Coverage probability
View article: Efficient Deployment of Multiple Unmanned Aerial Vehicles for Optimal Wireless Coverage
Efficient Deployment of Multiple Unmanned Aerial Vehicles for Optimal Wireless Coverage Open
In this paper, the efficient deployment of multiple unmanned aerial vehicles\n(UAVs) with directional antennas acting as wireless base stations that provide\ncoverage for ground users is analyzed. First, the downlink coverage probability\n…
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Minimum sample size for external validation of a clinical prediction model with a binary outcome Open
In prediction model research, external validation is needed to examine an existing model's performance using data independent to that for model development. Current external validation studies often suffer from small sample sizes and conse…
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Random effects meta‐analysis: Coverage performance of 95<i>%</i> confidence and prediction intervals following REML estimation Open
A random effects meta‐analysis combines the results of several independent studies to summarise the evidence about a particular measure of interest, such as a treatment effect. The approach allows for unexplained between‐study heterogeneit…
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A Primer on Cellular Network Analysis Using Stochastic Geometry Open
This tutorial is intended as an accessible but rigorous first reference for someone interested in learning how to model and analyze cellular network performance using stochastic geometry. In particular, we focus on computing the signal-to-…
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Performance Analysis of UAV Enabled Disaster Recovery Networks: A Stochastic Geometric Framework Based on Cluster Processes Open
In this paper, we develop a comprehensive statistical framework to characterize and model large-scale unmanned aerial vehicle-enabled post-disaster recovery cellular networks. In the case of natural or man-made disasters, the cellular netw…
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RIS-Assisted Coverage Enhancement in Millimeter-Wave Cellular Networks Open
The use of millimeter-wave (mmWave) bandwidth is one key enabler to achieve the high data rates in the fifth-generation (5G) cellular systems. However, mmWave signals suffer from significant path loss due to high directivity and sensitivit…
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Modeling and Analyzing the Coexistence of Wi-Fi and LTE in Unlicensed Spectrum Open
We leverage stochastic geometry to characterize key performance metrics for neighboring Wi-Fi and LTE networks in unlicensed spectrum. Our analysis focuses on a single unlicensed frequency band, where the locations for the Wi-Fi access poi…
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Likelihood-based random-effects meta-analysis with few studies: empirical and simulation studies Open
In the presence of between-study heterogeneity, especially with unbalanced study sizes, caution is needed in applying meta-analytical methods to few studies, as either coverage probabilities might be compromised, or intervals are inconclus…
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Performance Analysis of Cell-Free Massive MIMO Systems: A Stochastic Geometry Approach Open
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Coverage in mmWave Cellular Networks With Base Station Co-Operation Open
Signal outage, due to shadowing and blockage, is expected to be the main bottleneck in millimeter wave (mmWave) networks. Moreover, the anticipated dense deployment of base stations in mmWave networks is expected to increase the interferen…
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Caching Policy Toward Maximal Success Probability and Area Spectral Efficiency of Cache-Enabled HetNets Open
In this paper, we investigate the optimal caching policy respectively\nmaximizing the success probability and area spectral efficiency (ASE) in a\ncache-enabled heterogeneous network (HetNet) where a tier of multi-antenna\nmacro base stati…
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Random Forest Prediction Intervals Open
Random forests are among the most popular machine learning techniques for prediction problems. When using random forests to predict a quantitative response, an important but often overlooked challenge is the determination of prediction int…
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Improving the Coverage and Spectral Efficiency of Millimeter-Wave Cellular Networks Using Device-to-Device Relays Open
The susceptibility of millimeter waveform propagation to blockages limits the coverage of millimeter-wave (mmWave) signals. To overcome blockages, we propose to leverage two-hop device-to-device (D2D) relaying. Using stochastic geometry, w…
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A Unified Spatial Framework for UAV-Aided MmWave Networks Open
For unmanned aerial vehicle (UAV) aided millimeter wave (mmWave) networks, we propose a unified three-dimensional (3D) spatial framework in this paper to model a general case that uncovered users send messages to base stations via UAVs. Mo…
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Optimal bandwidth choice for robust bias-corrected inference in regression discontinuity designs Open
Summary Modern empirical work in regression discontinuity (RD) designs often employs local polynomial estimation and inference with a mean square error (MSE) optimal bandwidth choice. This bandwidth yields an MSE-optimal RD treatment effec…
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Model-assisted inference for treatment effects using regularized calibrated estimation with high-dimensional data Open
