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This paper focuses on boosting the performance of small cell networks (SCNs) by integrating multiple-input multiple-output (MIMO) and non-orthogonal multiple access (NOMA) in consideration of imperfect channel-state information (CSI). The…

Information Theory · Computer Science 2022-09-26 Zheng Shi , Hong Wang , Yaru Fu , Guanghua Yang , Shaodan Ma , Xinrong Ye

We use stochastic geometry to analyze the performance of a partial decode-and-forward (PDF) relaying scheme applied in a user-assisted relaying setting, where an active user relays data through another idle user in uplink cellular…

Information Theory · Computer Science 2015-07-07 Hussain Elkotby , Mai Vu

In this paper, we investigate spectrum-power trading between a small cell (SC) and a macro cell (MC), where the SC consumes power to serve the macro cell users (MUs) in exchange for some bandwidth from the MC. Our goal is to maximize the…

Information Theory · Computer Science 2017-04-12 Qingqing Wu , Geoffrey Ye Li , Wen Chen , Derrick Wing Kwan Ng

The transmitter optimization (i.e., steering vectors and power allocation) for a MISO Broadcast Channel (MISO-BC) subject to general linear constraints is considered. Such constraints include, as special cases, the sum power, the…

Information Theory · Computer Science 2015-05-14 Hoon Huh , Haralabos C. Papadopoulos , Giuseppe Caire

This paper presents the meta distribution analysis of the downlink two-user non-orthogonal multiple access (NOMA) in cellular networks. We propose a novel user ranking technique wherein the users from the cell center (CC) and cell edge (CE)…

Signal Processing · Electrical Eng. & Systems 2019-08-06 Praful D. Mankar , Harpreet S. Dhillon

We consider a massive MU-MIMO downlink time-division duplex system where a base station (BS) equipped with many antennas serves several single-antenna users in the same time-frequency resource. We assume that the BS uses linear precoding…

Information Theory · Computer Science 2013-10-08 Hien Quoc Ngo , Erik G. Larsson , Thomas L. Marzetta

Wireless cellular networks have many parameters that are normally tuned upon deployment and re-tuned as the network changes. Many operational parameters affect reference signal received power (RSRP), reference signal received quality…

In this paper, we employ a user-centric (UC) cell-free massive MIMO (CFmMIMO) network for providing ultra reliable low latency communication (URLLC) when traditional ground users (GUs) coexist with unmanned aerial vehicles (UAVs). We study…

Information Theory · Computer Science 2022-12-06 Mohamed Elwekeil , Alessio Zappone , Stefano Buzzi

In this paper we consider a time-division duplex cell-free massive multiple-input multiple-output (MIMO) system where many distributed access points (APs) simultaneously serve many users. A normalized conjugate beamforming scheme, which…

Information Theory · Computer Science 2019-09-10 Giovanni Interdonato , Hien Quoc Ngo , Erik G. Larsson , Pål Frenger

In this paper, a new mathematical framework to the analysis of millimeter wave cellular networks is introduced. Its peculiarity lies in considering realistic path-loss and blockage models, which are derived from experimental data recently…

Information Theory · Computer Science 2016-11-17 Marco Di Renzo

We consider a multi-user (MU) multiple-input-single-output (MISO) downlink system with M single-antenna users and N transmit antennas with a nonlinear power amplifier (PA) at each antenna. Instead of emitting constant envelope (CE) signals…

Information Theory · Computer Science 2017-02-07 Hela Jedda , Amine Mezghani , A. Lee Swindlehurst , Josef A. Nossek

Cellular networks are becoming increasingly heterogeneous with higher base station (BS) densities and ever more frequency bands, making BS selection and band assignment key decisions in terms of rate and coverage. In this paper, we…

Systems and Control · Electrical Eng. & Systems 2023-01-24 Manan Gupta , Sandeep Chinchali , Paul Varkey , Jeffrey G. Andrews

Designing an efficient scheme in physical layer enables cognitive radio (CR) users to efficiently utilize resources dedicated to primary users (PUs). In this paper in order to maximize the SU's throughput, the SU's transceivers beamforming…

Information Theory · Computer Science 2012-06-26 Adnan Gavili , Masoumeh Nasiri Kenari

Powering radio access networks using renewables, such as wind and solar power, promises dramatic reduction in the network operation cost and the network carbon footprints. However, the spatial variation of the energy field can lead to…

Information Theory · Computer Science 2016-11-18 Kaibin Huang , Marios Kountouris , Victor O. K. Li

Small cells deployment is one of the most significant long-term strategic policies of the mobile network operators. In heterogeneous networks (HetNets), small cells serve as offloading spots in the radio access network to offload macro…

Networking and Internet Architecture · Computer Science 2017-01-05 Mirza Golam Kibria , Gabriel Porto Villardi , Wei-Shun Liao , Kien Nguyen , Kentaro Ishizu , Fumihide Kojima

Full-duplex (FD) communication is an emerging technology that can potentially double the throughput of cellular networks. Preliminary studies in single-cell or small FD network deployments have revealed promising rate gains using…

Information Theory · Computer Science 2016-04-21 Italo Atzeni , Marios Kountouris , George C. Alexandropoulos

In this paper, we analyze the sum rate performance of multi-user multiple-input multiple-output (MU-MIMO) systems, with a finite constellation phase-shift keying (PSK) input alphabet. We analytically calculate and compare the achievable sum…

Signal Processing · Electrical Eng. & Systems 2018-12-07 Abdelhamid Salem , Christos Masouros , Kai-Kit Wong

We consider the downlink scenario of multiuser multiple-input-single-output (MU-MISO) communication systems with constant envelope (CE) signals emitted from each antenna. This results in energy efficient power amplifiers (PAs). We propose a…

Information Theory · Computer Science 2017-06-28 Andreas Noll , Hela Jedda , Josef A. Nossek

Network densification is a promising cellular deployment technique that leverages spatial reuse to enhance coverage and throughput. Recent work has identified that at some point ultra-densification will no longer be able to deliver…

Information Theory · Computer Science 2017-04-06 Van Minh Nguyen , Marios Kountouris

Large-scale blockages like buildings affect the performance of urban cellular networks, especially at higher frequencies. Unfortunately, such blockage effects are either neglected or characterized by oversimplified models in the analysis of…

Information Theory · Computer Science 2013-09-18 Tianyang Bai , Rahul Vaze , Robert W. Heath