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2017 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PACRIM)最新文献

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Energy considerations for node localization 节点定位的能量考虑
2017 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PACRIM) Pub Date : 2017-08-01 DOI: 10.1109/PACRIM.2017.8121902
Thioanh Bui, P. Xu
{"title":"Energy considerations for node localization","authors":"Thioanh Bui, P. Xu","doi":"10.1109/PACRIM.2017.8121902","DOIUrl":"https://doi.org/10.1109/PACRIM.2017.8121902","url":null,"abstract":"In wireless sensor networks, nodes are power-limited, hence, we need to save the energy of nodes to guarantee the operations of the network. In this paper, the energy consumption of nodes in the process of node location estimation is reduced by allocating the transmission power of the anchors. Based on the mathematical model of Direction of Arrival (DoA) estimation error variance as a function of Received Signal Strength (RSS), the objective function of the optimization problem of hybrid DoA/RSS measurements localization is provided. Target is required to be localized with a pre-specified accuracy metric, which is defined in two cases: to be the determinant and to be the Cramer-Rao Bound (CRB) of the Bayesian Fisher Information Matrix (B-FIM). The accuracy metric is derived for RSS-only and hybrid DoA/RSS measurements. The existence and uniqueness of the solution of the optimization problem are proved. Finally, the proposed algorithm is validated through extensive simulations.","PeriodicalId":308087,"journal":{"name":"2017 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PACRIM)","volume":"272 1-2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116847103","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
Data piece elimination technique for interruption time reduction on hybrid broadcasting environments 混合广播环境中减少中断时间的数据块消除技术
2017 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PACRIM) Pub Date : 2017-08-01 DOI: 10.1109/PACRIM.2017.8121893
T. Yoshihisa
{"title":"Data piece elimination technique for interruption time reduction on hybrid broadcasting environments","authors":"T. Yoshihisa","doi":"10.1109/PACRIM.2017.8121893","DOIUrl":"https://doi.org/10.1109/PACRIM.2017.8121893","url":null,"abstract":"Most of the recent set-top boxes for digital video broadcasting connect to the Internet. They can receive data from broadcasting systems and from the Internet. Such hybrid broadcasting environments, in which clients can receive data from both broadcasting systems and communications systems, are suitable for streaming delivery since they complement their demerits for streaming delivery with each other. Although some methods to reduce interruption time for hybrid broadcasting environments have been proposed, their broadcast schedules include all data. By eliminating a part of data from broadcast schedules, interruption time can be further reduced. In this paper, I propose data piece elimination technique for interruption time reduction on hybrid broadcasting environments, and also propose some methods employing the technique. The simulation experiments revealed that the proposed scheme could reduce interruption time further than conventional methods.","PeriodicalId":308087,"journal":{"name":"2017 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PACRIM)","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114835653","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
An energy efficient real-time vehicle tracking system 高效节能的实时车辆跟踪系统
2017 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PACRIM) Pub Date : 2017-08-01 DOI: 10.1109/PACRIM.2017.8121884
Salman Almishari, Nor Ababtein, P. Dash, S. Naik
{"title":"An energy efficient real-time vehicle tracking system","authors":"Salman Almishari, Nor Ababtein, P. Dash, S. Naik","doi":"10.1109/PACRIM.2017.8121884","DOIUrl":"https://doi.org/10.1109/PACRIM.2017.8121884","url":null,"abstract":"Internet of Things (IoT) is a growing technology that combines and connects a variety of devices to generate more beneficial information. In this paper, an example of IoT portable system has been built and tested, which is called Smart Vehicle System (SVS). SVS includes three main parts: the Tracking Unit, Cloud, and Android application. The Tracking Unit is positioned inside a vehicle to sense the vehicle's temperature, speed, and location then uploads them to the cloud via a GSM network. Components and communication of the SVS are described in detail. constraints are included in the system to notify the administrator and the driver of certain events. SVS is a portable system, whose operation depends on batteries; therefore, a power reduction algorithm is proposed and examined. We have performed 19 different experiments, before and after applying the proposed algorithm, four of them are dynamic and 15 are at a fixed location. With the power reduction algorithm, we are able to reduce the energy consumption of the tracking unit by up to 17%.","PeriodicalId":308087,"journal":{"name":"2017 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PACRIM)","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122814707","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
