Mario Romero-Castro, M. Reyes-Ayala, E. A. Andrade-Gonzalez, N. Reyes-Ayala, H. Terres-Peña
{"title":"Broadband Printed Modified Dipole for Personal Communication Systems","authors":"Mario Romero-Castro, M. Reyes-Ayala, E. A. Andrade-Gonzalez, N. Reyes-Ayala, H. Terres-Peña","doi":"10.37394/23204.2020.19.26","DOIUrl":"https://doi.org/10.37394/23204.2020.19.26","url":null,"abstract":"In this paper a modified printed dipole is proposed for mobile terminals operating in the first band of Personal Communication System (PCS) that is ranging from 800 to 900 MHz. One of the most important features of this kind of antenna is its wide bandwidth as required in the mentioned band. The modified design of the proposed antenna allows the user to move in any direction as is usual in mobile communications. The results of this article include an analytical design, simulations that have been performed numerically using a Finite Element Method (FEM) computational tool, structure optimization in order to maximize the antenna bandwidth and experimental measurements with the aim of spatial evaluating of electromagnetic radiated fields.","PeriodicalId":330638,"journal":{"name":"WSEAS TRANSACTIONS ON COMMUNICATIONS","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116649397","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}
{"title":"Throughput Analysis for Cooperative Cognitive Radio Networks using Cyclostationary Detection","authors":"E. Barkat","doi":"10.37394/23204.2020.19.28","DOIUrl":"https://doi.org/10.37394/23204.2020.19.28","url":null,"abstract":"Detection of primary users (PUs) in the presence of interference and noise and improvement of spectrum utilization is one of the aims of cognitive radio (CR). In this paper, a fully distributed cooperative spectrum sensing scheme based on cyclostationary features techniques is proposed. The primary signal detection is realized by an orthogonal frequency division multiplexing (OFDM) sensing algorithm; each secondary user (SU) makes decisions about the PU by exchanging their own measurements with the local neighbors. The distributed scheme is analyzed on a network layer, where the throughput performance is analyzed in terms of sensing accuracy, frame duration, and system overhead. An analytical expression for the SU throughput is derived, in addition to investigating the issue of trade offs between time and overhead. Simulation results showed the relationship between the throughput and the sensing time, the effect of increasing the number of SUs on the throughput, and the outcome of increasing traffic intensity on the system performance","PeriodicalId":330638,"journal":{"name":"WSEAS TRANSACTIONS ON COMMUNICATIONS","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131515662","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}
{"title":"An Overview of LoRaWAN","authors":"Biswajit Paul","doi":"10.37394/23204.2020.19.27","DOIUrl":"https://doi.org/10.37394/23204.2020.19.27","url":null,"abstract":"LoRa is an IoT enabling technology which is particularly suitable for low data rate applications. The technology can achieve extended network coverage while operating in unlicensed ISM band and falls into the category of LowPowerWideAreaNetworks (LPWANs) technologies. Among the noncellular based LPWAN enabling technologies, LoRa has got remarkable attention due to its fast adoption by industries. LoRa through wireless modulation enables the endnodes to establish long distance communication while LoRaWAN refers to the communication protocol and system architecture. In this paper, an overview of LoRaWAN is presented.","PeriodicalId":330638,"journal":{"name":"WSEAS TRANSACTIONS ON COMMUNICATIONS","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133145468","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}
Nusrat Jahan, A. R. Khan, M. Uddin, Mahamudul Hasan Rana
{"title":"Challenges and Solutions on Interference Management in D2D System of Cellular Network","authors":"Nusrat Jahan, A. R. Khan, M. Uddin, Mahamudul Hasan Rana","doi":"10.37394/23204.2020.19.25","DOIUrl":"https://doi.org/10.37394/23204.2020.19.25","url":null,"abstract":"A single bidirectional link is used to allow communication between two devices in the device-todevice (D2D) communication system. D2D technology has to implement with the current cellular system. As both users D2D and cellular use the same licensed spectrum for transmission the chances of interferences increases. It is challenging for researchers to find out the proper mechanism to decrease interference and maximize performances. In this paper, we try to survey the challenges and their solutions to enable D2D communication in the cellular network with low interference. Here we describe the peer discover, mode selection process and interference management with power control and resource allocation. Finally, we can say that with proper power control, spectrum slicing and resource allocation we can mitigate co-tier and cross-tier interferences.","PeriodicalId":330638,"journal":{"name":"WSEAS TRANSACTIONS ON COMMUNICATIONS","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128751526","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}
{"title":"Optimal Probabilistic Scheduling in Time Slotted Multiple Access","authors":"K. Demestichas, Evgenia F. Adamopoulou","doi":"10.37394/23204.2020.19.24","DOIUrl":"https://doi.org/10.37394/23204.2020.19.24","url":null,"abstract":"This paper presents an efficient scheduling model for the delivery of sensing data in networks that use time division multiple access. The model is capable of achieving the optimal solution in terms of total delivery time, given certain constraints on radio resources. The proposed solution adopts a probabilistic approach which is based on a problem formulation utilizing chained binomial distributions.","PeriodicalId":330638,"journal":{"name":"WSEAS TRANSACTIONS ON COMMUNICATIONS","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130589657","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}
