2015 1st International Conference on Wireless and Telematics (ICWT)最新文献

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Performance study of channel estimation for DVB-T services in HAPS communication HAPS通信中DVB-T业务信道估计性能研究
2015 1st International Conference on Wireless and Telematics (ICWT) Pub Date : 2015-11-01 DOI: 10.1109/ICWT.2015.7449254
S. Wahyuni, Iskandar
{"title":"Performance study of channel estimation for DVB-T services in HAPS communication","authors":"S. Wahyuni, Iskandar","doi":"10.1109/ICWT.2015.7449254","DOIUrl":"https://doi.org/10.1109/ICWT.2015.7449254","url":null,"abstract":"DVB-T (Digital Video Broadcasting-Terrestrial) is an open standard in digital video transmission which has been internationally recognized. DVB-T standard issued by ETSI. This research will analyze the effect of DVB-T channel estimation for coverage improvement on High Altitude Platforms Station (HAPS)system. HAPS are known as stratospheric broadband telecommunications infrastructure is a standard similar to the satellite, which was placed in the stratosphere. HAPs channel can provide LOS relationship between HAPS platform with the user so that it can be simulated with rician channel. Based on the research results, the performance of DVB-T services in the HAPS system is influenced by the type of modulation used and the mode of work, the influence of channel estimation using least squares (LS) to increase coverage up to 34.4 km with a value of Eb/No 20 dB.","PeriodicalId":371814,"journal":{"name":"2015 1st International Conference on Wireless and Telematics (ICWT)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133756867","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}
引用次数: 0
Performance analysis for uniform and binomial distribution on contention window using different hop distance 不同跳距下竞争窗口均匀分布和二项分布的性能分析
2015 1st International Conference on Wireless and Telematics (ICWT) Pub Date : 2015-11-01 DOI: 10.1109/ICWT.2015.7449258
N. I. Shuhaimi, Heriansyah, T. Juhana, A. Kurniawan
{"title":"Performance analysis for uniform and binomial distribution on contention window using different hop distance","authors":"N. I. Shuhaimi, Heriansyah, T. Juhana, A. Kurniawan","doi":"10.1109/ICWT.2015.7449258","DOIUrl":"https://doi.org/10.1109/ICWT.2015.7449258","url":null,"abstract":"In this paper, we present a mathematical analysis on the performance of uniformly distributed and non-uniformly distributed backoff timer based on binomial algorithm for contention window. We evaluates these protocols under mathematical modelling in order to analyze the average throughput, end-to-end delay and collision probability performance by using different value of hop distance during data transmission process by varying number of nodes from 50 to 300 vehicles. The simulation results show that binomial distribution outperforms the conventional uniform distribution in terms of throughput, delay and collision probability in all scenarios. We also can observed that by using longer hop distance, the better performances have been achieved in both distributions, particularly by using binomial distribution. Thus we can say that the binomial probability distribution that is specifically designed to replace the conventional uniform probability distribution in order to differentiate the selection probability during the backoff process of selecting the transmission slot can be implemented in MAC protocol for vehicular network.","PeriodicalId":371814,"journal":{"name":"2015 1st International Conference on Wireless and Telematics (ICWT)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116474920","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}
引用次数: 1
2-Stage microstrip combline BPF with capacitor chip incorporation 二级微带结合BPF与电容芯片集成
2015 1st International Conference on Wireless and Telematics (ICWT) Pub Date : 2015-11-01 DOI: 10.1109/ICWT.2015.7449248
Bima Saut Boyando, A. Munir
