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We study the impact of imperfect line-of-sight (LoS) phase tracking on the uplink performance of cell-free massive MIMO networks. Unlike prior works that assume perfectly known or completely unknown phases, we consider a realistic regime…

信息论 · 计算机科学 2026-02-27 Noor Ul Ain , Lorenzo Miretti , Renato L. G. Cavalcante , Slawomir Stanczak

Although the performance of the medium access control (MAC) of the IEEE 802.15.4 has been investigated under the assumption of ideal wireless channel, the understanding of the cross-layer dynamics between MAC and physical layer is an open…

网络与互联网体系结构 · 计算机科学 2013-07-25 Piergiuseppe Di Marco , Carlo Fischione , Fortunato Santucci , Karl Henrik Johansson

We propose a novel pilot-free multi-user uplink framework for integrated sensing and communication (ISAC) in mm-wave networks, where single-antenna users transmit orthogonal frequency division multiplexing signals without dedicated pilots.…

信号处理 · 电气工程与系统科学 2025-05-05 Sajad Daei , Gabor Fodor , Mikael Skoglund

We introduce a simple yet powerful and versatile analytical framework to approximate the SIR distribution in the downlink of cellular systems. It is based on the mean interference-to-signal ratio and yields the horizontal gap (SIR gain)…

信息论 · 计算机科学 2014-06-12 Martin Haenggi

In this paper, we study the downlink performance of a heterogeneous cellular network (HetNet) where both macro and small cells share the same spectrum and hence interfere with each other. We assume that the users are concentrated at certain…

信息论 · 计算机科学 2014-07-23 Ansuman Adhikary , Harpreet S. Dhillon , Giuseppe Caire

Given the proven benefits cell densification brings in terms of capacity and coverage, it is certain that 5G networks will be even more heterogeneous and dense. However, as smaller cells are introduced in the network, interference will…

网络与互联网体系结构 · 计算机科学 2017-08-11 Zana Limani Fazliu , Carla-Fabiana Chiasserini , Gian Michele Dell'Aera , Enver Hamiti

In this work, we consider the problem of multiuser scheduling for the downlink of cell-free massive multi-input multi-output networks with clustering. In particular, we develop a multiuser scheduling algorithm based on an enhanced greedy…

信息论 · 计算机科学 2023-06-06 S. Mashdour , R. C. de Lamare , J. P. Sales

Inter-cell interference (ICI) suppression is critical for multi-cell multi-user networks. In this paper, we investigate advanced precoding techniques for coordinated multi-point (CoMP) with downlink coherent joint transmission, an effective…

信号处理 · 电气工程与系统科学 2024-03-29 Xinyu Bian , Yuhao Liu , Yizhou Xu , Tianqi Hou , Wenjie Wang , Yuyi Mao , Jun Zhang

Influence Maximization(IM) aims to identify highly influential nodes to maximize influence spread in a network. Previous research on the IM problem has mainly concentrated on single-layer networks, disregarding the comprehension of the…

物理与社会 · 物理学 2023-11-16 Su-Su Zhang , Ming Xie , Chuang Liu , Xiu-Xiu Zhan

We examine the problem of optimizing resource allocation in the uplink for a user-centric, cell-free, multi-input multi-output network. We start by modeling and developing resource allocation algorithms for two standard network operation…

信息论 · 计算机科学 2024-06-11 Zehua Li , Raviraj Adve

A deep understanding of the queuing performance of wireless networks is essential for the advancement of future wireless communications. The stochastic nature of wireless channels in general gives rise to a time varying transmission rate.…

网络与互联网体系结构 · 计算机科学 2016-04-05 Sebastian Schiessl , Farshad Naghibi , Hussein Al-Zubaidy , Markus Fidler , James Gross

We consider a practical spatially correlated reconfigurable intelligent surface (RIS)-aided cell-free (CF) massive multiple-input-multiple-output (mMIMO) system with multi-antenna access points (APs) over spatially correlated Rician fading…

信息论 · 计算机科学 2022-09-29 Enyu Shi , Jiayi Zhang , Zhe Wang , Derrick Wing Kwan Ng , Bo Ai

We analyze the uplink radio frequency (RF) interference from a multiplicity of single-antenna user equipments transmitting to a cellular base station (BS) within the same time-frequency resource. The BS is assumed to operate with a lens…

信息论 · 计算机科学 2022-05-06 Harsh Tataria

This paper serves as a correction to the conference version. In this work, we explore uplink communication in cell-free (CF) massive multiple-input multiple-output (MaMIMO) systems, employing semi-blind transmission structures to mitigate…

信息论 · 计算机科学 2024-10-03 Zilu Zhao , Dirk Slock

Heterogeneous base stations (e.g. picocells, microcells, femtocells and distributed antennas) will become increasingly essential for cellular network capacity and coverage. Up until now, little basic research has been done on the…

信息论 · 计算机科学 2015-10-28 Ping Xia , Han-Shin Jo , Jeffrey G. Andrews

Experiments on online marketplaces and social networks suffer from interference, where the outcome of a unit is impacted by the treatment status of other units. We propose a framework for modeling interference using a ubiquitous deployment…

统计方法学 · 统计学 2023-08-21 Ariel Boyarsky , Hongseok Namkoong , Jean Pouget-Abadie

Multicell joint processing has been proven to be very efficient in overcoming the interference-limited nature of the cellular paradigm. However, for reasons of practical implementation global multicell joint decoding is not feasible and…

信息论 · 计算机科学 2011-11-22 Symeon Chatzinotas , Bjorn Ottersten

Downlink scheduling schemes are well-known and widely investigated under the assumption that the channel state is perfectly known to the scheduler. In the multiuser MIMO (broadcast) case, downlink scheduling in the presence of non-perfect…

信息论 · 计算机科学 2009-10-11 Hooman Shirani-Mehr , Giuseppe Caire , Michael J. Neely

The concepts of MIMO MC-CDMA are not new but the new technologies to improve their functioning are an emerging area of research. In general, most mobile communication systems transmit bits of information in the radio space to the receiver.…

网络与互联网体系结构 · 计算机科学 2011-12-12 K. Sureshkumar , R. Rajalakshmi , A. Vetrikanimozhi

This paper studies interference alignment (IA) based multi-cell cooperative resource allocation for the downlink OFDMA with universal frequency reuse. Unlike the traditional scheme that treats subcarriers as separate dimensions for resource…

信息论 · 计算机科学 2011-03-17 Bin Da , Rui Zhang
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