2015 IEEE 16th International Symposium on A World of Wireless, Mobile and Multimedia Networks (WoWMoM)最新文献_第7页

HEVC decoder optimization in low power configurable architecture for wireless devices 无线设备低功耗可配置架构中的HEVC解码器优化

2015 IEEE 16th International Symposium on A World of Wireless, Mobile and Multimedia Networks (WoWMoM) Pub Date : 2015-06-14 DOI: 10.1109/WoWMoM.2015.7158216

Vasileios Magoulianitis, I. Katsavounidis

{"title":"HEVC decoder optimization in low power configurable architecture for wireless devices","authors":"Vasileios Magoulianitis, I. Katsavounidis","doi":"10.1109/WoWMoM.2015.7158216","DOIUrl":"https://doi.org/10.1109/WoWMoM.2015.7158216","url":null,"abstract":"High Efficiency Video Coding (HEVC) is the new video compression standard, reducing bitrates nearly at half compared to H.264, offering potentially significant power savings for wireless video transmission at the network interface. This reduction in bitrate is achieved by a series of computationally expensive algorithms, thus making imperative to optimize HEVC decoding in order to provide a low-power implementation that can be used in mobile devices. Extending the Instruction Set Architecture (ISA) of a configurable microprocessor with new instructions for a target application can reduce the total effort of the application, thus reducing operating frequency and eventually power. The flexibility and relatively low design effort of such microprocessors - compared to hardwired Application-Specific-Integrated-Circuit (ASIC) designs - reduces the time space for adoption of HEVC and makes them an efficient alternative for wireless devices. We propose an efficient quarter-pixel interpolation filter implementation for HEVC using new custom-made instructions and other techniques for optimization of motion compensation, implemented on a configurable microprocessor architecture. Simulation results show a four times acceleration on average of the interpolation filter module over the reference HEVC software and an overall doubling in decoder performance.","PeriodicalId":221796,"journal":{"name":"2015 IEEE 16th International Symposium on A World of Wireless, Mobile and Multimedia Networks (WoWMoM)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128239018","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

U-TV: User-centric scalable DTV broadcast over heterogeneous wireless networks U-TV:在异构无线网络上以用户为中心的可扩展数字电视广播

2015 IEEE 16th International Symposium on A World of Wireless, Mobile and Multimedia Networks (WoWMoM) Pub Date : 2015-06-14 DOI: 10.1109/WoWMoM.2015.7158171

Chetna Singhal, S. De, H. Gupta

引用次数: 2

An integrated simulation environment for Wireless Sensor Networks 无线传感器网络集成仿真环境

2015 IEEE 16th International Symposium on A World of Wireless, Mobile and Multimedia Networks (WoWMoM) Pub Date : 2015-06-14 DOI: 10.1109/WoWMoM.2015.7158177

M. Prist, S. Longhi, A. Monteriù, F. Giuggioloni, A. Freddi

{"title":"An integrated simulation environment for Wireless Sensor Networks","authors":"M. Prist, S. Longhi, A. Monteriù, F. Giuggioloni, A. Freddi","doi":"10.1109/WoWMoM.2015.7158177","DOIUrl":"https://doi.org/10.1109/WoWMoM.2015.7158177","url":null,"abstract":"Simulators for Wireless Sensor Networks (WSNs) are one of the most important tools for systems development. They enable to study and evaluate new theories and hypotheses for sensors data gathering, testing new applications and protocols. Nowadays, there are a large number of open source WSN simulators and they can be divided into different categories according to their features and main applications. Due to the ability to increase the real WSN prototyping, the Cross Levels Simulator, like Cooja, has become an important class of simulators. Although they are open source, flexible and extensible in all levels, the test interface, the external connection at a physical level and the direct interaction with the process control via the WSN is very poor. In this work we present the Cooja Advanced Sky Interface which is an extension of the Contiki's Cooja network simulator for the Sky mote. Due to the absence of the analog output control in the Contiki OS for the Sky mote, as additional contribution, the Contiki Sky DAC driver has been developed and tested in the Cooja Simulator with the Advanced Sky GUI and GISOO plugin to give the ability to implement control over the wireless sensor network.","PeriodicalId":221796,"journal":{"name":"2015 IEEE 16th International Symposium on A World of Wireless, Mobile and Multimedia Networks (WoWMoM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130582847","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

