The 5G physical layer has evolved rapidly. With transmissions at 28, 38, and 72 GHz, millimeter (MM) wave communications are at the core of it. Such links provide improved data rates to an increased number of users availing around 20 GHz of free spectrum. Directional arrays in multiple-input multiple-output (MIMO) setups facilitate beamsteered transmissions. Maximal ratio combining (MRC) receivers aid MM wave signaling and link metrics are analyzed in terms of antenna correlations. The system model is evaluated assuming a short range, non-line-of-sight (NLOS) MM wave user under independently correlated, Rayleigh conditions. This paper showcases analytical closed form expressions for received signal, output signal- to-noise ratio (SNR), line-of-sight (LOS), probability density function (PDF), and NLOS average capacity of the proposed MM wave link. The derivations exhibit capacity alterations with transceiver correlations. MM wave correlation matrices have unique dependency on steering vectors or corresponding transmission angles. This does not apply to millimeter wave.
{"title":"Minimally Equicorrelated MIMO Modelling for NLOS MM Wave Performance Improvement","authors":"Sabyasachi Bhattacharyya, G. Aruna","doi":"10.4018/ijitn.309695","DOIUrl":"https://doi.org/10.4018/ijitn.309695","url":null,"abstract":"The 5G physical layer has evolved rapidly. With transmissions at 28, 38, and 72 GHz, millimeter (MM) wave communications are at the core of it. Such links provide improved data rates to an increased number of users availing around 20 GHz of free spectrum. Directional arrays in multiple-input multiple-output (MIMO) setups facilitate beamsteered transmissions. Maximal ratio combining (MRC) receivers aid MM wave signaling and link metrics are analyzed in terms of antenna correlations. The system model is evaluated assuming a short range, non-line-of-sight (NLOS) MM wave user under independently correlated, Rayleigh conditions. This paper showcases analytical closed form expressions for received signal, output signal- to-noise ratio (SNR), line-of-sight (LOS), probability density function (PDF), and NLOS average capacity of the proposed MM wave link. The derivations exhibit capacity alterations with transceiver correlations. MM wave correlation matrices have unique dependency on steering vectors or corresponding transmission angles. This does not apply to millimeter wave.","PeriodicalId":42285,"journal":{"name":"International Journal of Interdisciplinary Telecommunications and Networking","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47652853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This paper argues that the process adopted to design 5G was not fully successful, with few of the design goals being met, and with more limited deployment and lower consumer enthusiasm than previous generations. This was because of undue influence from manufacturers and politicians and insufficient input from mobile operators and users. Hence, it is appropriate to question whether a different approach should be adopted to deliver 6G. The question is timely; within a year or two the approach towards 6G and its key targets will become increasingly hard to change.
{"title":"Designing a 6G System That Users Want","authors":"W. Webb","doi":"10.4018/ijitn.309702","DOIUrl":"https://doi.org/10.4018/ijitn.309702","url":null,"abstract":"This paper argues that the process adopted to design 5G was not fully successful, with few of the design goals being met, and with more limited deployment and lower consumer enthusiasm than previous generations. This was because of undue influence from manufacturers and politicians and insufficient input from mobile operators and users. Hence, it is appropriate to question whether a different approach should be adopted to deliver 6G. The question is timely; within a year or two the approach towards 6G and its key targets will become increasingly hard to change.","PeriodicalId":42285,"journal":{"name":"International Journal of Interdisciplinary Telecommunications and Networking","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49520136","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This paper proposes an algorithm to change the concept of rendezvous points (RPs), which have been commonly used in mobile sink routing problem of wireless sensor networks (WSNs) to rendezvous areas (RAs) and to generate RAs by using geographic information system (GIS) tools. With the traditional RPs, a mobile sink must have visited the points, and possible deviations from the points would cause the mobile sink difficulty finding exact locations to collect data. However, with suggested RAs, the mobile sink is capable of receiving data from sensor nodes in an RA by visiting any points within the RA. It also reduces the traveling distance of the mobile sink, thereby prolonging its lifetime. With appropriate extensions with GIS tools, the algorithm can generate 3D RAs, which can be simulated in more realistic environments.