{"title":"Analysis of Properties of Microfita Antenna with Altered Ground Plane","authors":"O. Lavor","doi":"10.37394/23204.2020.19.23","DOIUrl":"https://doi.org/10.37394/23204.2020.19.23","url":null,"abstract":"This work analyzes the influence of a modified ground plane on a microfiche antenna with a circular patch on a rectangular substrate. The considered modification is the connection of a rectangular border to a central circle. When considering the change, better bandwidth is achieved leading to an increase of 122%. The prototype is built so that measured and simulated data can be compared.","PeriodicalId":330638,"journal":{"name":"WSEAS TRANSACTIONS ON COMMUNICATIONS","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124523401","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}
{"title":"A Study on coupling Coefficients Between Adjacent Earth Systems","authors":"H. Kijima, Koji Yoshida, C. Okabayashi","doi":"10.37394/23204.2020.19.21","DOIUrl":"https://doi.org/10.37394/23204.2020.19.21","url":null,"abstract":"This paper proposes a calculation method and a measurement method of coupling coefficients between adjacent earth systems. We consider the different earth systems which are installed nearby. An abnormal current such as a power fault current flowing into one earth system may raise the potential of another earth system and damage the equipment connected to it. For this reason, it is necessary to make the earth potential rise between earth systems more clear. Therefore, we have derived a method for calculating the coupling coefficients between adjacent earth systems composed of complicated electrode arrangement. We applied the current superposition method for the calculation. We also propose two simple and accurate measurement methods of them. As a result of measuring the actual earth systems in the fields, it was confirmed that the calculated values and the measured values are in good agreement.","PeriodicalId":330638,"journal":{"name":"WSEAS TRANSACTIONS ON COMMUNICATIONS","volume":"359 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115879629","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}
{"title":"Quadrature Sandwich Rectenna for Wireless Power Transfer","authors":"Rached O. Agwil, S. Tatu","doi":"10.37394/23204.2020.19.19","DOIUrl":"https://doi.org/10.37394/23204.2020.19.19","url":null,"abstract":"This novel work presents a quadrature sandwich rectenna circuit for collecting RF from four inputports at different angles. The scheme's high efficiency and increase in output power are significant for theoperation of wireless electronic devices. This work demonstrates the requirements of self-powering.Specifically, simulation efficiency is shown to achieve 77%, and input power is 0 dBm for a 5 KΩ resistanceload and dual-band operation. The results of this experiment are encouraging in terms of wireless powering ofsome devices in wireless telecommunication systems. This scheme can also be applied to radio frequencywireless power transfer and harvesting, and would be useful in industrial, scientific, and medical applications.Furthermore, its mode of operation is sustainable, and it is compact.","PeriodicalId":330638,"journal":{"name":"WSEAS TRANSACTIONS ON COMMUNICATIONS","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125464995","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}
{"title":"Review Reports on User Authentication Methods in Cyber Security","authors":"A. Vaish, Anand Sharma, Anshu Sharma","doi":"10.37394/23204.2020.19.17","DOIUrl":"https://doi.org/10.37394/23204.2020.19.17","url":null,"abstract":"The Internet has merged itself as an extremely ground- breaking stage that has changed the correspondence and business exchanges. Presently, the quantity of clients exploring the Internet is more than 2.4 billion. This enormous group of spectators requests online business, learning sharing, informal organizations and so on, which became exponentially in the course of recent years. Accordingly, it prompts the requirement for security and improved protection. As of late, misrepresentation over the Internet comprises one of the fundamental disadvantages for the across the board of the utilization of business applications. Along these lines, the three imperative security issues occur each day in our universe of straightforward design, even more decisively: recognizable proof, confirmation and approval. Distinguishing proof is a procedure that empowers acknowledgment of a substance, which might be either, a human, a machine, or another advantage, for example, a product program. In security frameworks, validation and approval are two reciprocal systems for figuring out who can get to the data assets over a system. Numerous arrangements have been proposed in the writing, from a straightforward secret phrase to late advancements dependent on RFID (Radio Frequency Identification) or biometrics. This paper gives an outline on existing verification techniques, and its upsides and downsides when planning online assistance.","PeriodicalId":330638,"journal":{"name":"WSEAS TRANSACTIONS ON COMMUNICATIONS","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130624478","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}
{"title":"Experimental and Simulation Study of Effects in Etched Patch Antenna with Multi Slots","authors":"Ambresh P. Ambalgi, S. Sujata, A. Vaish","doi":"10.37394/23204.2020.19.16","DOIUrl":"https://doi.org/10.37394/23204.2020.19.16","url":null,"abstract":"This paper aims for the design and development of a multi slotted novel patch antenna with multiband characteristics. The work focused on designing a patch, feedline with novel multi-slots on the same patch which can be commonly used in wireless applications. In addition, the analysis shows the effects of the improved antenna properties obtained by etching such novel slots on epoxy dielectric substrate using photolithography process. The paper concentrated on the design aspects of the patch antenna with slot dimensions as a function of operating wavelength (λ) to get better results. The antennas are implemented with the help of software package V15.4 - Integral Three-Dimension Equation (IE3D) EM simulator. The experimental and simulation findings show the overall required bandwidth of 1120MHz with a return loss of -43dB achieving a gain of 8.39dB with better radiation characteristics.","PeriodicalId":330638,"journal":{"name":"WSEAS TRANSACTIONS ON COMMUNICATIONS","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133221230","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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