{"title":"2-Stage microstrip combline BPF with capacitor chip incorporation","authors":"Bima Saut Boyando, A. Munir","doi":"10.1109/ICWT.2015.7449248","DOIUrl":"https://doi.org/10.1109/ICWT.2015.7449248","url":null,"abstract":"In this paper, the design and implementation of 2-stage microstrip combline bandpass filter (BPF) is proposed with capacitor chip incorporation. The initial design of filter is taken from the existing one with some improvements in the performances to be suitable for the 2.4GHz application. The proposed filter is designed on a 0.8mm thick FR4 Epoxy dielectric substrate with the dimension of 8.9mm × 32mm. Two tuning capacitor chips of 2pF are incorporated into resonators of filter and another capacitor chip is inserted into inter-resonator to connect each resonator of filter. After obtaining an optimum design, a prototype of 2-stage microstrip combline BPF is realized through wet etching technique. From characterization result, it shows that the realized filter has center frequency of 2.375GHz with -3dB working bandwidth of 170MHz. The measured bandwidth is 30MHz narrower than the simulated one which has center frequency and -3dB working bandwidth of 2.4GHz and 200MHz, respectively.","PeriodicalId":371814,"journal":{"name":"2015 1st International Conference on Wireless and Telematics (ICWT)","volume":"87 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133787081","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}
引用次数: 2
A study of square loop resonator filter at 2350 MHz for nanosatellite application 用于纳米卫星的2350 MHz方形环谐振器滤波器的研究
2015 1st International Conference on Wireless and Telematics (ICWT) Pub Date : 2015-11-01 DOI: 10.1109/ICWT.2015.7449220
Muhammad Purwa Manggala, H. Wijanto, Budi Syihabuddin
{"title":"A study of square loop resonator filter at 2350 MHz for nanosatellite application","authors":"Muhammad Purwa Manggala, H. Wijanto, Budi Syihabuddin","doi":"10.1109/ICWT.2015.7449220","DOIUrl":"https://doi.org/10.1109/ICWT.2015.7449220","url":null,"abstract":"Tel-USAT payload communication block consists of S-Band transmitter, narrow band pass filter, and low dimension antenna in simplex mode. Filter selects the signal at certain frequencies to minimize the interference from adjacent frequencies. For nanosatellite application, filter has some requirements: small dimension, space proven material, and narrow bandwidth. One of methods that meets the requirements is a loop resonator. In designation of the loop resonator, there are some modifications such as chamfer in the corner of resonator, gap to avoid the loosely coupled and perturbation. The filter in the dimension of 40mm × 40mm × 1.67mm with FR4 dielectric material has obtained 44dB return loss or 1% reflected power back to input port, 6dB insertion loss, and phase shift 180 degree in linear characteristic.","PeriodicalId":371814,"journal":{"name":"2015 1st International Conference on Wireless and Telematics (ICWT)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132971398","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}
引用次数: 1
BER performance analysis of APD-based FSO system for optical inter-HAPS link 光纤间haps链路中基于apd的FSO系统误码率分析
2015 1st International Conference on Wireless and Telematics (ICWT) Pub Date : 2015-11-01 DOI: 10.1109/ICWT.2015.7449232
H. Akbar, Iskandar
{"title":"BER performance analysis of APD-based FSO system for optical inter-HAPS link","authors":"H. Akbar, Iskandar","doi":"10.1109/ICWT.2015.7449232","DOIUrl":"https://doi.org/10.1109/ICWT.2015.7449232","url":null,"abstract":"This paper aims at evaluating bit error rate (BER) performance of optical inter platform link using intensity modulation/direct detection (IM/DD) with on-off keying (OOK) and an avalanche photodiode (APD) receiver based on analyzed theoretically. The atmosphere is not an ideal communication channel. Atmospheric turbulence is one of the main impairment affecting the operation of optical inter platform link. The log normal distribution is used as inter-HAP channel model to describe the effect of atmospheric turbulence. The BER performance is theoretically derived with taking into account various FSO link conditions and receiver parameters. The numerical results ilustrate that the optimal APD gain to achieve minimum BER depends on data rate, the link distance, and atmospheric turbulence strength.","PeriodicalId":371814,"journal":{"name":"2015 1st International Conference on Wireless and Telematics (ICWT)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125960437","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}
引用次数: 6
A text mining application of emotion classifications of Twitter's users using Naïve Bayes method 使用Naïve贝叶斯方法对Twitter用户进行情感分类的文本挖掘应用
2015 1st International Conference on Wireless and Telematics (ICWT) Pub Date : 2015-11-01 DOI: 10.1109/ICWT.2015.7449218
Liza Wikarsa, Sherly Novianti Thahir
