发布求助
文献互助 智能选刊 最新文献

2014 IFIP Wireless Days (WD)最新文献

筛选
英文 中文
Analysis of bit error probability for imperfect timing synchronization in virtual MISO networks 虚拟MISO网络不完全定时同步的误码概率分析
2014 IFIP Wireless Days (WD) Pub Date : 2014-11-01 DOI: 10.1109/WD.2014.7020806
Muddassar Hussain, Syed Ali Hassan
{"title":"Analysis of bit error probability for imperfect timing synchronization in virtual MISO networks","authors":"Muddassar Hussain, Syed Ali Hassan","doi":"10.1109/WD.2014.7020806","DOIUrl":"https://doi.org/10.1109/WD.2014.7020806","url":null,"abstract":"This paper considers a virtual multiple-input single-output (VMISO) network, where spatially separated single-antenna radios cooperatively transmit the same data to a destination. The existing works for the VMISO system assume perfect synchronization between the nodes. However, in this paper, we investigate the effects of imperfect timing synchronization on the performance of this network. For that purpose, we develop a statistical model for the timing errors and derive the expressions for the bit error probability (BEP) using this model. The results indicate that the BEP performance is degraded due to imperfect timing synchronization and the BEP is dependent upon the number of radios per cluster, signal-to-noise ratio (SNR) and the distance disparities between the nodes.","PeriodicalId":311349,"journal":{"name":"2014 IFIP Wireless Days (WD)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127890227","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: 5
QoS support for bursty traffic in noisy channel via periodic reservations 通过周期性保留对噪声信道中突发业务的QoS支持
2014 IFIP Wireless Days (WD) Pub Date : 2014-11-01 DOI: 10.1109/WD.2014.7020808
A. Ivanov, E. Khorov, A. Lyakhov
{"title":"QoS support for bursty traffic in noisy channel via periodic reservations","authors":"A. Ivanov, E. Khorov, A. Lyakhov","doi":"10.1109/WD.2014.7020808","DOIUrl":"https://doi.org/10.1109/WD.2014.7020808","url":null,"abstract":"The growth of the number of devices working at the same area, overlapping networks and multihop data transmission degrade the efficiency of contention based channel access. A number of deterministic channel access methods introduced in recent Wi-Fi standards allow to reserve a set of periodical time intervals, during which a single station can access channel without contention. Providing collision free transmission, these methods are favourable for real-time multimedia traffic which demands high quality of service (QoS). However, QoS provisioning for multimedia transmission is significantly complicated by the bursty nature of multimedia traffic and random noise inherent to wireless channels. In this paper, we propose an analytical model of multimedia transmission via periodic reservations considering both multimedia traffic bursty nature and random noise. The model can be used to find reservation parameters which allow to meet QoS requirements while transmitting multimedia data.","PeriodicalId":311349,"journal":{"name":"2014 IFIP Wireless Days (WD)","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134116354","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
Using a token approach for the MAC layer of linear sensor networks: Impact of the node position on the packet delivery 线性传感器网络MAC层的令牌方法:节点位置对数据包传输的影响
2014 IFIP Wireless Days (WD) Pub Date : 2014-11-01 DOI: 10.1109/WD.2014.7020837
E. H. M. Ndoye, F. Jacquet, M. Misson, I. Niang
{"title":"Using a token approach for the MAC layer of linear sensor networks: Impact of the node position on the packet delivery","authors":"E. H. M. Ndoye, F. Jacquet, M. Misson, I. Niang","doi":"10.1109/WD.2014.7020837","DOIUrl":"https://doi.org/10.1109/WD.2014.7020837","url":null,"abstract":"Wireless sensor networks (WSNs) consist of a large number of sensor nodes which communicate via wireless links for monitoring applications. In several applications, such as the monitoring of pipelines or roads, the network topology is linear. This type of WSN is called linear sensor network (LSN). Our goal is to improve the behavior of a MAC protocol for LSNs, by using a token approach. As usual, the possession of the token grants the node permission to transmit on the medium during a given amount of time. The payload of the token is used to propagate network parameters such as delay between tokens, sleep and wakeup calendar. In this paper, we study the behavior of this MAC protocol and we evaluate the impact of the node position on the packet delivery for two types of LSNs.","PeriodicalId":311349,"journal":{"name":"2014 IFIP Wireless Days (WD)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129643343","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
Towards the enhancement of UAV video transmission with motion intensity awareness 以运动强度感知增强无人机视频传输
2014 IFIP Wireless Days (WD) Pub Date : 2014-11-01 DOI: 10.1109/WD.2014.7020820
R. Immich, E. Cerqueira, M. Curado
