible to interference. Ratesplitting (RS) effectively extracts data by decoding interference, yet its…

信息论 · 计算机科学 2024-09-25 Jiakang Zheng , Jiayi Zhang , Hongyang Du , Ruichen Zhang , Dusit Niyato , Octavia A. Dobre , Bo Ai

Cell-free massive multiple-input multiple-output (CFmMIMO) is a paradigm that can improve users' spectral efficiency (SE) far beyond traditional cellular networks. Increased spatial diversity in CFmMIMO is achieved by spreading the antennas…

信号处理 · 电气工程与系统科学 2024-08-01 Vida Ranjbar , Robbert Beerten , Marc Moonen , Sofie Pollin

One of the most important challenges in the fifth generation (5G) of telecommunication systems is the efficiency of energy and spectrum. Massive multiple-input multiple-output (MIMO) systems have been proposed by researchers to resolve…

信号处理 · 电气工程与系统科学 2023-11-28 Abdolrasoul Sakhaei Gharagezlou , Nima Imani , Mahdi Nangir

This paper explores the application of uplink fronthaul compression techniques within Open RAN (O-RAN) to mitigate fronthaul load in decentralized distributed MIMO (DD-MIMO) systems. With the ever-increasing demand for high data rates and…

信号处理 · 电气工程与系统科学 2025-07-08 Mostafa Rahmani , Junbo Zhao , Vida Ranjbar , Ahmed Al-Tahmeesschi , Hamed Ahmadi , Sofie Pollin , Alister G. Burr

Cell-free wireless communication is envisioned as one of the most promising network architectures, which can achieve stable and uniform communication performance while improving the system energy and spectrum efficiency. The deployment of…

信号处理 · 电气工程与系统科学 2024-06-05 Zhuoyin Dai , Jingran Xu , Xiaoli Xu , Ruoguang Li , Yong Zeng

The limited fronthaul capacity imposes a challenge on the uplink of centralized radio access network (C-RAN). We propose to boost the fronthaul capacity of massive multiple-input multiple-output (MIMO) aided C-RAN by globally optimizing the…

信息论 · 计算机科学 2019-01-01 Jiankang Zhang , Sheng Chen , Xinying Guo , Jia Shi , Lajos Hanzo

A hybrid cloud radio access network (H-CRAN) architecture has been proposed to alleviate the midhaul capacity limitation in C-RAN. In this architecture, functional splitting is utilized to distribute the processing functions between a…

网络与互联网体系结构 · 计算机科学 2019-07-02 Ajay Sriram , Meysam Masoudi , Abdulrahman Alabbasi , Cicek Cavdar

On the Optimizing of Wireless Networks and toward improving the future 5th Generation mobile Network Infrastructure, we propose a novel infrastructure that can be the next Smart City Network. Our proposed Infrastructure takes into…

网络与互联网体系结构 · 计算机科学 2016-06-08 Ahmad Abboud , Jean-Pierre Cances , Vahid Meghdadi , Ali Jaber