{"title":"A text mining application of emotion classifications of Twitter's users using Naïve Bayes method","authors":"Liza Wikarsa, Sherly Novianti Thahir","doi":"10.1109/ICWT.2015.7449218","DOIUrl":"https://doi.org/10.1109/ICWT.2015.7449218","url":null,"abstract":"Twitter is one of social media with more than 500 million users and 400 million tweets per day. In any written tweet of Twitter users it contains various emotions. Most research on the use of social media classifies sentiments into three categories that are positive, negative, and neutral. However, none of these studies has developed an application that can detect user emotions in the social media, particularly on Twitter. Hence, this research developed a text mining application to detect emotions of Twitter users that are classified into six emotions, namely happiness, sadness, anger, disgust, fear, and surprise. Three main phases of the text mining utilized in this application were preprocessing, processing, and validation. Activities conducted in the preprocessing phase were case folding, cleansing, stop-word removal, emoticons conversion, negation conversion, and tokenization to the training data and the test data based on the sentiment analysis that performed morphological analysis to build several models. In the processing phase, it performed weighting and classification using the Naive Bayes algorithm on the validated model. The process for measuring the level of accuracy generated by the application using 10-fold cross validation was done in the validation phase. The findings showed that this application is able to achieve 83% accuracy for 105 tweets. In order to get a higher accuracy, one requires a better model in training data.","PeriodicalId":371814,"journal":{"name":"2015 1st International Conference on Wireless and Telematics (ICWT)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130464377","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}
引用次数: 51
Polygon WebGIS of distric level for development and monitoring of PUSKESMAS in health care services 用于开发和监测卫生保健服务中PUSKESMAS的区域级多边形WebGIS
2015 1st International Conference on Wireless and Telematics (ICWT) Pub Date : 2015-11-01 DOI: 10.1109/ICWT.2015.7449225
Istikmal, T. Wibowo, L. V. Yovita
{"title":"Polygon WebGIS of distric level for development and monitoring of PUSKESMAS in health care services","authors":"Istikmal, T. Wibowo, L. V. Yovita","doi":"10.1109/ICWT.2015.7449225","DOIUrl":"https://doi.org/10.1109/ICWT.2015.7449225","url":null,"abstract":"In the future, Community Health Center (PUSKESMAS) spread throughout Indonesia is expected to play an important role in improving public health. Currently, the government still has obstacles in monitoring the readiness level of PUSKESMAS service and conditions. This research is aimed at creating a prototype, web-based geographic information system (WEBGIS) with the polygon method. This application is used as PUSKESMAS monitoring apps at the district level. Monitoring conditions include the availability of health workers, medical equipment standards, the PUSKESMAS kind and type, PUSKESMAS building conditions, as well as the spread of disease. This application is named SIGAPNAS (Sistem Informasi Geografis PUSKESMAS Nasional); a prototype of this application is an earlier prototype development that is expected to assist the public in seeking PUSKESMAS information. This application can also help the government in monitoring the development and levels of PUSKESMAS and the spread of a disease in an area. SIGAPNAS is expected to help the government succeed in national health programs through information technology.","PeriodicalId":371814,"journal":{"name":"2015 1st International Conference on Wireless and Telematics (ICWT)","volume":"138 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114813939","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}
引用次数: 3
A joint approach to multipath routing and rate adaptation for congestion control in OpenFlow software defined network OpenFlow软件定义网络中用于拥塞控制的多路径路由和速率自适应联合方法
2015 1st International Conference on Wireless and Telematics (ICWT) Pub Date : 2015-11-01 DOI: 10.1109/ICWT.2015.7449209
S. N. Hertiana, Hendrawan, A. Kurniawan