Hardware-friendly method for rate-distortion optimization of HEVC intra coding HEVC帧内编码率失真优化的硬件友好方法
2017 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PACRIM) Pub Date : 2017-08-01 DOI: 10.1109/PACRIM.2017.8121907
Yanling Xu, X. Guo, Dayao Wei
{"title":"Hardware-friendly method for rate-distortion optimization of HEVC intra coding","authors":"Yanling Xu, X. Guo, Dayao Wei","doi":"10.1109/PACRIM.2017.8121907","DOIUrl":"https://doi.org/10.1109/PACRIM.2017.8121907","url":null,"abstract":"High Efficiency Video Coding (HEVC) employs the complex rate-distortion optimization (RDO) to choose the optimal mode decison which leads to the drastical increase of computation complexity. In order to solve the problem, this paper proposed a new RD estimation method for HEVC intra mode decision that uses transformed coefficients to do the rate-distortion optimization. For the rate part, the method uses the Cauchy distribution probability density of DCT coefficients to estimate the number of bits. For the distortion part, the differences between the DCT and IDCT coefficients are used for the distortion estimation. Compared with original HEVC algorithm, the proposed algorithm could reduce about 38% time consumption as well as the BD-rate is only 0.72%.","PeriodicalId":308087,"journal":{"name":"2017 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PACRIM)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122316572","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: 0
A reversible majority voter circuit and applications 一种可逆多数投票电路及其应用
2017 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PACRIM) Pub Date : 2017-08-01 DOI: 10.1109/PACRIM.2017.8121882
Md Asif Nashiry, J. Rice
{"title":"A reversible majority voter circuit and applications","authors":"Md Asif Nashiry, J. Rice","doi":"10.1109/PACRIM.2017.8121882","DOIUrl":"https://doi.org/10.1109/PACRIM.2017.8121882","url":null,"abstract":"Reversible logic is becoming a more and more attractive option to traditional logic, due to its potential to reduce heat dissipation. However traditional circuit design techniques can not always be translated to reversible circuits, and so new techniques for e.g. fault tolerance must be developed. We present a design for a reversible majority voter circuit which has applications not only in the development of fault tolerant reversible circuits, but also in areas such as data mining and classification.","PeriodicalId":308087,"journal":{"name":"2017 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PACRIM)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134509713","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
Automatic image cropping based on bottom-up saliency and top-down semantics 基于自底向上显著性和自顶向下语义的图像自动裁剪
2017 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PACRIM) Pub Date : 2017-08-01 DOI: 10.1109/PACRIM.2017.8121890
Jiang Lin, I. Bajić
{"title":"Automatic image cropping based on bottom-up saliency and top-down semantics","authors":"Jiang Lin, I. Bajić","doi":"10.1109/PACRIM.2017.8121890","DOIUrl":"https://doi.org/10.1109/PACRIM.2017.8121890","url":null,"abstract":"Automatic image cropping techniques have been developed recently to address the mismatch between the native display and image characteristics, such as resolution, aspect ratio, etc. These techniques usually rely on determining the importance of various regions in the image, or the aesthetic appeal of the final cropped image. In this work, we present a cropping method that combines bottom-up visual saliency and top-down semantic analysis to create a cropped image that best preserves important image content. Experimental results illustrate that the new method outperforms popular saliency-based cropping, which only relies on bottom-up analysis.","PeriodicalId":308087,"journal":{"name":"2017 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PACRIM)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130232077","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
Design of a beidou satellite radome for deep-sea buoys 用于深海浮标的北斗卫星天线罩设计
2017 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PACRIM) Pub Date : 2017-08-01 DOI: 10.1109/PACRIM.2017.8121896
Xiaolin Xia, Hao Zhang, Tingting Lv, T. Gulliver
{"title":"Design of a beidou satellite radome for deep-sea buoys","authors":"Xiaolin Xia, Hao Zhang, Tingting Lv, T. Gulliver","doi":"10.1109/PACRIM.2017.8121896","DOIUrl":"https://doi.org/10.1109/PACRIM.2017.8121896","url":null,"abstract":"A new quad-band radome for deep-sea applications is presented which can withstand pressures of more than 45 MPa. The manufacturing process for the antenna housing consists of three steps: selection of candidate wave transparent materials, determination of the radome wall thickness, and measurement of the transmission loss with different types of materials. Results of a pressure test of the antenna housing are presented. Further, communication and positioning tests were conducted to confirm that the radome has good radio wave transmittance in the frequency band 1561 MHz to 2492 MHz.","PeriodicalId":308087,"journal":{"name":"2017 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PACRIM)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124447694","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
