Compared to other localization algorithms, the SemiDefinite Programming (SDP) approach has proved to deliver accurate results even in noisy backgrounds. In this paper, we propose a novel design for underwater localization systems using SemiDefinite Programming. The objective is to provide marine scientists with a cost-effective efficient way in conducting relevant research. Two designs, fixed-position and magnified-range, are proposed. Both schemes have shown a high accuracy and an outstanding performance according to simulation results. Future research directions are discussed at the end of this paper.
{"title":"GPS-Free Localization Schemes for Underwater Wireless Sensor Networks","authors":"Bo Dong, A. Mahdy","doi":"10.1109/UBICOMM.2009.19","DOIUrl":"https://doi.org/10.1109/UBICOMM.2009.19","url":null,"abstract":"Compared to other localization algorithms, the SemiDefinite Programming (SDP) approach has proved to deliver accurate results even in noisy backgrounds. In this paper, we propose a novel design for underwater localization systems using SemiDefinite Programming. The objective is to provide marine scientists with a cost-effective efficient way in conducting relevant research. Two designs, fixed-position and magnified-range, are proposed. Both schemes have shown a high accuracy and an outstanding performance according to simulation results. Future research directions are discussed at the end of this paper.","PeriodicalId":150024,"journal":{"name":"2009 Third International Conference on Mobile Ubiquitous Computing, Systems, Services and Technologies","volume":"88 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123524201","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}
The remote and automatic reprogramming is an indispensable part in the wireless sensor networks. Especially, the energy saving problem is an important challenge because of a limited energy characteristic. Many kinds of conventional researches about reprogramming have tried to solve the energy saving problem. But they do not consider the energy consumption model and still have inefficient memory access times. In this paper, we propose a tiny function-linking scheme. It performs function relocation to decrease program code shift and connects relocated function with a tiny function-linker to eliminate function caller changes. This proposed scheme reduces access times to Electrically Erasable Programmable Read-Only Memory (EEPROM) and program memory during the decoding procedure of the reprogramming. Experimental results show that our scheme outperforms the previous reprogramming schemes in terms of the energy consumption.
{"title":"Tiny Function-Linking for Energy-Efficient Reprogramming in Wireless Sensor Networks","authors":"Seungku Kim, Jae-Ho Lee, Kyeong Hur, D. Eom","doi":"10.1109/UBICOMM.2009.22","DOIUrl":"https://doi.org/10.1109/UBICOMM.2009.22","url":null,"abstract":"The remote and automatic reprogramming is an indispensable part in the wireless sensor networks. Especially, the energy saving problem is an important challenge because of a limited energy characteristic. Many kinds of conventional researches about reprogramming have tried to solve the energy saving problem. But they do not consider the energy consumption model and still have inefficient memory access times. In this paper, we propose a tiny function-linking scheme. It performs function relocation to decrease program code shift and connects relocated function with a tiny function-linker to eliminate function caller changes. This proposed scheme reduces access times to Electrically Erasable Programmable Read-Only Memory (EEPROM) and program memory during the decoding procedure of the reprogramming. Experimental results show that our scheme outperforms the previous reprogramming schemes in terms of the energy consumption.","PeriodicalId":150024,"journal":{"name":"2009 Third International Conference on Mobile Ubiquitous Computing, Systems, Services and Technologies","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127971080","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}
Zhi Zhang, Zhibo Pang, Jun Chen, Qiang Chen, H. Tenhunen, Li-Rong Zheng, Xiaolang Yan
The rapid development of wireless sensor network and RFID technologies offers a wide range of novel applications and services. In this paper, we present a two-layered wireless network for warehouses and supermarkets to monitor goods storage and sale, and assist for quality management and market analysis. The hierarchical architecture uses IEEE 802.15.4a impulse ultra-wideband radio (IR-UWB) communication protocol between slave sensor nodes and master sensor nodes, and IEEE 802.11b/g between master sensor nodes and server. The performance of our proposal is evaluated based on the widely used OMNeT++ simulation environment. Simulation results are presented and discussed according to different sampling rates and traffic loads for specific scenarios requirements.
{"title":"Two-Layered Wireless Sensor Networks for Warehouses and Supermarkets","authors":"Zhi Zhang, Zhibo Pang, Jun Chen, Qiang Chen, H. Tenhunen, Li-Rong Zheng, Xiaolang Yan","doi":"10.1109/UBICOMM.2009.16","DOIUrl":"https://doi.org/10.1109/UBICOMM.2009.16","url":null,"abstract":"The rapid development of wireless sensor network and RFID technologies offers a wide range of novel applications and services. In this paper, we present a two-layered wireless network for warehouses and supermarkets to monitor goods storage and sale, and assist for quality management and market analysis. The hierarchical architecture uses IEEE 802.15.4a impulse ultra-wideband radio (IR-UWB) communication protocol between slave sensor nodes and master sensor nodes, and IEEE 802.11b/g between master sensor nodes and server. The performance of our proposal is evaluated based on the widely used OMNeT++ simulation environment. Simulation results are presented and discussed according to different sampling rates and traffic loads for specific scenarios requirements.","PeriodicalId":150024,"journal":{"name":"2009 Third International Conference on Mobile Ubiquitous Computing, Systems, Services and Technologies","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128917535","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}
An ant-based routing algorithm is a class of ant colony optimization algorithms which are inspired by the behavior of ants in nature. An efficient ant-based routing algorithm (EAR) for mobile ad-hoc networks has been proposed in order to support multi-path routes and to reduce overheads by managing ants efficiently. In this paper, the performances of EAR and AntHocNet are analyzed to see how these algorithms perform when transmission rate increases. The simulation results show that EAR provides less overhead, resulting faster end-to-end delivery of data as the transmission rate increases and node mobility increases.
