2016 IEEE Global Communications Conference (GLOBECOM)最新文献_第4页

Towards a Range-Enhanced and Spectrum-Friendly G.fast 迈向距离增强和频谱友好的G.fast

2016 IEEE Global Communications Conference (GLOBECOM) Pub Date : 2016-12-01 DOI: 10.1109/GLOCOM.2016.7842337

D. Henao, J. Louveaux, G. Maierbacher

{"title":"Towards a Range-Enhanced and Spectrum-Friendly G.fast","authors":"D. Henao, J. Louveaux, G. Maierbacher","doi":"10.1109/GLOCOM.2016.7842337","DOIUrl":"https://doi.org/10.1109/GLOCOM.2016.7842337","url":null,"abstract":"The first standardized version of G.fast has been conceived to provide gigabit internet access from the distribution point (DP). Low transmit levels along its operational frequency range and low maximum aggregate transmit power (MAXATP) have been specified to restrict its electromagnetic emissions and enable the use of power available at customer premises to feed its access systems. Power constraints and a maximum bit-constellation size(Bmax=12 bits) limit its coverage and data rates, which could discourage service providers to deploy G.fast. This work analyzes different strategies that could be potentially pursued to enhance its coverage and improve its spectral compatibility with VDSL2 systems. We carry out an extensive simulation study to evaluate a) capacity boundaries of current G.fast systems; b benefits of increasing MAXATP, Bmax and power spectrum density (PSD) mask levels; and c) spectral shaping as means to improve G.fast compatibility. Our simulation results show that increasing MAXATP and Bmax boosts data rates and coverage in short loop scenarios, whereas improvements in long loops performance are only determined by MAXATP. Since such modifications generally increase the interference on legacy systems, we propose to perform power back-off (PBO) in order to improve G.fast spectrum-compatibility. As a proof of concept we adopt the PBO from VDSL2 with a fixed parameter set. Although clearly not optimized for the combination of TDD G.fast and FDD legacy systems and despite the simplicity of the adopted approach, our results indicate that spectral shaping can be an effective means to turn G.fast into a more spectrum-friendly system.","PeriodicalId":425019,"journal":{"name":"2016 IEEE Global Communications Conference (GLOBECOM)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122373959","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

Bidding Privacy Preservation for Dynamic Matching Based Spectrum Trading 基于动态匹配的频谱交易竞价隐私保护

2016 IEEE Global Communications Conference (GLOBECOM) Pub Date : 2016-12-01 DOI: 10.1109/GLOCOM.2016.7841629

S. Errapotu, Jingyi Wang, Zaixin Lu, Wei Li, M. Pan, Zhu Han

{"title":"Bidding Privacy Preservation for Dynamic Matching Based Spectrum Trading","authors":"S. Errapotu, Jingyi Wang, Zaixin Lu, Wei Li, M. Pan, Zhu Han","doi":"10.1109/GLOCOM.2016.7841629","DOIUrl":"https://doi.org/10.1109/GLOCOM.2016.7841629","url":null,"abstract":"Spectrum trading benefits secondary users (SUs) with accessing opportunities and primary users (PUs) with monetary gains in cognitive radio networks. In the spectrum trading market, bidding privacy is a serious concern for SUs, since untrustworthy PUs or spectrum traders may leverage bidding information to manipulate the trading or leak SU's bids to other SU competitors for illegal gains. Current centralized privacy preserving spectrum trading designs may incur extra infrastructure deployment, miss many instantaneous spectrum accessing opportunities, and have scalability issues. In this paper, we propose a novel privacy-preserving semi-distributed spectrum trading scheme, which has joint consideration of spectrum reuse, SUs' bidding privacy preservation, and PUs' revenue maximization. We use the conflict graph to characterize SUs' interference relationships, and jointly employ the Paillier Cryptosystem and dynamic matching with evolving preferences to conduct the privacy-preserving spectrum trading in a semi-distributed manner. Through security, complexity and performance analysis, we show that the proposed scheme can effectively preserve the privacy of SUs' bidding values, and notably increase the PUs' revenue and improve spectrum utilization with limited overhead.","PeriodicalId":425019,"journal":{"name":"2016 IEEE Global Communications Conference (GLOBECOM)","volume":"134 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122820364","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