{"title":"A joint approach to multipath routing and rate adaptation for congestion control in OpenFlow software defined network","authors":"S. N. Hertiana, Hendrawan, A. Kurniawan","doi":"10.1109/ICWT.2015.7449209","DOIUrl":"https://doi.org/10.1109/ICWT.2015.7449209","url":null,"abstract":"Software Defined Network is a new paradigm in data communication networks. In contrast to the traditional internet network, SDN separates the control function and the function forwarding. SDN controller operates on the principle of a centralized logical controller. This centralized control causes the controller to have a global network knowledge so that SDN can be more effective in managing the network. In this paper, we apply a congestion control mechanism by utilizing the global knowledge possessed by the controller. Congestion control mechanisms implemented by combining multipath routing mechanisms and rate adaptation in an integrated manner. The controller uses the information from the switches that are used to determine the route along the source and destination, as well as to determine the appropriate rate for each flow. The experimental results show that the combination of routing and rate adaptation can effectively be used to control congestion, resulting in a better performance than single path routing and multipath routing without rate adaptation.","PeriodicalId":371814,"journal":{"name":"2015 1st International Conference on Wireless and Telematics (ICWT)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122991504","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}
引用次数: 13
Database design for agile stakeholder communication 面向敏捷干系人沟通的数据库设计
2015 1st International Conference on Wireless and Telematics (ICWT) Pub Date : 2015-11-01 DOI: 10.1109/ICWT.2015.7449210
V. P. Rantung, Q. Kainde
{"title":"Database design for agile stakeholder communication","authors":"V. P. Rantung, Q. Kainde","doi":"10.1109/ICWT.2015.7449210","DOIUrl":"https://doi.org/10.1109/ICWT.2015.7449210","url":null,"abstract":"Communication is the key to any successful project development, because it is a process of transmitting ideas and information. In many cases, a project developer communicates but still lack understanding. Stakeholders and the project developers often make the same mistake and too easily consider a model to be properly communicated or validated. They fail because of human factors which are an important and diverse, and non-technical issue [10]. The issue is especially important regarding to the process of communication. We focus mostly on communication with stakeholders, taking onto account diversity such as background, knowledge, skills, concerns, focus, interest, language (jargon, terminology), etc. Based on the principles, this research presents a database design of Agile stakeholder communication support.","PeriodicalId":371814,"journal":{"name":"2015 1st International Conference on Wireless and Telematics (ICWT)","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122613092","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}
引用次数: 1
Application and data level interoperability on virtual machine in cloud computing environment 云计算环境下虚拟机的应用级和数据级互操作性
2015 1st International Conference on Wireless and Telematics (ICWT) Pub Date : 2015-11-01 DOI: 10.1109/ICWT.2015.7449238
S. Zahara, I. Pratomo, D. Rahardjo
{"title":"Application and data level interoperability on virtual machine in cloud computing environment","authors":"S. Zahara, I. Pratomo, D. Rahardjo","doi":"10.1109/ICWT.2015.7449238","DOIUrl":"https://doi.org/10.1109/ICWT.2015.7449238","url":null,"abstract":"The rapid development of internet nowadays impact on increasing many applications that utilizing cloud computing technology for the sake of organization. Increasing requirements in applications caused by inevitable business process growth in organization enabling a tendency to switch from old cloud provider to more reliable one. However, in practice, application functionality failures often occur in case of migrating process to new cloud system due to several circumstances e.g. vendor lock-in problem. This paper introduces a new method for system migration testing between two cloud providers. The goal is to determine the interoperability level of application and data in virtual machine within hypervisor system that moves from one cloud provider to another cloud provider. The contribution of this paper is to provide a reference test method for measuring the interoperability between the two cloud systems were migrated.","PeriodicalId":371814,"journal":{"name":"2015 1st International Conference on Wireless and Telematics (ICWT)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127653091","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}
引用次数: 3
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