2006 1st International Symposium on Wireless Pervasive Computing最新文献_第4页

Impact of receive correlation on the performance of V-BLAST system 接收相关性对V-BLAST系统性能的影响

2006 1st International Symposium on Wireless Pervasive Computing Pub Date : 2006-04-10 DOI: 10.1109/ISWPC.2006.1613603

Haitao Liu, Hanbing Zhou, Daoben Li

引用次数: 3

Effects of digital filtering technique in reducing the effects of clipping of an enhanced orthogonal frequency division multiplexing system 数字滤波技术在减少增强型正交频分复用系统的削波影响中的作用

2006 1st International Symposium on Wireless Pervasive Computing Pub Date : 2006-04-10 DOI: 10.1109/ISWPC.2006.1613567

W. H. Wan Hassan, S. Khatun

{"title":"Effects of digital filtering technique in reducing the effects of clipping of an enhanced orthogonal frequency division multiplexing system","authors":"W. H. Wan Hassan, S. Khatun","doi":"10.1109/ISWPC.2006.1613567","DOIUrl":"https://doi.org/10.1109/ISWPC.2006.1613567","url":null,"abstract":"Despite of the many advantages of OFDM, it has two main drawbacks which are high peak to average power ratio (PAPR) and synchronization problem. High PAPR causes saturation in power amplifiers, leading to intermodulation products among the sub carriers and disturbing out of band energy. Therefore, it is desirable to reduce the PAPR by means of PAPR reduction schemes. However, it caused the degradation of BER and enhanced the growth of out of band radiation which has led to the degradation of OFDM overall performance. In this paper, OFDM system with an enhanced clipping technique has been proposed, the effects of clipping have been analyzed and the system is evaluated by integrating with its significant features including convolutional forward error control coding, oversampled inverse fast Fourier transform (IFFT) and digital filtering technique in order to minimize the effects of clipping. It is shown that the bit error rate (BER) of the clipped OFDM signal is improved, the PAPR is further reduced and the effect of out of band radiation is minimized. Besides, other effects of the filtering technique are also analyzed in order to optimize the overall performance of our proposed system.","PeriodicalId":145728,"journal":{"name":"2006 1st International Symposium on Wireless Pervasive Computing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2006-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113986234","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

Energy Efficient Security Services for Limited Wireless Devices 有限无线设备的节能安全服务

2006 1st International Symposium on Wireless Pervasive Computing Pub Date : 2006-04-10 DOI: 10.1109/ISWPC.2006.1613636

P. Keeratiwintakorn, P. Krishnamurthy

引用次数: 21

Performance evaluation of a TOA-based trilateration method to locate terminals in WLAN 一种基于toa的无线局域网终端定位方法的性能评估

2006 1st International Symposium on Wireless Pervasive Computing Pub Date : 2006-04-10 DOI: 10.1109/ISWPC.2006.1613598

F. Izquierdo, M. Ciurana, F. Barceló, J. Paradells, E. Zola

引用次数: 95

Using MPLS-based dynamic tunnel for location control and QoS management in wireless network 利用基于mpls的动态隧道进行无线网络的位置控制和QoS管理

2006 1st International Symposium on Wireless Pervasive Computing Pub Date : 2006-04-10 DOI: 10.1109/ISWPC.2006.1613614

Nin-Jain Shin, T. Wu, Wei-Ming Chen, H. Chao

引用次数: 0

Optimality measures for coverage in 3D wireless sensor networks 三维无线传感器网络覆盖的最优度量

2006 1st International Symposium on Wireless Pervasive Computing Pub Date : 2006-04-10 DOI: 10.1109/ISWPC.2006.1613653

M. Watfa, S. Commuri

引用次数: 6

Adapting connectionless approach to mobile ad hoc networks in obstacle environment 障碍物环境下移动自组网的无连接适应方法

2006 1st International Symposium on Wireless Pervasive Computing Pub Date : 2006-04-10 DOI: 10.1109/ISWPC.2006.1613597