Consider the problem of estimating average treatment effects when a large number of covariates are used to adjust for possible confounding through outcome regression and propensity score models. We develop new methods and theory to obtain …
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Coverage Analysis for Millimeter Wave Cellular Networks With Imperfect Beam Alignment Open
Millimeter wave (mmWave) communications is a promising approach to satisfy the increasing high data rate requirement of next generation mobile communications. This paper studies the downlink coverage performance of mmWave cellular networks…
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Line-of-Sight Probability for mmWave-Based UAV Communications in 3D Urban Grid Deployments Open
The network operators will soon be accommodating a new type of users: unmanned aerial vehicles (UAVs). 5G New Radio (NR) technology operating in the millimeter-wave (mmWave) frequency bands can support the emerging bandwidth-hungry applica…
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STAR-RIS Aided NOMA in Multicell Networks: A General Analytical Framework With Gamma Distributed Channel Modeling Open
The simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) is capable of providing full-space coverage of smart radio environments. This work investigates STAR-RIS aided downlink non-orthogonal multiple ac…
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Impact of Device Orientation on Error Performance of LiFi Systems Open
Most studies on optical wireless communications (OWC) have neglected the effect of random orientation in their performance analysis due to the lack of a proper model for the random orientation. Our recent empirical-based research illustrat…
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Indirect Effects in Sequential Mediation Models: Evaluating Methods for Hypothesis Testing and Confidence Interval Formation Open
Complex mediation models, such as a two-mediator sequential model, have become more prevalent in the literature. To test an indirect effect in a two-mediator model, we conducted a large-scale Monte Carlo simulation study of the Type I erro…
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The accuracy of effect-size estimates under normals and contaminated normals in meta-analysis Open
This article evaluates the accuracy of effect-size estimates for some estimation procedures in meta-analysis. The dilemma of which effect-size estimate is suitable is still a problem in meta-analysis. Monte Carlo simulations were used to g…
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Validation of uncertainty predictions in digital soil mapping Open
It is quite common in digital soil mapping (DSM) to quantify the uncertainty of issued predictions, that is to make probabilistic predictions. Yet, little attention has been paid to its validation. Probabilistic predictions are only of val…
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Probability Interval Prediction of Wind Power Based on KDE Method With Rough Sets and Weighted Markov Chain Open
Research on the uncertainty of wind power has a significant influence on power system planning and decision-making. This paper proposes a novel method for wind power interval forecasting based on rough sets theory, weighted Markov chain, a…
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Modeling and Analysis of MmWave V2X Networks With Vehicular Platoon Systems Open
Due to the low traffic congestion, high fuel efficiency, and comfortable travel experience, vehicular platoon systems (VPSs) become one of the most promising applications in millimeter wave (mmWave) vehicular networks. In this paper, an ef…
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Coverage analysis for 3D terahertz communication systems Open
We conduct novel coverage probability analysis of downlink transmission in a three-dimensional (3D) terahertz (THz) communication (THzCom) system. In this system, we address the unique propagation properties in THz band, e.g., absorption l…
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Simultaneous Fiducial Generalized Confidence Intervals for Ratios of Means of Lognormal Distributions Open
In this paper, we construct Fiducial Generalized Confidence Intervals (FGCI) for ratio of means of two lognormal distributions based on independent observations from the two distributions. We compared the proposed method with another metho…
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Clustered UAV Networks With Millimeter Wave Communications: A Stochastic Geometry View Open
In order to satisfy the requirement of high throughput in most UAV applications, the potential of integrating millimeter wave (mmWave) communications with UAV networks is explored in this paper. A tractable three-dimensional (3D) spatial m…
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Doubly robust uniform confidence band for the conditional average treatment effect function Open
Summary In this paper, we propose a doubly robust method to estimate the heterogeneity of the average treatment effect with respect to observed covariates of interest. We consider a situation where a large number of covariates are needed f…
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Methods for estimating between‐study variance and overall effect in meta‐analysis of odds ratios Open
In random‐effects meta‐analysis the between‐study variance ( τ 2 ) has a key role in assessing heterogeneity of study‐level estimates and combining them to estimate an overall effect. For odds ratios the most common methods suffer from bia…