{"title":"Introduction of a Method Using GIS to Generate Rendezvous Areas for Mobile Sinks in WSNs","authors":"Adrien Chardon Fabian, Min Kyung An","doi":"10.4018/ijitn.309705","DOIUrl":"https://doi.org/10.4018/ijitn.309705","url":null,"abstract":"This paper proposes an algorithm to change the concept of rendezvous points (RPs), which have been commonly used in mobile sink routing problem of wireless sensor networks (WSNs) to rendezvous areas (RAs) and to generate RAs by using geographic information system (GIS) tools. With the traditional RPs, a mobile sink must have visited the points, and possible deviations from the points would cause the mobile sink difficulty finding exact locations to collect data. However, with suggested RAs, the mobile sink is capable of receiving data from sensor nodes in an RA by visiting any points within the RA. It also reduces the traveling distance of the mobile sink, thereby prolonging its lifetime. With appropriate extensions with GIS tools, the algorithm can generate 3D RAs, which can be simulated in more realistic environments.","PeriodicalId":42285,"journal":{"name":"International Journal of Interdisciplinary Telecommunications and Networking","volume":"1 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70460091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-30DOI: 10.21608/ijt.2021.266289
Ahmed H. Eltengy, H. Zied
: In recent years, there has been a significant increase in the use of location-based solutions. As a result, data encryption has become increasingly important in order to ensure privacy and confidentiality, especially in all domains, military and civil alike. This paper presents an application that will be used in both military and civilian situations, encrypting data on the location and movements of military personnel or civilian prospec-tors within a specific area using transmitting and receiving circuits controlled by a micro-controller programmed with the proposed encryption algorithm. The application will be used in both military and civilian settings. Depending on the task at hand or the nature of the immediate surroundings, the proposed application has been introduced, installed, and used in a variety of ways. The proposed technology has been tested in a variety of situa-tions and has produced excellent results in all of them. The suggested application is confi-dential, authenticated, and simple to use, according to the results of frequency, speed, and security testing; this has been demonstrated by the results of these tests.
{"title":"Using CryptoBin Encryption Algorithm in Military Applications","authors":"Ahmed H. Eltengy, H. Zied","doi":"10.21608/ijt.2021.266289","DOIUrl":"https://doi.org/10.21608/ijt.2021.266289","url":null,"abstract":": In recent years, there has been a significant increase in the use of location-based solutions. As a result, data encryption has become increasingly important in order to ensure privacy and confidentiality, especially in all domains, military and civil alike. This paper presents an application that will be used in both military and civilian situations, encrypting data on the location and movements of military personnel or civilian prospec-tors within a specific area using transmitting and receiving circuits controlled by a micro-controller programmed with the proposed encryption algorithm. The application will be used in both military and civilian settings. Depending on the task at hand or the nature of the immediate surroundings, the proposed application has been introduced, installed, and used in a variety of ways. The proposed technology has been tested in a variety of situa-tions and has produced excellent results in all of them. The suggested application is confi-dential, authenticated, and simple to use, according to the results of frequency, speed, and security testing; this has been demonstrated by the results of these tests.","PeriodicalId":42285,"journal":{"name":"International Journal of Interdisciplinary Telecommunications and Networking","volume":"22 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76977004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-29DOI: 10.21608/ijt.2021.266225
E. Hagras, A. Zein El-Din
: In this paper, a new cascaded multi modular chaotic logistic map (CMM-CLM) is proposed. The bifurcation diagram for the proposed CMM-CLM is very complex and it has strong chaos properties. The strong chaos leads to a very high Lyapunov exponent values. Based on the proposed CMM-CLM, a new robust physical layer security for the interleaved NOMA based on the multilayers concept (ML-I-NOMA) with the iterative de-coder has been introduced. The analysis of the proposed ML-I-NOMA cryptosystem is studied in the both encrypted and non-encrypted image transmission. The main contribu-tion of this paper is to prove that, the different layer effect has a slight performance change compared with the bandwidth consumption. Finally, the simulation results clarified that, the proposed MLI-NOMA achieves 50% and 75% bandwidth efficiency at 2 and 4 layers with an excellent visual quality metric in the correct detection. In addition, the security analysis reveals that, the proposed ML-I-NOMA cryptosystem has large key space and good key sensitivity, and its entropy approaches to the idea value. Hence, the proposed ML-I-NOMA cryptosystem based on the CMM-CLM can strongly resist traditional cipher attacks.