Y. H. Ho, A. H. Ho, K. Hua, T. Do

{"title":"Adapting connectionless approach to mobile ad hoc networks in obstacle environment","authors":"Y. H. Ho, A. H. Ho, K. Hua, T. Do","doi":"10.1109/ISWPC.2006.1613597","DOIUrl":"https://doi.org/10.1109/ISWPC.2006.1613597","url":null,"abstract":"Most of today's communication techniques for mobile ad hoc networks take a connection-oriented approach. Mobile nodes need to discover routes and establish a connection before they can communicate. This strategy is not robust as it cannot adapt to frequent unpredictable topology changes due to high mobility. Constant reconnections incur significant overhead making these schemes unsuitable for applications such as voice and video. To address these issues, we explore a connectionless paradigm in this paper. We leverage technology such as GPS (Global Positioning System) to allow a source node to discover its general direction with respect to a destination node. Data packets are relayed along this directional path toward the destination using different intermediate nodes at different times without having to first establish a connection. Although an earlier work called connectionless approach (CLA) to mobile ad hoc network can work well in high mobility environment, it cannot be applied directly to obstacle environments because obstacle (i.e., mountains, lakes, or buildings) often block direct path between any two nodes. The contribution of this paper is to adapt CLA to obstacle environments. The proposed approach can relay data around obstacles, can quickly adapt to topology change, and can provide multiple communicating paths to the destination.","PeriodicalId":145728,"journal":{"name":"2006 1st International Symposium on Wireless Pervasive Computing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2006-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124245218","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

Efficient application of IPsec VPNs in wireless networks IPsec vpn在无线网络中的高效应用

2006 1st International Symposium on Wireless Pervasive Computing Pub Date : 2006-04-10 DOI: 10.1109/ISWPC.2006.1613619

Namhi Kang, L. Lo Iacono, C. Rulan, Younghan Kim

{"title":"Efficient application of IPsec VPNs in wireless networks","authors":"Namhi Kang, L. Lo Iacono, C. Rulan, Younghan Kim","doi":"10.1109/ISWPC.2006.1613619","DOIUrl":"https://doi.org/10.1109/ISWPC.2006.1613619","url":null,"abstract":"Modern wireless networks allow a mobile node including smart devices or sensing devices to communicate with each other regardless of the time it wishes to access and the place where it is. Moreover the current wireless network technologies are trying to offer high data rates with low error rates. This is especially important for so called field workers, who work outside a company's building or even a fixed location but have to access the corporate LAN. VPNs enable corporations to extend services to mobile employees and partners without the risk of compromising their existing security standards. A mobile VPN (MVPN) extends the VPN to mobile workers who establish an VPN tunnel over the Internet using wireless connections such as GSM, GPRS, WLAN or UMTS. The security mechanisms integrated into the VPN technology cause a considerable data size expansion which is especially in wireless networks undesirable. In this paper we present a mechanism that enables the application of header compression techniques in IPsec secured VPNs which as a result reduces data size expansion and consequently the packet-loss rate and transmission costs.","PeriodicalId":145728,"journal":{"name":"2006 1st International Symposium on Wireless Pervasive Computing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2006-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131634478","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

Mobile path loss characteristics for low base station antenna height in different forest densities 不同森林密度下低基站天线高度移动路径损耗特性

2006 1st International Symposium on Wireless Pervasive Computing Pub Date : 2006-04-10 DOI: 10.1109/ISWPC.2006.1613580

S. Phaiboon, S. Somkuarnpanit

引用次数: 13

Secure data aggregation using commitment schemes and quasi commutative functions 使用承诺方案和准交换函数的安全数据聚合

2006 1st International Symposium on Wireless Pervasive Computing Pub Date : 2006-04-10 DOI: 10.1109/ISWPC.2006.1613622

M. Raina, Subhas Ghosh, R. Patro, G. Viswanath, Chadrashekhar T Honeywell

引用次数: 7