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Massive multiple-input multiple-output (MIMO) systems are strong candidates for future fifth generation (5G) heterogeneous cellular networks. For 5G, a network densification with a high number of different classes of users and data service…

信息论 · 计算机科学 2016-11-18 L. Arevalo , R. C. de Lamare , M. Haardt , R. Sampaio-Neto

In this work, a scalable and modular architecture for massive MIMO base stations with distributed processing is proposed. New antennas can readily be added by adding a new node as each node handles all the additional involved processing.…

信号处理 · 电气工程与系统科学 2018-01-25 Erik Bertilsson , Oscar Gustafsson , Erik G. Larsson

A detection scheme for uplink massive MIMO, dubbed massive-BLAST or M-BLAST, is proposed. The derived algorithm is an enhancement of the well-known soft parallel interference cancellation. Using computer simulations in massive MIMO…

信息论 · 计算机科学 2017-12-05 Ori Shental , Sivarama Venkatesan , Alexei Ashikhmin , Reinaldo A. Valenzuela

In this paper, we analyze the achievable rate of the uplink of a single-cell multi-user distributed massive multiple-input-multiple-output (MIMO) system. The multiple users are equipped with single antenna and the base station (BS) is…

信息论 · 计算机科学 2016-11-17 Ang Yang , Yindi Jing , Chengwen Xing , Zesong Fei , Jingming Kuang

Cell-free Massive MIMO is considered as a promising technology for satisfying the increasing number of users and high rate expectations in beyond-5G networks. The key idea is to let many distributed access points (APs) communicate with all…

信息论 · 计算机科学 2019-09-19 Emil Björnson , Luca Sanguinetti

Massive multi-user multiple-input multiple-output (MU-MIMO) systems enable high spatial resolution, high spectral efficiency, and improved link reliability compared to traditional MIMO systems due to the large number of antenna elements…

信号处理 · 电气工程与系统科学 2024-07-19 Brikena Kaziu , Nikita Shanin , Danilo Spano , Li Wang , Wolfgang Gerstacker , Robert Schober

Massive multi-user (MU) multiple-input multiple-output (MIMO) promises significant gains in spectral efficiency compared to traditional, small-scale MIMO technology. Linear equalization algorithms, such as zero forcing (ZF) or minimum…

信息论 · 计算机科学 2018-11-12 Charles Jeon , Kaipeng Li , Joseph R. Cavallaro , Christoph Studer

While more and more antennas are integrated into single mobile user equipment to increase communication quality and throughput, the number of antennas used for transmission is commonly restricted due to the concerns on hardware complexity…

网络与互联网体系结构 · 计算机科学 2019-02-12 Aleksei Fedorov , Haibo Zhang , Galina Sidorenko , Bo Yang

In this paper, the downlink of a typical massive MIMO system is studied when each base station is composed of three antenna arrays with directional antenna elements serving 120 degrees of the two-dimensional space. A lower bound for the…

信息论 · 计算机科学 2018-04-27 Shahram Shahsavari , Parisa Hassanzadeh , Alexei Ashikhmin , Elza Erkip

In massive multiple-input multiple-output (MIMO) systems, the large number of antennas would bring a great challenge for the acquisition of the accurate channel state information, especially in the frequency division duplex mode. To…

信号处理 · 电气工程与系统科学 2020-09-04 Yindi Yang , Shun Zhang , Feifei Gao , Chao Xu , Jianpeng Ma , Octavia A. Dobre

In this paper, we investigate a cell-free massive MIMO system with both access points (APs) and user equipments (UEs) equipped with multiple antennas over jointly-correlated Rayleigh fading channels. We study four uplink implementations,…

信息论 · 计算机科学 2022-03-18 Zhe Wang , Jiayi Zhang , Bo Ai , Chau Yuen , Mérouane Debbah

Typical massive multiple-input multiple-output (MIMO) architectures consider a centralized approach, in which all baseband data received by each antenna has to be sent to a central processing unit (CPU) to be processed. Due to the enormous…

信号处理 · 电气工程与系统科学 2023-05-01 Juan Vidal Alegría , Fredrik Rusek , Jesús Rodríguez Sánchez , Ove Edfors

We study downlink channel estimation in a multi-cell Massive multiple-input multiple-output (MIMO) system operating in time-division duplex. The users must know their effective channel gains to decode their received downlink data. Previous…

信息论 · 计算机科学 2021-11-30 Amin Ghazanfari , Trinh Van Chien , Emil Björnson , Erik G. Larsson

Even if massive multiple-input multiple-output (MIMO) can theoretically bring huge benefits, it incurs substantial hardware complexity and expensive hardware costs. To address these issues while maintaining the system performance…

信息论 · 计算机科学 2021-09-21 Xi Yang , Shi Jin , Geoffrey Ye Li , Xiao Li

This paper focuses on new communication paradigms arising in massive multiple-input-multiple-output systems where the antenna array at the base station is of extremely large dimension (xMaMIMO). Due to the extreme dimension of the array,…

信号处理 · 电气工程与系统科学 2018-10-05 Abolfazl Amiri , Marko Angjelichinoski , Elisabeth de Carvalho , Robert W. Heath

This paper considers the uplink of a massive MIMO communication system using 5G New Radio-compliant multiple access, which is to co-exist with a radar system using the same frequency band. A system model taking into account the…

信息论 · 计算机科学 2020-04-22 Carmen D'Andrea , Stefano Buzzi , Marco Lops

This paper investigates an uplink multiuser massive multiple-input multiple-output (MIMO) system with one-bit analog-to-digital converters (ADCs), in which $K$ users with a single-antenna communicate with one base station (BS) with $n_r$…

信息论 · 计算机科学 2017-02-03 Seonho Kim , Namyoon Lee , Songnam Hong

We study the performance of uplink transmission in a large-scale (massive) MIMO system, where all the transmitters have single antennas and the receiver (base station) has a large number of antennas. Specifically, we analyze achievable…

信息论 · 计算机科学 2013-11-07 Zhengdao Wang

Massive Multiple-Input Multiple-Output (massive MIMO) is a variant of multi-user MIMO in which the number of antennas at each Base Station (BS) is very large and typically much larger than the number of users simultaneously served. Massive…

信息论 · 计算机科学 2017-08-16 Mahdi Barzegar Khalilsarai , Saeid Haghighatshoar , Giuseppe Caire

Media-based modulation (MBM) is a novel modulation technique that can improve the spectral efficiency of the existing wireless systems. In MBM, multiple radio frequency (RF) mirrors are placed near the transmit antenna(s) and are switched…

信息论 · 计算机科学 2021-01-07 Manish Mandloi , Devendra Singh Gurjar