The design of a generalised approach to the programming of systems of systems 系统的系统的编程的一种通用方法的设计

2015 IEEE 16th International Symposium on A World of Wireless, Mobile and Multimedia Networks (WoWMoM) Pub Date : 2015-06-14 DOI: 10.1109/WoWMoM.2015.7158188

G. Coulson, G. Blair, Yehia El-khatib, A. Mauthe

引用次数: 7

An experimental study on the statistical properties of radio environment noise 无线电环境噪声统计特性的实验研究

2015 IEEE 16th International Symposium on A World of Wireless, Mobile and Multimedia Networks (WoWMoM) Pub Date : 2015-06-14 DOI: 10.1109/WoWMoM.2015.7158200

Alexandros Palaios, Hauke Dose, Janne Riihijärvi, P. Mähönen

{"title":"An experimental study on the statistical properties of radio environment noise","authors":"Alexandros Palaios, Hauke Dose, Janne Riihijärvi, P. Mähönen","doi":"10.1109/WoWMoM.2015.7158200","DOIUrl":"https://doi.org/10.1109/WoWMoM.2015.7158200","url":null,"abstract":"We study the statistical characteristics of radio environment noise, in particular focusing on spurious received power arising from adjacent channel interference, harmonics and wideband man-made interference. Unlike the majority of existing studies, our measurements enable a comprehensive study on frequencies ranging from 80MHz to 2.64 GHz instead of being focused on the properties of an application-specific narrow band. We also apply a comprehensive statistical methodology to study how closely the measured noise can be modeled using a traditional white Gaussian stochastic process. In particular, we do not only focus on the parametric modeling of the marginal power distribution, but seek deviations from the whiteness of the noise through detailed time domain characterization, and apply a rigorous hypothesis testing on deviations from normality. Our results show that while the measured noise is often close to being white and nearly Gaussian, these properties are not as universal as often assumed in the literature. In particular, impulsive noise causes deviations both from normality of the marginals, as well as from the whiteness of the spectrum at levels that depend on the environment.","PeriodicalId":221796,"journal":{"name":"2015 IEEE 16th International Symposium on A World of Wireless, Mobile and Multimedia Networks (WoWMoM)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114270511","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: 3

Water flow Driven Sensor Networks for leakage and contamination monitoring 用于泄漏和污染监测的水流驱动传感器网络

2015 IEEE 16th International Symposium on A World of Wireless, Mobile and Multimedia Networks (WoWMoM) Pub Date : 2015-06-14 DOI: 10.1145/3342513

Amitangshu Pal, K. Kant

引用次数: 12

Offload (only) the right jobs: Robust offloading using the Markov decision processes 卸载(只)正确的工作:使用马尔可夫决策过程进行稳健卸载

2015 IEEE 16th International Symposium on A World of Wireless, Mobile and Multimedia Networks (WoWMoM) Pub Date : 2015-06-14 DOI: 10.1109/WoWMoM.2015.7158127

Esa Hyytiä, T. Spyropoulos, J. Ott

引用次数: 36

Taxi-cab cloud architecture to offload data traffic from cellular networks 出租车云架构，从蜂窝网络卸载数据流量

2015 IEEE 16th International Symposium on A World of Wireless, Mobile and Multimedia Networks (WoWMoM) Pub Date : 2015-06-14 DOI: 10.1109/WoWMoM.2015.7158213