{"title":"Physical Layer Security Based on Cascaded Multi-Modular Chaotic Logistic Map for ML-I-NOMA Image Transmission","authors":"E. Hagras, A. Zein El-Din","doi":"10.21608/ijt.2021.266225","DOIUrl":"https://doi.org/10.21608/ijt.2021.266225","url":null,"abstract":": In this paper, a new cascaded multi modular chaotic logistic map (CMM-CLM) is proposed. The bifurcation diagram for the proposed CMM-CLM is very complex and it has strong chaos properties. The strong chaos leads to a very high Lyapunov exponent values. Based on the proposed CMM-CLM, a new robust physical layer security for the interleaved NOMA based on the multilayers concept (ML-I-NOMA) with the iterative de-coder has been introduced. The analysis of the proposed ML-I-NOMA cryptosystem is studied in the both encrypted and non-encrypted image transmission. The main contribu-tion of this paper is to prove that, the different layer effect has a slight performance change compared with the bandwidth consumption. Finally, the simulation results clarified that, the proposed MLI-NOMA achieves 50% and 75% bandwidth efficiency at 2 and 4 layers with an excellent visual quality metric in the correct detection. In addition, the security analysis reveals that, the proposed ML-I-NOMA cryptosystem has large key space and good key sensitivity, and its entropy approaches to the idea value. Hence, the proposed ML-I-NOMA cryptosystem based on the CMM-CLM can strongly resist traditional cipher attacks.","PeriodicalId":42285,"journal":{"name":"International Journal of Interdisciplinary Telecommunications and Networking","volume":"1 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78276132","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-26DOI: 10.21608/ijt.2021.266282
H. Fiyad, Wael A. Mokhtar, Ehab Ali
: This paper presents a novel current control technique to control a separately excited DC motor in order to emulate the Wind Energy Conversion System (WECS) experimentally. This system is utilized to simulate the dynamic behaviors of WECS accu-rately in extension to a wide range of operating conditions. The suggested system is carried out in the laboratory using a set of separately excited DC motor, permeant magnet synchronous generator, Half-controlled rectifier bridge, firing circuit of the DC motor half-controlled rectifier bridge, current sensor, voltage sensor, speed sensor and a controller. Nonlinear model of WECS is derived and studied in addition to the operation of WECS at maximum mechanical power. DC motor current, voltage and speed are sensed using a set of predesigned sensors in order to feedback the system and record results. Experimental test results of the suggested wind energy conversion system are listed in static and dynamic cases to investigate the effectiveness for applying the suggested control technique to the developed system.