{"title":"Towards the enhancement of UAV video transmission with motion intensity awareness","authors":"R. Immich, E. Cerqueira, M. Curado","doi":"10.1109/WD.2014.7020820","DOIUrl":"https://doi.org/10.1109/WD.2014.7020820","url":null,"abstract":"The use of video-equipped Unmanned Aerial Vehicles (UAV) has been increasing recently, along with the number of available applications for military and civilian employment. This unveils the need for an adaptive video-aware mechanism capable of overcoming a number of challenges related to the scarce network resources, device movement, as well as high error rates, to ensure a good video quality delivery. Forward Error Correction (FEC) techniques can be tailored to provide adaptive protection with Quality of Experience (QoE) assurance over error-prone and high-mobility networks. Besides that, unique characteristics of each video sequence, such as the spatial complexity and the temporal intensity, strongly affect how the QoE will be impacted by the packet loss. This paper proposes an adaptive motion intensity and video-aware FEC mechanism with the aid of Fuzzy logic to safeguard UAV real-time video transmissions against packet loss, providing a better user experience, while saving resources. The advantages and drawbacks of the proposed mechanism in comparison to the related work are evidenced through experiments and assessed by using QoE metrics.","PeriodicalId":311349,"journal":{"name":"2014 IFIP Wireless Days (WD)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127172755","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: 11
Connectivity management to support reliable communication on Cognitive vehicular networks 在认知车辆网络上支持可靠通信的连接管理
2014 IFIP Wireless Days (WD) Pub Date : 2014-11-01 DOI: 10.1109/WD.2014.7020839
Cláudio Silva, E. Cerqueira, M. N. Lima
{"title":"Connectivity management to support reliable communication on Cognitive vehicular networks","authors":"Cláudio Silva, E. Cerqueira, M. N. Lima","doi":"10.1109/WD.2014.7020839","DOIUrl":"https://doi.org/10.1109/WD.2014.7020839","url":null,"abstract":"Applications related to driving safety, mobile health, and entertainment present communication constraints, requiring reliability in data delivery. Ensuring reliability in highly dynamic vehicular networks is a demanding task due to fast variations on connectivity and network conditions. This paper presents MOCA, a Mechanism for cOnnectivity management on Cognitive vehiculAr networks. MOCA benefits from the flexibility provided by the cognitive radio technology, accessing opportunistically the frequency spectrum. Also, it manages the use of frequency channels based on information from vehicles, such as speed and driving direction; and on the application requirements. The proposed mechanism is rigorously tested on urban scenarios and compared to one representative approach from the literature. Evaluation results demonstrate that MOCA improves significantly connectivity in vehicular cognitive networks and outperforms the compared approach on throughput and jitter.","PeriodicalId":311349,"journal":{"name":"2014 IFIP Wireless Days (WD)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127391439","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: 5
The failure of CSMA in emerging wireless network scenarios CSMA在新兴无线网络场景中的失效
2014 IFIP Wireless Days (WD) Pub Date : 2014-11-01 DOI: 10.1109/WD.2014.7020830
Emma Fitzgerald, B. Landfeldt
{"title":"The failure of CSMA in emerging wireless network scenarios","authors":"Emma Fitzgerald, B. Landfeldt","doi":"10.1109/WD.2014.7020830","DOIUrl":"https://doi.org/10.1109/WD.2014.7020830","url":null,"abstract":"The current family of 802.11 protocols are based on the Carrier Sense Multiple Access (CSMA) mechanism which is a simple and robust means of sharing a channel. However, two current trends in wireless networks point towards a situation where CSMA fails to perform better than pure random access solutions such as ALOHA. The first trend is the ever increasing raw data rate in each generation of 802.11 which is set to continue with the current 802.11ax standardisation. The second is the move towards smaller frames as end users increasingly use mobile devices instead of desktop computers. We show that as the ratio of propagation delay to packet transmission time increases, the performance of CSMA degrades correspondingly, to the point where ALOHA outperforms CSMA.","PeriodicalId":311349,"journal":{"name":"2014 IFIP Wireless Days (WD)","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125918640","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
A strategy for opportunistic cognitive channel allocation in wireless Internet of Things 无线物联网中机会认知信道分配策略
2014 IFIP Wireless Days (WD) Pub Date : 2014-11-01 DOI: 10.1109/WD.2014.7020850
Roni F. Shigueta, M. Fonseca, A. C. Viana, A. Ziviani, Anelise Munaretto
{"title":"A strategy for opportunistic cognitive channel allocation in wireless Internet of Things","authors":"Roni F. Shigueta, M. Fonseca, A. C. Viana, A. Ziviani, Anelise Munaretto","doi":"10.1109/WD.2014.7020850","DOIUrl":"https://doi.org/10.1109/WD.2014.7020850","url":null,"abstract":"This article presents a strategy for channel assignment in Internet of Things (IoT) networks. The proposed strategy uses opportunistic spectrum access via cognitive radios. The originality of this work resides in the use of traffic history to guide the channel allocation in a distributed manner. The channel assignment algorithm mitigates the interference in links with higher traffic history. Our performance evaluation shows that using the historical network traffic as a decision criterion leads to better results when compared with the simple use of the network topology as a criterion.","PeriodicalId":311349,"journal":{"name":"2014 IFIP Wireless Days (WD)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125946054","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: 14