Performance of software-defined networking controllers for different network topologies 软件定义网络控制器在不同网络拓扑下的性能
2017 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PACRIM) Pub Date : 2017-08-01 DOI: 10.1109/PACRIM.2017.8121925
Kamel Alrashedy, Ben Kimmett, T. Gulliver
{"title":"Performance of software-defined networking controllers for different network topologies","authors":"Kamel Alrashedy, Ben Kimmett, T. Gulliver","doi":"10.1109/PACRIM.2017.8121925","DOIUrl":"https://doi.org/10.1109/PACRIM.2017.8121925","url":null,"abstract":"With the increasing complexity of networks, Software Defined Networks (SDNs) have been developed to help administrators configure and operate network services with controllers such as Beacon, OpenDaylight and Floodlight. These controllers provide a suitable platform for high bandwidth applications. In this paper, several SDN controllers are evaluated using different network topologies. Some controllers cannot operate on topologies containing loops such as Pox and Beacon. OpenDaylight can be used on topologies with loops, but does not provide any benefit for multiple paths, i.e. when there is more than one path for a packet to reach its destination. Floodlight is the most efficient and adaptable controller with topologies containing loops and multiple paths. The controllers are evaluated on Mininet using ping and iperf, and the initial packet latency and throughput for the topologies are compared.","PeriodicalId":308087,"journal":{"name":"2017 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PACRIM)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122751718","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
Metrics for evaluation of educational experiences: Will virtual reality have impact? 评估教育体验的指标:虚拟现实会产生影响吗?
2017 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PACRIM) Pub Date : 2017-08-01 DOI: 10.1109/PACRIM.2017.8121919
Rachel Ralph, Derek Jacoby, Y. Coady, D. Balachandar, Emily Burt, Nathan Hnguyen, JongJik Kim, Krisha Maclang, Steven Wong, Larry Bafia
{"title":"Metrics for evaluation of educational experiences: Will virtual reality have impact?","authors":"Rachel Ralph, Derek Jacoby, Y. Coady, D. Balachandar, Emily Burt, Nathan Hnguyen, JongJik Kim, Krisha Maclang, Steven Wong, Larry Bafia","doi":"10.1109/PACRIM.2017.8121919","DOIUrl":"https://doi.org/10.1109/PACRIM.2017.8121919","url":null,"abstract":"Virtual Reality (VR) is poised to revolutionize education by immersing students in learning experiences in a way no other technology has before. In these early days of educational VR applications, it is critical to establish meaningful metrics to determine the potential benefits- and risks-of exposing elementary school students to interactive media using head mounted displays and hand held controllers. Previous work has determined that today's VR hardware is safe for children, but relatively little work has explored metrics educators could use to determine if the experience promoted learning. Based on established educational theoretical foundations, our work proposes metrics that directly align with 21st Century Learning. We propose combining questionnaires for Presence, Immersive Tendencies, and Flow, along with Rubric assessments for problem solving. The case study for our work is a new VR exhibit on the gold rush we are developing for the Royal British Columbia Museum.","PeriodicalId":308087,"journal":{"name":"2017 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PACRIM)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114408287","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
An RSSI based DV-hop algorithm for wireless sensor networks 基于RSSI的无线传感器网络DV-hop算法
2017 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PACRIM) Pub Date : 2017-08-01 DOI: 10.1109/PACRIM.2017.8121929
Han Xiao, Hao Zhang, Zengfeng Wang, T. Gulliver
{"title":"An RSSI based DV-hop algorithm for wireless sensor networks","authors":"Han Xiao, Hao Zhang, Zengfeng Wang, T. Gulliver","doi":"10.1109/PACRIM.2017.8121929","DOIUrl":"https://doi.org/10.1109/PACRIM.2017.8121929","url":null,"abstract":"Node localization plays a fundamental role in wireless sensor networks (WSNs). The distance vector hop (DV-Hop) algorithm is one of the best localization algorithms because of its low complexity, low cost, and simplicity. However, the localization accuracy can be poor when the number of anchor nodes is low. To improve this accuracy, a weighted DV-Hop algorithm based on the received signal strength indicator (RSSI) is proposed. First, the RSSI is used to determine the fractional hops between nodes. Then a corrected average hop distance is obtained. Finally, unconstrained optimization is used to improve the localization accuracy. Performance results are presented for a log-normal shadowing channel which shows that the proposed algorithm is superior to the DV-Hop and weighted DV-Hop (WDV-Hop) algorithms.","PeriodicalId":308087,"journal":{"name":"2017 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PACRIM)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115261996","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
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