发布求助
文献互助 智能选刊 最新文献

2007 2nd International Symposium on Wireless Pervasive Computing最新文献

筛选
英文 中文
SEA-MAC: A Simple Energy Aware MAC Protocol for Wireless Sensor Networks for Environmental Monitoring Applications SEA-MAC:用于环境监测应用的无线传感器网络的简单能量感知MAC协议
2007 2nd International Symposium on Wireless Pervasive Computing Pub Date : 2007-04-16 DOI: 10.1109/ISWPC.2007.342611
M. Erazo, Y. Qian
{"title":"SEA-MAC: A Simple Energy Aware MAC Protocol for Wireless Sensor Networks for Environmental Monitoring Applications","authors":"M. Erazo, Y. Qian","doi":"10.1109/ISWPC.2007.342611","DOIUrl":"https://doi.org/10.1109/ISWPC.2007.342611","url":null,"abstract":"In this paper, we propose SEA-MAC, a new energy aware medium access control (MAC) protocol for wireless sensor networks for environmental monitoring applications. The proposed MAC scheme is specifically designed for wireless sensor networks which have periodic traffic. In our MAC scheme, the duty cycle is shortened by making nodes wake up only when an environmental sample is taken. Also in SEA-MAC, only the base station can start and maintain synchronization. Consequently, the synchronization is unique in the whole network. The proposed SEA-MAC protocol is tested using simulations and real measurements on the implementations using mica2 motes","PeriodicalId":403213,"journal":{"name":"2007 2nd International Symposium on Wireless Pervasive Computing","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126421838","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: 22
New metrics to evaluate mobility models properties 评估迁移模型属性的新指标
2007 2nd International Symposium on Wireless Pervasive Computing Pub Date : 2007-04-16 DOI: 10.1109/ISWPC.2007.342624
Fabrice Théoleyre, R. Tout, F. Valois
{"title":"New metrics to evaluate mobility models properties","authors":"Fabrice Théoleyre, R. Tout, F. Valois","doi":"10.1109/ISWPC.2007.342624","DOIUrl":"https://doi.org/10.1109/ISWPC.2007.342624","url":null,"abstract":"Mobility models allow to mimic the behavior of mobile nodes when MANET performances are evaluated via simulations. Nevertheless, simulations results are strongly correlated with the mobility model. In this work, we introduce new metrics in order to characterize any mobility model. These metrics reflect the nodes distribution, the local topology changes, the repetitive behavior of a model, etc. They allow in consequence to characterize mobility models, and particularly to introduce a taxonomy based on objective and quantitative criteria. Using these metrics, we characterize some individual and one group mobility models.","PeriodicalId":403213,"journal":{"name":"2007 2nd International Symposium on Wireless Pervasive Computing","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126724828","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: 32
Adding Angle of Arrival Modality to Basic RSS Location Management Techniques 在基本RSS位置管理技术中增加到达角度模态
2007 2nd International Symposium on Wireless Pervasive Computing Pub Date : 2007-04-16 DOI: 10.1109/ISWPC.2007.342648
E. Elnahrawy, John Austen-Francisco, R. Martin
{"title":"Adding Angle of Arrival Modality to Basic RSS Location Management Techniques","authors":"E. Elnahrawy, John Austen-Francisco, R. Martin","doi":"10.1109/ISWPC.2007.342648","DOIUrl":"https://doi.org/10.1109/ISWPC.2007.342648","url":null,"abstract":"In this paper, we describe a radio-based localization approach that is based on the use of rotating directional antennas and a Bayesian network that combines both angle-of-arrival (AoA) and received signal strength (RSS). After describing our network, we extensively characterize the accuracy of our approach under a variety of measured signal distortion types. Next, using a combination of synthetic and trace-driven experiments, we show the impact of different signal distortions on localization performance. We found the use of directional antennas was effective at averaging out multi-path effects in indoor environments, which helped reduce the amount of training data required compared to previous approaches.","PeriodicalId":403213,"journal":{"name":"2007 2nd International Symposium on Wireless Pervasive Computing","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126311148","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: 53
A Short-burst Synchronization Method for Narrowband Wireless Communication Systems 窄带无线通信系统的短突发同步方法
2007 2nd International Symposium on Wireless Pervasive Computing Pub Date : 2007-04-16 DOI: 10.1109/ISWPC.2007.342677
T. Fujita, D. Uchida, Y. Fujino, O. Kagami, K. Watanabe