Location Privacy of Non-Stationary Incumbent Systems in Spectrum Sharing 频谱共享中非平稳在位系统的位置隐私

2016 IEEE Global Communications Conference (GLOBECOM) Pub Date : 2016-12-01 DOI: 10.1109/GLOCOM.2016.7841962

Pradeep Reddy Vaka, Sudeep Bhattarai, J. Park

引用次数: 12

Towards Distributed Service Allocation in Fog-to-Cloud (F2C) Scenarios 面向雾到云(F2C)场景的分布式业务分配

2016 IEEE Global Communications Conference (GLOBECOM) Pub Date : 2016-12-01 DOI: 10.1109/GLOCOM.2016.7842341

Vitor Barbosa C. Souza, X. Masip-Bruin, E. Marín-Tordera, W. Ramírez, S. Sánchez-López

{"title":"Towards Distributed Service Allocation in Fog-to-Cloud (F2C) Scenarios","authors":"Vitor Barbosa C. Souza, X. Masip-Bruin, E. Marín-Tordera, W. Ramírez, S. Sánchez-López","doi":"10.1109/GLOCOM.2016.7842341","DOIUrl":"https://doi.org/10.1109/GLOCOM.2016.7842341","url":null,"abstract":"The novel Fog-to-Cloud (F2C) computing paradigm has been recently proposed aiming at the enhanced integration of Fog Computing and Cloud Computing through the coordinated management of underlying resources, taking into account the peculiarities inherent to each computing model, and enabling the parallel and distributed execution of services into distinct fog/cloud resources. Nevertheless, studies on F2C are still premature and several issues remain unsolved yet. For instance, in an F2C scenario service allocation must cope with the specific aspects associated to cloud and fog resource models, requiring distinct strategies to properly map IoT services into the most suitable available resources. In this paper, we propose a QoS-aware service distribution strategy contemplating both service requirements and resource offerings. We model the service allocation problem as a multidimensional knapsack problem (MKP) aiming at an optimal service allocation taking into consideration delay, load balancing and energy consumption. The presented results, demonstrate that the adopted strategy may be applied by F2C computing reducing the service allocation delay, while also diminishing load and energy consumption on cloud and fog resources.","PeriodicalId":425019,"journal":{"name":"2016 IEEE Global Communications Conference (GLOBECOM)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122205613","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: 64

Learning Automata-Based Channel Reservation Scheme to Enhance QoS in Vehicular Adhoc Networks 基于学习自动机的车载自组网信道预留方案

2016 IEEE Global Communications Conference (GLOBECOM) Pub Date : 2016-12-01 DOI: 10.1109/GLOCOM.2016.7841949

V. Saritha, P. V. Krishna, S. Misra, M. Obaidat

引用次数: 7

QoS-Aware VNF Placement Optimization in Edge-Central Carrier Cloud Architecture 边缘中心载波云架构中qos感知的VNF布局优化

2016 IEEE Global Communications Conference (GLOBECOM) Pub Date : 2016-12-01 DOI: 10.1109/GLOCOM.2016.7842188

F. Jemaa, G. Pujolle, Michel Pariente

引用次数: 84

Random-Phase Beamforming for Initial Access in Millimeter-Wave Cellular Networks 毫米波蜂窝网络初始接入的随机相位波束形成

2016 IEEE Global Communications Conference (GLOBECOM) Pub Date : 2016-12-01 DOI: 10.1109/GLOCOM.2016.7842197

Zohair Abu-Shaban, H. Wymeersch, Xiangyun Zhou, G. Seco-Granados, T. Abhayapala

引用次数: 10

An Analytical Method for Performance Evaluation of Digital Transparent Satellite Processors 数字透明卫星处理器性能评价的分析方法