{"title":"DC Motor Emulation of Wind Energy Conversion System","authors":"H. Fiyad, Wael A. Mokhtar, Ehab Ali","doi":"10.21608/ijt.2021.266282","DOIUrl":"https://doi.org/10.21608/ijt.2021.266282","url":null,"abstract":": This paper presents a novel current control technique to control a separately excited DC motor in order to emulate the Wind Energy Conversion System (WECS) experimentally. This system is utilized to simulate the dynamic behaviors of WECS accu-rately in extension to a wide range of operating conditions. The suggested system is carried out in the laboratory using a set of separately excited DC motor, permeant magnet synchronous generator, Half-controlled rectifier bridge, firing circuit of the DC motor half-controlled rectifier bridge, current sensor, voltage sensor, speed sensor and a controller. Nonlinear model of WECS is derived and studied in addition to the operation of WECS at maximum mechanical power. DC motor current, voltage and speed are sensed using a set of predesigned sensors in order to feedback the system and record results. Experimental test results of the suggested wind energy conversion system are listed in static and dynamic cases to investigate the effectiveness for applying the suggested control technique to the developed system.","PeriodicalId":42285,"journal":{"name":"International Journal of Interdisciplinary Telecommunications and Networking","volume":"3 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87926337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-22DOI: 10.21608/ijt.2021.266277
A. Miligy, Asem Hussein, Hassn Nadir, M. Rizk
: This paper introduces an investigation and implementation of integrated SIW system using Rogger RT/duriod 5880 substrate of ε r = 2.2 , tan δ = 0.0009 and thickness 0.79 mmsimulated using HFSS. The proposed system is an integration of three main microwave devices: SIW divider/combiner taking a shape of wraparound rhombic with two isolated output ports, SIW phase shifter and two arrays of SIW hexagonal diamond of lamda shape slots fractal antenna. The divider operates efficiently in five wide bands [(9.7-11.36)/ (11.84-12.35)] GHz and [(13.5-14.05)/ (14.55-15.46)/ (15.62-16.7)] GHz for X and KU-Band applications respectively. The divider feeds two arrays of SIW fractal array antenna of hexagonal shape; one of them has a phase shifted input using SIW phase shifter. The proposed system is based on SIW technology to meet the requirement of multiple frequency bands for x-band missile guidance, KU-band satellite altimetry and wireless communication system applications. The measurement results have been obtained in laboratory using (R&S ZVB 20 vector network analyzer 10 MHz: 20 GHz) with agreement between about 11 resonance operating frequencies of the radiating antenna for both simulated and measured results. For one watt incident power the obtained antenna parameters were found to be 𝑆 11 = −43 𝑑𝐵 , U=0.72 W/Str., accepted power=0.99 W, radiated power=0.98 W, absolute directivity, D =9.7, absolute gain, G =7.1 and radiation efficiency = 98% at f = 13.7 GHz as the most agreement frequency point between simulation and implementation results.
{"title":"Investigation and Implementation of Integrated SIW System for Hexagonal Diamond of Lamda Shape Slots Fractal Array Antenna for X and KU-Band Applications","authors":"A. Miligy, Asem Hussein, Hassn Nadir, M. Rizk","doi":"10.21608/ijt.2021.266277","DOIUrl":"https://doi.org/10.21608/ijt.2021.266277","url":null,"abstract":": This paper introduces an investigation and implementation of integrated SIW system using Rogger RT/duriod 5880 substrate of ε r = 2.2 , tan δ = 0.0009 and thickness 0.79 mmsimulated using HFSS. The proposed system is an integration of three main microwave devices: SIW divider/combiner taking a shape of wraparound rhombic with two isolated output ports, SIW phase shifter and two arrays of SIW hexagonal diamond of lamda shape slots fractal antenna. The divider operates efficiently in five wide bands [(9.7-11.36)/ (11.84-12.35)] GHz and [(13.5-14.05)/ (14.55-15.46)/ (15.62-16.7)] GHz for X and KU-Band applications respectively. The divider feeds two arrays of SIW fractal array antenna of hexagonal shape; one of them has a phase shifted input using SIW phase shifter. The proposed system is based on SIW technology to meet the requirement of multiple frequency bands for x-band missile guidance, KU-band satellite altimetry and wireless communication system applications. The measurement results have been obtained in laboratory using (R&S ZVB 20 vector network analyzer 10 MHz: 20 GHz) with agreement between about 11 resonance operating frequencies of the radiating antenna for both simulated and measured results. For one watt incident power the obtained antenna parameters were found to be 𝑆 11 = −43 𝑑𝐵 , U=0.72 W/Str., accepted power=0.99 W, radiated power=0.98 W, absolute directivity, D =9.7, absolute gain, G =7.1 and radiation efficiency = 98% at f = 13.7 GHz as the most agreement frequency point between simulation and implementation results.","PeriodicalId":42285,"journal":{"name":"International Journal of Interdisciplinary Telecommunications and Networking","volume":"9 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76134596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-19DOI: 10.21608/ijt.2021.266284
