无线互联科技Pub Date : 2011-02-01DOI: 10.1109/WIRELESSVITAE.2011.5940874
K. Dhanapal, A. Somasundara, S. Paul
{"title":"Personal virtual multimedia library (PVML) in a converged network","authors":"K. Dhanapal, A. Somasundara, S. Paul","doi":"10.1109/WIRELESSVITAE.2011.5940874","DOIUrl":"https://doi.org/10.1109/WIRELESSVITAE.2011.5940874","url":null,"abstract":"There is lot of personal multimedia content (audio, image, video) being generated due to the ease of generating such content with the everyday devices, such as, mobile phones and also due to the plummeting cost of media-generating devices, such as, digital cameras which have made them ubiquitously available. Almost everyone wants to share his/her personal content with family and friends. In addition to this sharing, there needs to be proper mechanism of accessing this content by technically non-savvy people. This is more so a requirement for the masses in an emerging economy like India where broadband access is almost non-existent, and for the elderly people everywhere, who use TV as their main device for accessing media. We present a system, which sits in the Internet cloud, simplifies content upload and organization, and allows seamless sharing and access of the multimedia content across networks and devices. Most importantly, the content can be accessed from any one of the 3 types of screens: web/PC, mobile, TV. The system hides all the complexity of the storage, formatting, and organization of the media content from the users. Performance evaluation of the system shows that it is robust against variations of bandwidth, delay and jitter in a mobile wireless network and is reasonably scalable with the increase in the number of users.","PeriodicalId":68078,"journal":{"name":"无线互联科技","volume":"102 1","pages":"1-8"},"PeriodicalIF":0.0,"publicationDate":"2011-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75741901","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}
无线互联科技Pub Date : 2011-02-01DOI: 10.1109/WIRELESSVITAE.2011.5940866
V. Labay, T. Rao
{"title":"Microstrip-to-substrate integrated waveguide aperture couplers","authors":"V. Labay, T. Rao","doi":"10.1109/WIRELESSVITAE.2011.5940866","DOIUrl":"https://doi.org/10.1109/WIRELESSVITAE.2011.5940866","url":null,"abstract":"Multi-aperture couplers between microstrip circuitry and substrate-integrated waveguides are presented. The design procedure is described, and couplers formed by single-aperture and dual-aperture configurations are presented. It is demonstrated that the coupling can be as tight as 1 dB but that weaker coupling leads to more broadband and flatter coupler performance. Designs are carried out in an HFSS environment; comparison with CST validate the design procedure. Dimensions and parameters of all couplers are presented as guidelines for general design purpose.","PeriodicalId":68078,"journal":{"name":"无线互联科技","volume":"36 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2011-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90156325","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}
无线互联科技Pub Date : 2011-02-01DOI: 10.1109/WIRELESSVITAE.2011.5940864
J. Zechinelli-Martini, P. Bucciol, Genoveva Vargas-Solar
{"title":"Energy aware data aggregation in wireless sensor networks","authors":"J. Zechinelli-Martini, P. Bucciol, Genoveva Vargas-Solar","doi":"10.1109/WIRELESSVITAE.2011.5940864","DOIUrl":"https://doi.org/10.1109/WIRELESSVITAE.2011.5940864","url":null,"abstract":"This paper proposes a stream aggregation model that exploits sensors' resources, its implementation and experimental validation targeted to environment monitoring. Instead of sampling and then immediately trasmitting the latest samples towards the sink, a sensor temporarily stores samples in a history located in its RAM. Data is then aggregated and transmitted in any of the following cases: when the history is full, when the size of stored data reaches the optimal packet size or the maximum packet payload, or when a query is received. Since the transmitted packets can reach considerable sizes for a typical WSN, the model also provides an adaptive packet-level FEC technique for maintaining the packet error level below a certain threshold selected by the user. Results show that the proposed technique consistently outperforms the standard sample-and-transmit technique, incrementing the sensors' lifetime of at least 50% while at the same time providing a better performance in terms of network packet loss rate. Source data aggregation can also be combined with other in-network aggregation techniques in order to provide even better results.","PeriodicalId":68078,"journal":{"name":"无线互联科技","volume":"26 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2011-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76352631","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}
无线互联科技Pub Date : 2011-02-01DOI: 10.1109/WIRELESSVITAE.2011.5940873
S. Sabreen, M. Malleswaran
{"title":"Neuro-fuzzy controlled Induction Generator system","authors":"S. Sabreen, M. Malleswaran","doi":"10.1109/WIRELESSVITAE.2011.5940873","DOIUrl":"https://doi.org/10.1109/WIRELESSVITAE.2011.5940873","url":null,"abstract":"A Recurrent Functional-Link (FL) based Fuzzy Neural Network (FNN) controller with is proposed in this work to control a three phase Induction Generator (IG) system for stand-alone power application. The ac/dc power converter and a dc/ac power inverter are developed to convert the electric power generated by a three-phase IG from variable frequency and variable voltage to constant frequency and constant voltage, respectively. Moreover, two online-trained recurrent FL-based FNNs are introduced as the regulating controllers for both the dc-link voltage of the ac/dc power converter and the ac line voltage of the dc/ac power inverter. Finally, some simulation results are provided to demonstrate the effectiveness of the proposed recurrent FL-based FNN-controlled Induction Generator system.","PeriodicalId":68078,"journal":{"name":"无线互联科技","volume":"39 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2011-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91389889","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}
无线互联科技Pub Date : 2011-02-01DOI: 10.1109/WIRELESSVITAE.2011.5940933
Kamil H. Suleiman, H. Chan, M. Dlodlo
{"title":"Analysis of serving discipline algorithms for cellular networks","authors":"Kamil H. Suleiman, H. Chan, M. Dlodlo","doi":"10.1109/WIRELESSVITAE.2011.5940933","DOIUrl":"https://doi.org/10.1109/WIRELESSVITAE.2011.5940933","url":null,"abstract":"As user requests arrive randomly in a wireless network, a good serving discipline scheme optimizes the trade-off between resource utilization and quality of service by effectively predicting future demands. In this paper, we analyze research outputs on serving discipline algorithms for cellular networks. The contribution of this paper is two-fold: first we review different serving discipline schemes and we choose the one which we believe is a good scheme. Then we propose an improvement on it and we validate our argument through simulation using the Network Simulator (NS-2).","PeriodicalId":68078,"journal":{"name":"无线互联科技","volume":"37 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2011-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81581529","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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