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Near-field (NF) communications is receiving renewed interest in the context of multiple-input multiple-output (MIMO) systems involving large physical apertures with respect to the signal wavelength. While line-of-sight (LOS) links are…

Signal Processing · Electrical Eng. & Systems 2025-11-26 Mohamadreza Delbari , George C. Alexandropoulos , Robert Schober , H. Vincent Poor , Vahid Jamali

We characterize the accuracy of analyzing the performance of a NOMA system where users are ranked according to their distances instead of instantaneous channel gains, i.e., product of distance-based path-loss and fading channel gains.…

Information Theory · Computer Science 2018-10-05 Mohammad Salehi , Hina Tabassum , Ekram Hossain

Unmanned aerial vehicles (UAVs) have recently found abundant applications in the public and civil domains. To ensure reliable control and navigation, connecting UAVs to controllers via existing cellular network infrastructure, i.e., ground…

Information Theory · Computer Science 2019-02-01 Xianghao Yu , Jun Zhang , Robert Schober , Khaled B. Letaief

The most promising approach to enhance network capacity for the next generation of wireless cellular networks (5G) is densification, which benefits from the extensive spatial reuse of the spectrum and the reduced distance between…

Information Theory · Computer Science 2016-11-17 Amir H. Jafari , David Lopez-Perez , Ming Ding , Jie Zhang

Statistical characterization of the signal-to-interference-plus-noise ratio (SINR) via its cumulative distribution function (CDF) is ubiquitous in a vast majority of technical contributions in the area of cellular networks since it boils…

Information Theory · Computer Science 2017-06-05 Imène Trigui , Sofiène Affes , Ben Liang

This paper compares centralized and distributed methods to solve the power minimization problem with quality-of-service (QoS) constraints in the downlink (DL) of multi-cell Massive multiple-input multiple-output (MIMO) systems. In…

Information Theory · Computer Science 2018-02-21 Trinh Van Chien , Emil Björnson , Erik G. Larsson , Tuan Anh Le

Focusing on the downlink, we consider a base station (BS) and the cell it covers. The Superposition Coding (SC), also referred to as Non Orthogonal Multiple Access (NOMA), is implemented. We propose an analytical model of the wireless cell…

Information Theory · Computer Science 2017-04-24 Jean-Marc Kelif , Jean-Marie Gorce , Azeddine Gati

We carry out a theoretical analysis of the uplink (UL) of a massive MIMO system with per-user channel correlation and Rician fading, using two processing approaches. Firstly, we examine the linear minimum-mean-square-error receiver under…

Information Theory · Computer Science 2018-09-07 Ikram Boukhedimi , Abla Kammoun , Mohamed-Slim Alouini

The increasing global push for carbon reduction highlights the importance of integrating renewable energy into the supply chain of cellular networks. However, due to the stochastic nature of renewable energy generation and the uneven load…

Signal Processing · Electrical Eng. & Systems 2026-01-21 Yuxi Zhao , Vicente Casares-Giner , Vicent Pla , Luis Guijarro , Iztok Humar , Yi Zhong , Xiaohu Ge

Millimeter Wave (mmWave) communication systems can provide high data rates, but the system performance may degrade significantly due to interruptions by mobile blockers such as humans or vehicles. A high frequency of interruptions and…

Signal Processing · Electrical Eng. & Systems 2019-07-03 Ish Kumar Jain , Rajeev Kumar , Shivendra Panwar

In this paper, the performance of uplink spectral efficiency in massive multiple input multiple output (MIMO) over spacially correlated Ricean fading channel is presented. The maximum ratio combining (MRC) receiver is employed at the base…

Information Theory · Computer Science 2017-07-20 Juan Cao , Dongming Wang , Jiamin Li , Qiang Sun

Considering both small-scale fading and long-term shadowing, we characterize the downlink rate distribution at a typical user equipment (UE) in a heterogeneous cellular network (HetNet), where shadowing, following any general distribution,…

Information Theory · Computer Science 2013-06-27 Harpreet S. Dhillon , Jeffrey G. Andrews

A great deal of efforts have been made on the performance evaluation of distributed antenna systems (DASs). Most of them assume a regular base-station (BS) antenna layout where the number of BS antennas is usually small. With the growing…

Information Theory · Computer Science 2013-12-03 Junyuan Wang , Lin Dai

This paper is focused on multiuser load modulation arrays (MU-LMAs) which are attractive due to their low system complexity and reduced cost for millimeter wave (mmWave) multi-input multi-output (MIMO) systems. The existing precoding…

Signal Processing · Electrical Eng. & Systems 2023-11-09 Ercong Yu , Jinle Zhu , Qiang Li , Zilong Liu , Hongyang Chen , Shlomo Shamai , H. Vincent Poor

Massive Multiple-input Multiple-output (MIMO) systems offer exciting opportunities due to their high spectral efficiencies capabilities. On the other hand, one major issue in these scenarios is the high-complexity detectors of such systems.…

Information Theory · Computer Science 2015-01-27 A. Amorim Pereira , R. Sampaio-Neto

We consider the uplink of a multicell multiuser multiple-input multiple-output system where the channel experiences both small and large-scale fading. The data detection is done by using the linear zero-forcing technique, assuming the base…

Information Theory · Computer Science 2012-07-02 Hien Quoc Ngo , Michail Matthaiou , Trung Q. Duong , Erik G. Larsson

We consider a multi-cell Massive MIMO system in a line-of-sight (LoS) propagation environment, for which each user is served by one base station, with no cooperation among the base stations. Each base station knows the channel between its…

Signal Processing · Electrical Eng. & Systems 2018-08-14 Hong Yang , Hien Quoc Ngo , Erik G. Larsson

This paper investigates the downlink of massive multiple-input multiple-output (MIMO) systems that include a single cell Base Station (BS) equipped with large number of antennas serving multiple users. As the number of RF chains is getting…

Information Theory · Computer Science 2019-07-18 Rami Hamdi , Wessam Ajib

The fundamental limits of single-anchor multi-antenna positioning are investigated. Exploiting the structure of the multiple input-multiple output-orthogonal frequency division multiplexing (MIMO-OFDM) channel at millimeter-wave…

Information Theory · Computer Science 2020-12-04 Anastasios Kakkavas , Mario H. Castañeda García , Richard A. Strirling-Gallacher , Josef A. Nossek

Statistical models are employed to characterize the clutter in the radar and the reflective signals of the telecommunication receivers. End to this, Rayliegh distribution is the simplest fading models in NLOS channels possessing…

Signal Processing · Electrical Eng. & Systems 2019-01-23 Zabihollah Hasanshahi , Paeiz Azmi , Mohammad Khajezadeh