Abdalrahman Adel, A. Almslmany, Mohamed Mabrouk, Mohamed El hadad, Mohamed Alamir, M. Alshershby
: In the past two decades, the important role of high-energy lasers (HEL) has emerged in various civilian and military fields. Therefore, foundations and theories of high-power laser radiation have been developed to serve these applications, including the high-power laser aerosol test chamber. This room simulates different weather conditions in a clear and misty atmosphere. In applications that operate at long range, for example, high-energy laser weapons are used to secure an important area against guided bombs. Changes in climatic conditions are an important and influencing factor in the method of high-energy laser radiation, so atmospheric conditions such as industrial weather had to be simulated in the test room. In this paper the interaction between laser beam and different metals such as stainless steel and aluminum was measured with accurate values of heat capacity (HC) at 1.4 JC and melting point (MP) by temperature 600C and 1000C respec-tively reached in the presence of different types of aerosols with real experiments in order to simulate weather conditions in the far field. These experiments were conducted in a High Energy Laser Chamber Test (HELCT) that was previously designed and imple-mented by the authors.
{"title":"Design and Implementation of High-Power Fiber Laser Cham-ber Test Under Different Aerosols Conditions","authors":"Abdalrahman Adel, A. Almslmany, Mohamed Mabrouk, Mohamed El hadad, Mohamed Alamir, M. Alshershby","doi":"10.21608/ijt.2021.266284","DOIUrl":"https://doi.org/10.21608/ijt.2021.266284","url":null,"abstract":": In the past two decades, the important role of high-energy lasers (HEL) has emerged in various civilian and military fields. Therefore, foundations and theories of high-power laser radiation have been developed to serve these applications, including the high-power laser aerosol test chamber. This room simulates different weather conditions in a clear and misty atmosphere. In applications that operate at long range, for example, high-energy laser weapons are used to secure an important area against guided bombs. Changes in climatic conditions are an important and influencing factor in the method of high-energy laser radiation, so atmospheric conditions such as industrial weather had to be simulated in the test room. In this paper the interaction between laser beam and different metals such as stainless steel and aluminum was measured with accurate values of heat capacity (HC) at 1.4 JC and melting point (MP) by temperature 600C and 1000C respec-tively reached in the presence of different types of aerosols with real experiments in order to simulate weather conditions in the far field. These experiments were conducted in a High Energy Laser Chamber Test (HELCT) that was previously designed and imple-mented by the authors.","PeriodicalId":42285,"journal":{"name":"International Journal of Interdisciplinary Telecommunications and Networking","volume":"3 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73102318","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-18DOI: 10.21608/ijt.2021.266285
Mustafa Abd el rahman, Mohamed elharmel, Roshdy Abdelrasol, Mohamed Zagloul, M. Elghamry
: Positioning is very important worldwide in several fields, and it can be deter-mined by several ways. The most popular ways are Global Navigation Satellite System (GNSS) and Inertial Navigation Systems (INS). Both techniques have advantages and disadvantages. Accurate positioning is one of the privileges of GNSS, while INS overtops in indoor places, despite low accuracy after long duration. Sensibility to interference and multipath are the principal downsides of GNSS structure, which might be the two primary assets of mistakes in position estimations. The main impact of interference at (GNSS) receiver, consequently dropping its cap potential to navigate, is that it lessens the signal to noise ratio (SNR) of navigational signal such that the receiver is not able to reap measure-ments from the satellite. A comprehensive survey of interference suppression methods is presented in this paper and the interference suppression techniques are compared. Two new recommended filter designs to detect spoofing and optimize acquisition in the presence of interference are proposed.