{"title":"A Short-burst Synchronization Method for Narrowband Wireless Communication Systems","authors":"T. Fujita, D. Uchida, Y. Fujino, O. Kagami, K. Watanabe","doi":"10.1109/ISWPC.2007.342677","DOIUrl":"https://doi.org/10.1109/ISWPC.2007.342677","url":null,"abstract":"This paper proposes a new burst synchronization method that improves transmission efficiency. This method suits narrowband wireless communications systems, whose traffic is dominated by short packets such as radio-frequency identification (RF-ID) information. In these systems, overhead symbols such as preamble and pilot symbols degrade the transmission efficiency. The proposed method eliminates preamble symbols and reserves pilot symbols for accurate burst synchronization. The proposed coded pilots enable frame acquisition, carrier recovery, and phase tracking to be achieved with coherent detection. Computer simulation results show that the proposed method achieves up to 26% better transmission efficiency, while achieving better packet error-rate performance than conventional methods","PeriodicalId":403213,"journal":{"name":"2007 2nd International Symposium on Wireless Pervasive Computing","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132724005","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: 4
A Method for the Analysis of the Impact of UWB Interference on the Performance of UMTS Networks 一种UWB干扰对UMTS网络性能影响的分析方法
2007 2nd International Symposium on Wireless Pervasive Computing Pub Date : 2007-04-16 DOI: 10.1109/ISWPC.2007.342583
G. Nader, A. Annamalai
{"title":"A Method for the Analysis of the Impact of UWB Interference on the Performance of UMTS Networks","authors":"G. Nader, A. Annamalai","doi":"10.1109/ISWPC.2007.342583","DOIUrl":"https://doi.org/10.1109/ISWPC.2007.342583","url":null,"abstract":"This paper discusses a method for analyzing the potential interference that ultra-wideband (UWB) devices can cause on UMTS networks. We discuss the UWB-UMTS coexistence problem at the link level, showing the degradation on maximum cell range due to UWB interference. Further, we discuss the importance of proper modeling of the mobility and randomness associated with UWB and UMTS, and propose a system level simulation algorithm to simulate the behavior of a UMTS network in the presence of UWB interference, accounting for the multiple elements that determine and influence its performance. We present simulation results for a theoretical UMTS network, to illustrate its performance variation as the density of UWB interference sources changes","PeriodicalId":403213,"journal":{"name":"2007 2nd International Symposium on Wireless Pervasive Computing","volume":"130 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132801589","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: 4
Enhancing Performance of Space-Time Parameter Estimation in DS-CDMA Arrays 提高DS-CDMA阵列空时参数估计性能
2007 2nd International Symposium on Wireless Pervasive Computing Pub Date : 2007-04-16 DOI: 10.1109/ISWPC.2007.342655
R. Wu, T. Ristaniemi
{"title":"Enhancing Performance of Space-Time Parameter Estimation in DS-CDMA Arrays","authors":"R. Wu, T. Ristaniemi","doi":"10.1109/ISWPC.2007.342655","DOIUrl":"https://doi.org/10.1109/ISWPC.2007.342655","url":null,"abstract":"A large number of signal processing researches are concerning with estimating unknown signal parameters from antenna arrays. In this paper, the parameter estimation problem is focused on time delay and direction-of-arrival (DOA) estimation, here called two-dimensional code acquisition. Multiple signal classification (MUSIC) is addressed to perform the two-dimensional code acquisition in direct-sequence code division multiple access (DS-CDMA) arrays, and the general performance analyses of MUSIC are given. Based on the further analyzed eigenvalues, the derived bias of MUSIC discloses that the performance of MUSIC for two-dimensional code acquisition can be improved by the increasing length of the space-time response vector.","PeriodicalId":403213,"journal":{"name":"2007 2nd International Symposium on Wireless Pervasive Computing","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129326644","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
Joint TOA and AOA Estimation of UWB Signal Using Time Domain Smoothing 基于时域平滑的UWB信号TOA和AOA联合估计
2007 2nd International Symposium on Wireless Pervasive Computing Pub Date : 2007-04-16 DOI: 10.1109/ISWPC.2007.342585
N. Iwakiri, T. Kobayashi
{"title":"Joint TOA and AOA Estimation of UWB Signal Using Time Domain Smoothing","authors":"N. Iwakiri, T. Kobayashi","doi":"10.1109/ISWPC.2007.342585","DOIUrl":"https://doi.org/10.1109/ISWPC.2007.342585","url":null,"abstract":"This paper presents an ultrawide-band (UWB) channel sounding scheme with a technique for estimating time of arrival (TOA) and angle of arrival (AOA) using an antenna array time domain smoothing. The smoothing averages over the time domain UWB signals of several immediate neighbor elements of the array, which is expected to be similar to the increasing number of snapshots as well as the mitigation of the TOA estimation error. After the TOA estimation using the time domain smoothing UWB signal, one time domain sample corresponding to the strongest TOA was eliminated. Then fast Fourier transform (FFT) was performed and AOA was estimated for every frequency point. These processes were iterated after selecting the next strongest TOA until all the available TOAs were eliminated. The result of anechoic chamber tests using two sources indicated that the resolution of TOA was more than 1 ns, that of AOA was more than 3deg for half wavelength element spacing.","PeriodicalId":403213,"journal":{"name":"2007 2nd International Symposium on Wireless Pervasive Computing","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132335176","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: 7