K. Ezirim, Shweta Jain

{"title":"Taxi-cab cloud architecture to offload data traffic from cellular networks","authors":"K. Ezirim, Shweta Jain","doi":"10.1109/WoWMoM.2015.7158213","DOIUrl":"https://doi.org/10.1109/WoWMoM.2015.7158213","url":null,"abstract":"The next generation mobile networks (NGMN) are over-taxed by the increasing demand of on-the-go content access. Standards bodies and researchers are building solutions that offload the traffic demands from the NGMN infrastructure to small cells. We motivate a taxicab cloud as a mobile ISP that offloads traffic demands from NGMN to under-utilized licensed bands such as TV whitespaces. This cloud consists of mobile (taxicabs) and fixed cloudlets. Fixed cloudlets are placed around major transit hubs in New York City. Cloudlets communicate with each other using cognitive radio (CR) technology for opportunistic spectrum access in the licensed band. Mobile cloudlets feature a multi-radio design to allow various short-range connection options (Bluetooth, Wi-Fi, mmWave etc.) to user equipment (UE). Cloudlets maintain distributed caches of popular content while UEs use name based content retrieval to access content. We use this scenario as a backdrop to study the taxicab mobility pattern. This is a bottom-up approach to designing suitable network and link layer technologies as well as estimate the benefits i.e., volume of traffic offloaded from the NGMN.","PeriodicalId":221796,"journal":{"name":"2015 IEEE 16th International Symposium on A World of Wireless, Mobile and Multimedia Networks (WoWMoM)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115805457","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

In the shadows we trust: A secure aggregation tolerant watermark for data streams 在阴影中，我们信任:数据流的安全聚合容忍水印

2015 IEEE 16th International Symposium on A World of Wireless, Mobile and Multimedia Networks (WoWMoM) Pub Date : 2015-06-14 DOI: 10.1109/WoWMoM.2015.7158149

A. S. Panah, R. V. Schyndel, T. Sellis, E. Bertino

{"title":"In the shadows we trust: A secure aggregation tolerant watermark for data streams","authors":"A. S. Panah, R. V. Schyndel, T. Sellis, E. Bertino","doi":"10.1109/WoWMoM.2015.7158149","DOIUrl":"https://doi.org/10.1109/WoWMoM.2015.7158149","url":null,"abstract":"In many applications such as sensor networks, e-healthcare and environmental monitoring, data is continuously streamed and combined from multiple resources in order to make decisions based on the aggregated data streams. One major concern in these applications is assuring high trustworthiness of the aggregated data stream for correct decision-making. For example, an adversary may compromise a few data-sources and introduce false data into the aggregated data-stream and cause catastrophic consequences. In this work, we propose a novel method for verifying data integrity by embedding several signature codes within data streams known as digital watermarking. Therefore, the integrity of the data streams can be verified by decoding the embedded signatures even as the data go through multiple stages of aggregation process. Although the idea of secure data aggregation based on digital watermarking has been explored before, we aim to improve the efficiency of the scheme by examining several signature codes that could also decrease the watermark detection complexity. This is achieved by simultaneous embedding of several shifted watermark patterns into aggregated data stream, such that the contribution of each data-source is hidden in the relative shifts of the patterns. We, also, derive conditions to preserve the main statistical properties of data-streams prior to the embedding procedure. Therefore, we can guarantee that the embedding procedure does not compromise the usability of data streams for any operations that depends on these statistical characteristics. The simulation results show that the embedded watermarks can successfully be recovered with high confidence if proper hiding codes are chosen.","PeriodicalId":221796,"journal":{"name":"2015 IEEE 16th International Symposium on A World of Wireless, Mobile and Multimedia Networks (WoWMoM)","volume":"436 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126116049","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: 12

Rational coordination of crowdsourced resources for geo-temporal request satisfaction 合理协调众包资源以满足时空需求

2015 IEEE 16th International Symposium on A World of Wireless, Mobile and Multimedia Networks (WoWMoM) Pub Date : 2015-06-14 DOI: 10.1109/WOWMOM.2015.7158202

Christine Bassem, Azer Bestavros

引用次数: 1