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Imagine a coverage area where each mobile device is communicating with a preferred set of wireless access points (among many) that are selected based on its needs and cooperate to jointly serve it, instead of creating autonomous cells. This…

信息论 · 计算机科学 2023-11-29 Özlem Tuğfe Demir , Emil Björnson , Luca Sanguinetti

Massive MIMO brings both motivations and challenges to develop the 5th generation Mobile wireless technology. The promising number of users and the high bitrate offered per unit area are challenged by uplink pilot contamination due to pilot…

网络与互联网体系结构 · 计算机科学 2016-05-04 Ahmad Abboud , Jean-Pierre Cances , Ali H. Jaber , Vahid Meghdadi

Mobile edge caching (MEC) has been introduced to support ever-growing end-users' needs. To reduce the backhaul traffic demand and content delivery latency, cache-enabled edge servers at base stations (BSs) are employed to provision popular…

信号处理 · 电气工程与系统科学 2021-01-01 Susanna Mosleh , Qiang Fan , Lingjia Liu , Jonathan D. Ashdown , Erik Perrins , Kurt Turck

This paper presents a tutorial for network multiple-input and multiple-output (netMIMO) in wireless local area networks (WLAN). Wireless traffic demand is growing exponentially. NetMIMO allows access points (APs) in a WLAN to cooperate in…

网络与互联网体系结构 · 计算机科学 2014-05-06 Hong Huang , Hajar Barani , Hussein Al-Azzawi

Mission-critical communications (MCC) involve all communications between people in charge of the safety of the civil society. MCC have unique requirements that include improved reliability, security and group communication support. In this…

信息论 · 计算机科学 2020-12-11 Deepa Jagyasi , Marceau Coupechoux

IEEE 802.11be (Wi-Fi 7) introduces a new concept called multi-link operation (MLO), which allows multiple Wi-Fi interfaces in different bands (2.4, 5, and 6 GHz) to work together to increase network throughput, reduce latency, and improve…

网络与互联网体系结构 · 计算机科学 2024-04-09 Lyutianyang Zhang , Hao Yin , Sumit Roy , Liu Cao , Xiangyu Gao , Vanlin Sathya

Low-resolution analog-to-digital converters (ADCs) are promising for reducing energy consumption and costs of multiuser multiple-input multiple-output (MIMO) systems with many antennas. We propose low-resolution multiuser MIMO receivers…

信号处理 · 电气工程与系统科学 2022-11-21 Ana Beatriz L. B. Fernandes , Zhichao Shao , Lukas T. N. Landau , Rodrigo C. de Lamare

This paper investigates joint user pairing, power and time slot duration allocation in the uplink multiple-input single-output (MISO) multi-user cooperative rate-splitting multiple access (C-RSMA) networks in half-duplex (HD) mode. We…

信号处理 · 电气工程与系统科学 2024-09-05 Shreya Khisa , Mohamad Elhattab , Chadi Assi , Sanaa Sharafeddine

Caching is an effective technique to improve user perceived experience for content delivery in wireless networks. Wireless caching differs from traditional web caching in that it can exploit the broadcast nature of wireless medium and hence…

信息论 · 计算机科学 2017-05-16 Youlong Cao , Meixia Tao , Fan Xu , Kangqi Liu

Large antenna arrays will be needed in future millimeter wave (mmWave) cellular networks, enabling a large number of different possible antenna architectures and multiple-input multiple-output (MIMO) techniques. It is still unclear which…

信息论 · 计算机科学 2016-11-15 Mandar N. Kulkarni , Amitava Ghosh , Jeffrey G. Andrews

In this paper, we consider {\em media-based modulation (MBM)}, an attractive modulation scheme which is getting increased research attention recently, for the uplink of a massive MIMO system. Each user is equipped with one transmit antenna…

信息论 · 计算机科学 2016-11-02 Bharath Shamasundar , A. Chockalingam

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

The multiple access channel (MAC) with many-user is a general model for massive machine type communications. In this paradigm, the number of users may be comparable or even larger than the coding blocklength $n$. In contrast, classical MAC…

信息论 · 计算机科学 2019-08-12 Fan Wei , Yongpeng Wu , Wen Chen , Yanlin Geng , Giuseppe Caire

The existing medium access control (MAC) protocol of Wi-Fi networks (i.e., carrier-sense multiple access with collision avoidance (CSMA/CA)) suffers from poor performance in dense deployments due to the increasing number of collisions and…

信息论 · 计算机科学 2021-11-18 Jiantao Xin , Wensen Xu , Yucheng Cai , Taotao Wang , Shengli Zhang , Peng Liu , Ziyang Guo , Jiajun Luo

We investigate and solve the rate balancing problem in the downlink for a multiuser Multiple-Input-Multiple-Output (MIMO) system. In particular, we adopt a transceiver structure to maximize the worst-case rate of the user while satisfying a…

信号处理 · 电气工程与系统科学 2019-06-14 Imene Ghamnia , Dirk Slock , Yi Yuan-Wu

This work proposes a joint power control and access points (APs) scheduling algorithm for uplink cell-free massive multiple-input multiple-output (CF-mMIMO) networks without channel hardening assumption. Extensive studies have done on the…

信号处理 · 电气工程与系统科学 2024-10-28 Hyeonsik Yeom , Junguk Park , Jinho Choi , Jeongseok Ha

Cell-free massive MIMO systems have promising data rate and uniform coverage gains. These systems, however, typically rely on optical fiber based fronthaul for the communication between the central processing unit (CPU) and the distributed…

信息论 · 计算机科学 2022-08-09 Umut Demirhan , Ahmed Alkhateeb

In this work, we study the cross-layer timely throughput maximization for extended reality (XR) applications through uplink multi-user MIMO (MU-MIMO) scheduling. Timely scheduling opportunities are characterized by the peak age of…

Cooperative transmission is an emerging communication technique that takes advantage of the broadcast nature of wireless channels. However, due to low spectral efficiency and the requirement of orthogonal channels, its potential for use in…

信息论 · 计算机科学 2016-11-17 Zhu Han , Xin Zhang , H. Vincent Poor

We address the problem of the bit error rate (BER) performance gap between the sub-optimal and optimal linear precoder (LP) for a multiuser (MU) multiple input and multiple output (MIMO) broadcast systems in this paper. Particularly, mobile…

信息论 · 计算机科学 2016-12-08 Md. Abdul Latif Sarker