{"title":"GNSS Interference Suppression Techniques: A Survey","authors":"Mustafa Abd el rahman, Mohamed elharmel, Roshdy Abdelrasol, Mohamed Zagloul, M. Elghamry","doi":"10.21608/ijt.2021.266285","DOIUrl":"https://doi.org/10.21608/ijt.2021.266285","url":null,"abstract":": Positioning is very important worldwide in several fields, and it can be deter-mined by several ways. The most popular ways are Global Navigation Satellite System (GNSS) and Inertial Navigation Systems (INS). Both techniques have advantages and disadvantages. Accurate positioning is one of the privileges of GNSS, while INS overtops in indoor places, despite low accuracy after long duration. Sensibility to interference and multipath are the principal downsides of GNSS structure, which might be the two primary assets of mistakes in position estimations. The main impact of interference at (GNSS) receiver, consequently dropping its cap potential to navigate, is that it lessens the signal to noise ratio (SNR) of navigational signal such that the receiver is not able to reap measure-ments from the satellite. A comprehensive survey of interference suppression methods is presented in this paper and the interference suppression techniques are compared. Two new recommended filter designs to detect spoofing and optimize acquisition in the presence of interference are proposed.","PeriodicalId":42285,"journal":{"name":"International Journal of Interdisciplinary Telecommunications and Networking","volume":"7 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74889237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-18DOI: 10.21608/ijt.2021.266173
Ehab Ali, A. Abdelsalam, Ahmed HossamEldin
: Photovoltaics are extensively used as a premium device for generating electricity from solar planet's power. Under uniform radiation, the photovoltaics' output characteristics have a non-linear frame with a unique maximum power point. This point changes its position when a sudden change in solar radiation occurs. Otherwise, when the PV string is subjected to partial shading conditions, several power peaks have appeared with only one Global maximum power. The classical maximum power point tracking strategies always fails to deal with these dynamic difficulties, especially, under unex-pected climatic changes. Many soft computing methods are previously constructed to deal with these problems, but the main hurdles remain how to manage this tracking with the fastest time, the smallest power oscillations, and the greatest efficiency. In this paper, a modified Particle Swarm Optimization algorithm was proposed that capable of excluding or promoting certain parts of the solution search area until reach and track the max power point. The suggested method has been simulated and practically tested and the results indicate that the suggested method outperforms the typical Particle Swarm Optimization algorithm with regards to the speed of Global maximum power point tracking with the lowest oscillation and highest efficiency. (PS); Particle Swarm Optimization (PSO); Global Maximum Power Point (GMPP).
{"title":"Fast Convergence Modified Particle Swarm Optimization Al-gorithm to Follow up String PV Modules Maximum Power Point under Different Climatic Conditions","authors":"Ehab Ali, A. Abdelsalam, Ahmed HossamEldin","doi":"10.21608/ijt.2021.266173","DOIUrl":"https://doi.org/10.21608/ijt.2021.266173","url":null,"abstract":": Photovoltaics are extensively used as a premium device for generating electricity from solar planet's power. Under uniform radiation, the photovoltaics' output characteristics have a non-linear frame with a unique maximum power point. This point changes its position when a sudden change in solar radiation occurs. Otherwise, when the PV string is subjected to partial shading conditions, several power peaks have appeared with only one Global maximum power. The classical maximum power point tracking strategies always fails to deal with these dynamic difficulties, especially, under unex-pected climatic changes. Many soft computing methods are previously constructed to deal with these problems, but the main hurdles remain how to manage this tracking with the fastest time, the smallest power oscillations, and the greatest efficiency. In this paper, a modified Particle Swarm Optimization algorithm was proposed that capable of excluding or promoting certain parts of the solution search area until reach and track the max power point. The suggested method has been simulated and practically tested and the results indicate that the suggested method outperforms the typical Particle Swarm Optimization algorithm with regards to the speed of Global maximum power point tracking with the lowest oscillation and highest efficiency. (PS); Particle Swarm Optimization (PSO); Global Maximum Power Point (GMPP).","PeriodicalId":42285,"journal":{"name":"International Journal of Interdisciplinary Telecommunications and Networking","volume":"41 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84751608","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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