{"title":"Effect of Transmission Rates on the Performance of Ant-Based Routing Algorithms for MANETs","authors":"Myungjun Oh, Ngo Huu Dung, Miae Woo","doi":"10.1109/UBICOMM.2009.53","DOIUrl":"https://doi.org/10.1109/UBICOMM.2009.53","url":null,"abstract":"An ant-based routing algorithm is a class of ant colony optimization algorithms which are inspired by the behavior of ants in nature. An efficient ant-based routing algorithm (EAR) for mobile ad-hoc networks has been proposed in order to support multi-path routes and to reduce overheads by managing ants efficiently. In this paper, the performances of EAR and AntHocNet are analyzed to see how these algorithms perform when transmission rate increases. The simulation results show that EAR provides less overhead, resulting faster end-to-end delivery of data as the transmission rate increases and node mobility increases.","PeriodicalId":150024,"journal":{"name":"2009 Third International Conference on Mobile Ubiquitous Computing, Systems, Services and Technologies","volume":"93 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120864043","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}
Pablo A. Pérez-Martínez, A. Solanas, A. Martínez-Ballesté
Mobile devices able to locate themselves such as mobile phones and PDAs are virtually everywhere, and they are expected to gain more importance in the near future. Their ability to determine locations opens the door to a new bunch of services: the so-called location-based services (LBS). The commercial sector will highly benefit from LBS. However, they are not without a cost — privacy. In this article we present a (trusted third party)-free, distributed, collaborative method to preserve the location privacy of LBS users.
{"title":"Location Privacy Through Users' Collaboration: A Distributed Pseudonymizer","authors":"Pablo A. Pérez-Martínez, A. Solanas, A. Martínez-Ballesté","doi":"10.1109/UBICOMM.2009.60","DOIUrl":"https://doi.org/10.1109/UBICOMM.2009.60","url":null,"abstract":"Mobile devices able to locate themselves such as mobile phones and PDAs are virtually everywhere, and they are expected to gain more importance in the near future. Their ability to determine locations opens the door to a new bunch of services: the so-called location-based services (LBS). The commercial sector will highly benefit from LBS. However, they are not without a cost — privacy. In this article we present a (trusted third party)-free, distributed, collaborative method to preserve the location privacy of LBS users.","PeriodicalId":150024,"journal":{"name":"2009 Third International Conference on Mobile Ubiquitous Computing, Systems, Services and Technologies","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125478587","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}
Seong-Hyun Jang, Seung-Han Baik, Yeong-Sam Kim, J. Chong
In this paper, we propose a new robust packet detection and frequency offset compensation structure for IEEE 802.15.4a chirp spread spectrum (CSS) which is a standard for wireless personal area network (WPAN). The proposed structure takes benefits of both cross- and auto-correlation. Cross-correlation is useful to remove additional side band noise in the CSS system and to find sharp peaks among filtered output values. In addition, we use the auto-correlation in order to suppress the effect of frequency offset and the initial channel phase. Simulation results show that the proposed procedure is robust to the frequency offset, and can detect the presence of a signal in very low signal to noise ratio (SNR).
{"title":"Robust and Accurate Packet Detection and Frequency Offset Compensation for CSS System","authors":"Seong-Hyun Jang, Seung-Han Baik, Yeong-Sam Kim, J. Chong","doi":"10.1109/UBICOMM.2009.42","DOIUrl":"https://doi.org/10.1109/UBICOMM.2009.42","url":null,"abstract":"In this paper, we propose a new robust packet detection and frequency offset compensation structure for IEEE 802.15.4a chirp spread spectrum (CSS) which is a standard for wireless personal area network (WPAN). The proposed structure takes benefits of both cross- and auto-correlation. Cross-correlation is useful to remove additional side band noise in the CSS system and to find sharp peaks among filtered output values. In addition, we use the auto-correlation in order to suppress the effect of frequency offset and the initial channel phase. Simulation results show that the proposed procedure is robust to the frequency offset, and can detect the presence of a signal in very low signal to noise ratio (SNR).","PeriodicalId":150024,"journal":{"name":"2009 Third International Conference on Mobile Ubiquitous Computing, Systems, Services and Technologies","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127843329","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}
The automatic sketch map generation technique proposed in this study can provide the optimum additional information for various services by automatically changing the conventional information presented by a type of digital map into the type of sketch map that improves its understanding and visual appearance. Also, the proposed technique can be applied to not only mobile based services but also web based services and that makes possible to apply it to various geographic information services.
{"title":"Electronic Sketch Map Services for Mobile Applications","authors":"J. Jeon, Ki Jeong Lee","doi":"10.1109/UBICOMM.2009.35","DOIUrl":"https://doi.org/10.1109/UBICOMM.2009.35","url":null,"abstract":"The automatic sketch map generation technique proposed in this study can provide the optimum additional information for various services by automatically changing the conventional information presented by a type of digital map into the type of sketch map that improves its understanding and visual appearance. Also, the proposed technique can be applied to not only mobile based services but also web based services and that makes possible to apply it to various geographic information services.","PeriodicalId":150024,"journal":{"name":"2009 Third International Conference on Mobile Ubiquitous Computing, Systems, Services and Technologies","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133133453","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：