Accurate 2-D localization of RFID tags using antenna transmission power control 利用天线发射功率控制RFID标签的精确二维定位
2014 IFIP Wireless Days (WD) Pub Date : 2014-11-01 DOI: 10.1109/WD.2014.7020802
J. Akré, Xiaofei Zhang, Sébastien Baey, B. Kervella, A. Fladenmuller, Mario Antonio Zancanaro, M. Fonseca
{"title":"Accurate 2-D localization of RFID tags using antenna transmission power control","authors":"J. Akré, Xiaofei Zhang, Sébastien Baey, B. Kervella, A. Fladenmuller, Mario Antonio Zancanaro, M. Fonseca","doi":"10.1109/WD.2014.7020802","DOIUrl":"https://doi.org/10.1109/WD.2014.7020802","url":null,"abstract":"Localization of tagged objects with sufficient precision is a main issue in many industrial applications. In this paper, a new approach is proposed for the localization of UHF passive tags simply using the environment learning approach. This method uses, for a given passive tag located in a 2-D space, an aggregate function of the Received Signal Strength Indicator (RSSI) for all the possible RFID reader's transmission powers. Based on these measurements, we define a location signature, which is compared with those of other tags located at known positions in the neighborhood. We then implement a method based on the k-Nearest Neighbor (k-NN) algorithm to estimate the position of the target tag. Using a realistic test case involving seventy tags and four antennas, we show a very significant improvement of the localization accuracy in comparison with the results obtained using a single RSSI value.","PeriodicalId":311349,"journal":{"name":"2014 IFIP Wireless Days (WD)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125700095","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
An efficient partial data aggregation scheme in WSNs 一种有效的无线传感器网络部分数据聚合方案
2014 IFIP Wireless Days (WD) Pub Date : 2014-11-01 DOI: 10.1109/WD.2014.7020845
Imane Horiya Brahmi, S. Djahel, D. Magoni, John Murphy
{"title":"An efficient partial data aggregation scheme in WSNs","authors":"Imane Horiya Brahmi, S. Djahel, D. Magoni, John Murphy","doi":"10.1109/WD.2014.7020845","DOIUrl":"https://doi.org/10.1109/WD.2014.7020845","url":null,"abstract":"Highly accurate event detection makes Wireless Sensor Networks popular for real time monitoring applications. Wireless sensor systems that monitor physical and environmental conditions are expected to be deployed with high density, a situation which leads to spatial correlations and redundancy of the collected data. Eliminating these redundancies extends the network lifetime by reducing energy consumption and enhances the velocity of transmitting emergency and periodic messages. In this work, we focus on the scenario where sensors are grouped into clusters. Each Cluster Head (CH) receives samplings from its Cluster Members (CMs), and decides when it should stop sampling, and starts transmitting the resulting packet from the aggregation process in order to reduce the end-to-end delay and ensure the accuracy of the transmitted data. To this end, we propose a cluster based aggregation scheme which determines, at the CH level, the best timing for achieving a short delay, and provides an efficient buffer management strategy for maintaining low energy consumption. Evaluation results based on simulations show that our scheme achieves a good trade-off between energy consumption and end-to-end delay.","PeriodicalId":311349,"journal":{"name":"2014 IFIP Wireless Days (WD)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114450062","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
Medium access control protocol for Hybrid Radio-over-Fiber Wireless Sensors Networks 混合光纤无线传感器网络的介质访问控制协议
2014 IFIP Wireless Days (WD) Pub Date : 2014-11-01 DOI: 10.1109/WD.2014.7020835
T. Andrade, L. Villas, N. Fonseca
{"title":"Medium access control protocol for Hybrid Radio-over-Fiber Wireless Sensors Networks","authors":"T. Andrade, L. Villas, N. Fonseca","doi":"10.1109/WD.2014.7020835","DOIUrl":"https://doi.org/10.1109/WD.2014.7020835","url":null,"abstract":"This paper introduces the Dynamic HMARS (D-HMARS) protocol designed for the Hybrid Radio-over-Fiber Wireless Sensors Network (WSN-RoF) architecture, in which multiple clusters of wireless sensor nodes are connected to a base station via an optical link using Radio-over-Fiber (RoF) technology. The D-HMARS protocol was designed to avoid the problem of occurrence of false positive in the Clear Channel Assessment (CCA) mechanism. Simulation results show that the D-HMARS protocol increases the delivery ratio as well as the effective throughput of the network.","PeriodicalId":311349,"journal":{"name":"2014 IFIP Wireless Days (WD)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114486096","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
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