Performance Analysis of Three Gated Service Polling Scheme on Wireless Network 无线网络上三门控服务轮询方案的性能分析
2007 2nd International Symposium on Wireless Pervasive Computing Pub Date : 2007-04-16 DOI: 10.1109/ISWPC.2007.342652
Yan Li, Guangxi Zhu
{"title":"Performance Analysis of Three Gated Service Polling Scheme on Wireless Network","authors":"Yan Li, Guangxi Zhu","doi":"10.1109/ISWPC.2007.342652","DOIUrl":"https://doi.org/10.1109/ISWPC.2007.342652","url":null,"abstract":"Since random access technology can not guarantee quality of service (QoS) requirements in general, the centralized polling-based access mechanism, such as point coordination function in IEEE 802.11, is provided in wireless network to support QoS related services. It is proved that the optimal polling scheme for symmetric systems (same traffic offered to all queues) is exhaustive polling (Liu et al., 1992). This paper proposes three gated service (3-gated) polling scheme on the basis of polling scheme. It is validated that the performance of the novel scheme is close to that of exhaustive polling by the theoretical analysis and simulation. It also shows 3-gated polling is more effective and can avoid unfairness which is inevitable for the exhaustive polling","PeriodicalId":403213,"journal":{"name":"2007 2nd International Symposium on Wireless Pervasive Computing","volume":"08 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122214027","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: 8
DA-MLAR-ODTP: Directional Antenna Multipath Location Aided Routing with On Demand Transmission Power 按需传输功率的定向天线多径定位辅助路由
2007 2nd International Symposium on Wireless Pervasive Computing Pub Date : 2007-04-16 DOI: 10.1109/ISWPC.2007.342576
S. Gajurel, B. Malakooti, Limin Wang
{"title":"DA-MLAR-ODTP: Directional Antenna Multipath Location Aided Routing with On Demand Transmission Power","authors":"S. Gajurel, B. Malakooti, Limin Wang","doi":"10.1109/ISWPC.2007.342576","DOIUrl":"https://doi.org/10.1109/ISWPC.2007.342576","url":null,"abstract":"This paper studies a directional antenna multi-path location aided routing (DA-MLAR) scheme with on demand transmission power support. The targeted application contexts include communications in space networks, where efficient and reliable packet delivery is very challenging due to the high bit error rate, intermittent connectivity, limited bandwidth and energy. This research enhances our DA-MLAR protocol with on demand transmission power (ODTP) capability. By using different transmission power based on the calculated distance from the current sender node to the destination node or the next hop node, DA-MLAR-ODTP gets the best of the directional and omni-directional modes. Compared to DA-MLAR, on demand transmission power mode further improves the packet delivery ratio by up to 37% and dwindles end-to-end delay by up to 57% with more or less the same amount of energy consumption. Simulation experiments show that this is a promising technique for more reliable communications in MANET with energy and other constraints","PeriodicalId":403213,"journal":{"name":"2007 2nd International Symposium on Wireless Pervasive Computing","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124174224","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: 10
Near-Optimal Multiuser Detection in Asynchronous MC-CDMA via the Ant Colony Approach 基于蚁群算法的异步MC-CDMA近最优多用户检测
2007 2nd International Symposium on Wireless Pervasive Computing Pub Date : 2007-04-16 DOI: 10.1109/ISWPC.2007.342614
S. Hijazi, B. Natarajan
{"title":"Near-Optimal Multiuser Detection in Asynchronous MC-CDMA via the Ant Colony Approach","authors":"S. Hijazi, B. Natarajan","doi":"10.1109/ISWPC.2007.342614","DOIUrl":"https://doi.org/10.1109/ISWPC.2007.342614","url":null,"abstract":"In this paper, we present a novel multiuser detection (MUD) structure for asynchronous multi-carrier code division multiple access (MC-CDMA) systems. Previously proposed MUDs assume a desired user while performing joint demodulation. As a result, multiple runs of the demodulation process become necessary to obtain all users' information. In this paper, we present a MUD structure that detects all users' symbols simultaneously in one run. The proposed structure is based on extending the integration time at the receiver to capture the energy scattered in two consecutive symbol durations. We derive the optimal receiver structure and implement it using a low-complexity ant colony optimization (ACO) approach. The proposed ACO-MUD is based on the cooperative foraging strategy of real ants and is shown to converge to the optimal MUD BER performance in relatively few iterations with a 97.7% saving in complexity over an exhaustive search technique","PeriodicalId":403213,"journal":{"name":"2007 2nd International Symposium on Wireless Pervasive Computing","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123794926","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: 9
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信