Performance analysis of spatially distributed LTE-U/NR-U and Wi-Fi networks: An analytical model for coexistence study

2021 ◽  
pp. 103157
Author(s):  
Anand M. Baswade ◽  
Mohith Reddy ◽  
Antony Franklin A. ◽  
Bheemarjuna Reddy Tamma ◽  
Vanlin Sathya
Keyword(s):  
Performance Analysis ◽  
Analytical Model ◽  
Spatially Distributed

PERFORMANCE ANALYSIS OF FREQUENCY-HOPPED PACKET RADIO NETWORKS WITH SPATIALLY DISTRIBUTED USERS-COMBINED ERROR AND ERASURE DECODING CONSIDERED

2000 ◽  
Vol 10 (03n04) ◽  
pp. 159-171
Author(s):  
KHAIRI ASHOUR MOHAMED ◽  
LÁSZLÓ PAP
Keyword(s):  
Spatial Distribution ◽  
Performance Analysis ◽  
Generating Functions ◽  
Joint Probability ◽  
Radio Networks ◽  
Packet Radio Networks ◽  
Packet Radio ◽  
Novel Technique ◽  
Packet Capture ◽  
Spatially Distributed

This paper is concerned with the performance analysis of frequency-hopped packet radio networks with random spatial distribution of users. Depending on their relative energies, hits may either cause errors, erasures, or be ineffective. Combined error and erasure Reed Solomon decoding is used. Two types of hopping patterns are considered, namely random and one-coincidence patterns. Using a novel technique of the joint probability generating functions of the so called effective interference vectors, general closed form expressions for packet capture probabilities are derived. Numerical results indicate that, depending on the coding rate and traffic levels, larger values of the throughput can be achieved by using either error only or erasure only decoding.

Modeling and electromechanical performance analysis of frequency-variable piezoelectric stack transducers

2020 ◽  
Vol 31 (6) ◽  
pp. 897-910
Author(s):  
Jianjun Wang ◽  
Shuyuan Cai ◽  
Lei Qin ◽  
Donghuan Liu ◽  
Peijun Wei ◽  
...  
Keyword(s):  
Experimental Study ◽  
Performance Analysis ◽  
Analytical Solution ◽  
Resonance Frequency ◽  
Analytical Model ◽  
Dynamic Characteristics ◽  
Active Element ◽  
Underwater Sound ◽  
Layer Number ◽  
Electromechanical Performance

An exact analytical model of frequency-variable piezoelectric stack transducers is proposed, and their dynamic characteristics are studied in this article. Based on the linear piezoelasticity theory, the dynamic analytical solution is first derived, and then its correctness is validated by comparing it with the results of a special example in the previous literature and the ones of the experimental study. The effects of the tuning resistance and the layer number of the active element on the dynamic characteristics are discussed. Numerical results show that tuning the resistance and the layer number of the active element can enable the multi-frequency characteristics of the piezoelectric stack transducers. A proper layer number of the active element can minimize the short-circuited resonance frequency and the open-circuited anti-resonance frequency. These findings provide guidelines to design and optimize the piezoelectric stack transducers, which have promising potential in developing the multi-frequency Langevin transducers for some underwater sound and ultrasonic applications, such as ultrasonic cleaning, ultrasonic chemistry, and sonar radiators.

scholarly journals Performance analysis of spatially distributed MIMO systems

2017 ◽  
Vol 11 (4) ◽  
pp. 566-575 ◽  
Author(s):  
Farhana Bashar ◽  
Thushara D. Abhayapala
Keyword(s):  
Performance Analysis ◽  
Mimo Systems ◽  
Spatially Distributed

Performance Analysis of Container Unloading Operations at the Port of Suva Using a Simplified Analytical Model (SAM)

2008 ◽  
Vol 12 (4) ◽  
pp. 355-360 ◽  
Author(s):  
Shivendra Kumar ◽  
◽  
Ljubo Vlacic ◽  
Keyword(s):  
Performance Analysis ◽  
Prediction Model ◽  
Analytical Model ◽  
Performance Measures ◽  
Cooperative Control ◽  
Container Terminal ◽  
Simple Analytical Model ◽  
And Performance ◽  
Equipment Utilization ◽  
Significant Effort

Time has fast become one of the most important factors in global trading. While little can be done to reduce the travel time of ships, significant effort can be put into improving the efficiency of container terminal. This paper presents a simple analytical model (SAM) for predicting container dwell times and determining equipment utilization. The paper exemplifies the operations of the Port of Suva and presents an analysis of its operations. To improve the current performance, a cooperative control schema is proposed. It is shown in this paper that the prediction model and performance measures are a useful tool for container terminal planners.

scholarly journals An Analytical Model for the Performance Analysis of Concurrent Transmission in IEEE 802.15.4

Sensors ◽  
2014 ◽  
Vol 14 (3) ◽  
pp. 5622-5643 ◽  
Author(s):  
Cengiz Gezer ◽  
Alberto Zanella ◽  
Roberto Verdone
Keyword(s):  
Performance Analysis ◽  
Analytical Model ◽  
Ieee 802.15.4 ◽  
Concurrent Transmission

Performance Analysis and Optimization of a Dual Warhead System

2012 ◽  
Vol 13 (1) ◽  
Author(s):  
Xiao-Jun Guo ◽  
He-Ming Wen
Keyword(s):  
Experimental Data ◽  
Performance Analysis ◽  
Analytical Model ◽  
Present Model ◽  
Shaped Charge ◽  
Weapon Systems ◽  
Model Predictions ◽  
Modern Warfare ◽  
Good Agreement ◽  
Concrete Target

AbstractIn modern warfare earth penetrating weapons are often used to defeat enemy’s hardened and deeply buried targets such as aircraft shelters and bunkers. A dual warhead system (DWS) is one of such weapons composed of a forward shaped charge (FSC) and a following through warhead (FTW). In this paper, an analytical model is first proposed to analyze the penetration of an FTW into concrete targets with pre-drilled holes and a DWS is then optimized in order to achieve its best penetration performance. The effects of various parameters on the performance of a dual warhead system penetrating a concrete target are delineated. It transpires that the present model predictions are in good agreement with available experimental data and that the results obtained may be useful for designing such weapon systems.

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