2016 IEEE Global Communications Conference (GLOBECOM) Pub Date : 2016-12-01 DOI: 10.1109/GLOCOM.2016.7841581

V. Sulli, D. Giancristofaro, F. Santucci, M. Faccio

{"title":"An Analytical Method for Performance Evaluation of Digital Transparent Satellite Processors","authors":"V. Sulli, D. Giancristofaro, F. Santucci, M. Faccio","doi":"10.1109/GLOCOM.2016.7841581","DOIUrl":"https://doi.org/10.1109/GLOCOM.2016.7841581","url":null,"abstract":"Current perspectives for satellite communications are massively envisaging the introduction of a new generation of satellites based on semi-transparent transponder architectures. In this frame, technological constraints related to the development and implementation of novel payloads, that include significant on-board digital processing, call for careful system modeling and accurate digital hardware design in order to enable feasible trade-offs between hardware efficiency and overall link-budget performance. In this perspective, the present paper proposes a system model and a theoretical framework that include the following steps: i) fine characterization of the causes of non ideal behavior in all stages of a digital on-board processor, with definition of equivalent noise sources for the various blocks and derivation of their parameters, namely the noise figure and the noise temperature; ii) extension of the typical link-budget approach to incorporate contributions of the on-board digital segments. Numerical results are provided to validate the accuracy of approximations introduced in analytical modeling of the various blocks; a comparison with results obtained through C based Monte Carlo simulation is provided. Then a set of results are reported to illustrate - in a real satellite link design example - how the model can support advanced trade-offs that are of primary interest in the design of next generation satellite transponders, e,g. those based on translucent processors (digital transparent).","PeriodicalId":425019,"journal":{"name":"2016 IEEE Global Communications Conference (GLOBECOM)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128357941","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 Fuzzy Support Vector Machine Algorithm for Cooperative Spectrum Sensing with Noise Uncertainty 噪声不确定性协同频谱感知的模糊支持向量机算法

2016 IEEE Global Communications Conference (GLOBECOM) Pub Date : 2016-12-01 DOI: 10.1109/GLOCOM.2016.7841503

Yu-Di Huang, Ying-Chang Liang, Gang Yang

引用次数: 12

Resource Management for Optical Interconnects in Data Centre Networks 数据中心网络光互连的资源管理

2016 IEEE Global Communications Conference (GLOBECOM) Pub Date : 2016-12-01 DOI: 10.1109/GLOCOM.2016.7842226

D. P. Van, M. Fiorani, L. Wosinska, Jiajia Chen

{"title":"Resource Management for Optical Interconnects in Data Centre Networks","authors":"D. P. Van, M. Fiorani, L. Wosinska, Jiajia Chen","doi":"10.1109/GLOCOM.2016.7842226","DOIUrl":"https://doi.org/10.1109/GLOCOM.2016.7842226","url":null,"abstract":"This paper deals with resource management in data centre networks that feature optical interconnects. It first proposes an optical resource management framework as a platform to develop different solutions for multipoint-to-multipoint optical communication systems with a centralized controller. The paper takes optical intra-rack communications as an example application scenario of the framework and studies the intra-rack scheduling (IRS) problem using a theoretical approach. The problem is mapped into the classical open-shop scheduling problem, in which the optical interfaces are viewed as the jobs and the wavelengths used for communication among the interfaces are viewed as the machines. The IRS problem can therefore be solved by adopting the existing preemptive and/or non-preemptive open-shop scheduling algorithms. In a realistic intra-rack communication scenario with non-negligible network reconfiguration time, it is important to understand whether the preemptive or non-preemptive strategy provides better performance under given traffic conditions and system configurations. To address the question, this paper presents a performance analysis that allows to quantitatively compare the two scheduling strategies in terms of packet delay and potential energy savings obtained from sleep mode implementation. Analytical results reveal that the non-preemptive strategy outperforms the preemptive one for typical configurations used in data centre networks. In addition, the tuning and wake-up times of optical transceivers are shown to be key performance-determining factors. The proposed framework and obtained findings are not limited to the considered intra-rack communication scenario, but can be applied to any centralized optical switching systems featuring multipoint-to-multipoint transmissions with non-negligible reconfiguration time.","PeriodicalId":425019,"journal":{"name":"2016 IEEE Global Communications Conference (GLOBECOM)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128727223","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