2014 IEEE Globecom Workshops (GC Wkshps)最新文献_第8页

Precoded massive MU-MIMO uplink transmission under transceiver I/Q imbalance 收发器I/Q不平衡下的预编码海量MU-MIMO上行传输

2014 IEEE Globecom Workshops (GC Wkshps) Pub Date : 2014-12-01 DOI: 10.1109/GLOCOMW.2014.7063451

Aki Hakkarainen, J. Werner, K. Dandekar, M. Valkama

引用次数: 11

Challenges and opportunities for millimeter-wave mobile access standardisation 毫米波移动接入标准化的挑战与机遇

2014 IEEE Globecom Workshops (GC Wkshps) Pub Date : 2014-12-01 DOI: 10.1109/GLOCOMW.2014.7063490

V. Frascolla, Michael Faerber, L. Dussopt, E. Strinati, R. Sauleau, Vincent Kotzsch, G. Romano, Karri Ranta-aho, J. Putkonen, J. Valino

引用次数: 17

Performance analysis of DRX mechanism considering analogue beamforming in millimeter-wave mobile broadband system 考虑模拟波束形成的毫米波移动宽带系统DRX机制性能分析

2014 IEEE Globecom Workshops (GC Wkshps) Pub Date : 2014-12-01 DOI: 10.1109/GLOCOMW.2014.7063531

Sangwook Kwon, June Hwang, Anil Agiwal, Hyunjeong Kang

{"title":"Performance analysis of DRX mechanism considering analogue beamforming in millimeter-wave mobile broadband system","authors":"Sangwook Kwon, June Hwang, Anil Agiwal, Hyunjeong Kang","doi":"10.1109/GLOCOMW.2014.7063531","DOIUrl":"https://doi.org/10.1109/GLOCOMW.2014.7063531","url":null,"abstract":"To meet the explosive growth of mobile traffic, it is necessary to guarantee high data rate in today's communication system. One of the methods to support high data rate is to use wide bandwidth (spectrum). Due to the limitation of frequency spectrum for the commercial usage, we choose millimeter-Wave (mmW) band of 30GHz and exploit analogue beamforming technique, focusing electro-magnetic wave energy at a certain direction, not an omni-direction. In the analogue beamforming technique, beam selection is required so that base station (BS) and mobile station (MS) communicate with the best beam each other and this procedure is performed periodically for the selected beams not to be mis-aligned. To extend battery lifetime of user equipment, current broadband system such as 3GPP LTE/LTE Advanced adopts discontinuous reception (DRX) which the new mmW system needs too. Therefore, we propose the DRX mechanism considering analogue beamforming technique and analyze the performance of the system varying parameters of beam selection and DRX according to the given beam pattern, traffic model and movement of MS.","PeriodicalId":354340,"journal":{"name":"2014 IEEE Globecom Workshops (GC Wkshps)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115505498","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: 19

Block acknowledgment in IEEE 802.15.4 by employing DSSS and CSS PHY layers IEEE 802.15.4中采用DSSS和CSS物理层的块确认

2014 IEEE Globecom Workshops (GC Wkshps) Pub Date : 2014-12-01 DOI: 10.1109/GLOCOMW.2014.7063524

Norberto Barroca, L. M. Borges, F. Velez, P. Chatzimisios

{"title":"Block acknowledgment in IEEE 802.15.4 by employing DSSS and CSS PHY layers","authors":"Norberto Barroca, L. M. Borges, F. Velez, P. Chatzimisios","doi":"10.1109/GLOCOMW.2014.7063524","DOIUrl":"https://doi.org/10.1109/GLOCOMW.2014.7063524","url":null,"abstract":"The IEEE 802.15.4 standard has been widely accepted as the de facto standard for Wireless Sensor Networks (WSNs), since it provides ultra-low complexity, cost and energy consumption for low-data rate wireless connectivity. However, one of the fundamental reasons for the IEEE 802.15.4 Medium Access Control (MAC) inefficiency is overhead. In the context of our research, we demonstrate that WSNs may benefit from packet concatenation. In this paper we introduce and study the employment of a block acknowledgment mechanisms in order to achieve enhanced channel efficiency in IEEE 802.15.4 nonbeacon-enabled networks for both the Chirp Spread Spectrum (CSS) and Direct Sequence Spread Spectrum (DSSS) Physical (PHY) layers for the 2.4 Industrial, Scientific and Medical (ISM) frequency band. The proposal of the two new innovative MAC sublayer mechanisms can also be considered as a future possible contribution to the standard itself. The throughput and delay performance is mathematically derived under ideal conditions, (i.e., a channel environment without transmission errors). The performance of the proposed schemes is compared against the IEEE 802.15.4 standard through extensive simulations by employing the OMNeT++ simulator. We demonstrate that, for both PHY layers, the network performance is significantly improved in terms of throughput, end-to-end delay and bandwidth efficiency.","PeriodicalId":354340,"journal":{"name":"2014 IEEE Globecom Workshops (GC Wkshps)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115511755","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

Experimental multiuser mobile optical communication using compressive sensing 基于压缩感知的实验性多用户移动光通信

2014 IEEE Globecom Workshops (GC Wkshps) Pub Date : 2014-12-01 DOI: 10.1109/GLOCOMW.2014.7063475

Javier Perez-Ramirez, E. Curry, D. Borah, J. M. Hinojo

引用次数: 7

Dynamic break even pricing for cloud federation 云联盟的动态盈亏平衡定价

2014 IEEE Globecom Workshops (GC Wkshps) Pub Date : 2014-12-01 DOI: 10.1109/GLOCOMW.2014.7063388

Bassem El Zant, M. Gagnaire

引用次数: 2

Dynamic multi-user transmission for efficient dimensioning in Green LTE-A uplink networks Green LTE-A上行网络中高效维数的动态多用户传输

2014 IEEE Globecom Workshops (GC Wkshps) Pub Date : 2014-12-01 DOI: 10.1109/GLOCOMW.2014.7063530

L. Mroueh, E. Vivier

引用次数: 0

Additions to the ETArch control plane to support multimedia QoS-guaranteed content transport over OpenFlow-enabled SDN future internet systems 添加到ETArch控制平面，以支持在启用openflow的SDN未来互联网系统上进行多媒体qos保证的内容传输

2014 IEEE Globecom Workshops (GC Wkshps) Pub Date : 2014-12-01 DOI: 10.1109/GLOCOMW.2014.7063426

José Castillo Lema, A. Neto, Flávio de Oliveira Silva, P. F. Rosa, R. Aguiar, Airton Ishimori, Fernando N. N. Farias, A. Abelém

{"title":"Additions to the ETArch control plane to support multimedia QoS-guaranteed content transport over OpenFlow-enabled SDN future internet systems","authors":"José Castillo Lema, A. Neto, Flávio de Oliveira Silva, P. F. Rosa, R. Aguiar, Airton Ishimori, Fernando N. N. Farias, A. Abelém","doi":"10.1109/GLOCOMW.2014.7063426","DOIUrl":"https://doi.org/10.1109/GLOCOMW.2014.7063426","url":null,"abstract":"The Future Internet approach requires new solutions to support novel usage scenarios driven by the technological evolution and the new service demands. However, this paradigm shift requires deeper changes in the existing systems, which makes Internet providers reluctant in deploying the full transformation required for the Future Internet. The Entity Title Architecture (ETArch) is a holistic clean-slate Future Internet system embedding new services for these scenarios leveraging the Software Defined Networking (SDN) concept materialized by the OpenFlow. However, legacy ETArch deploys a fully per-flow approach to provision the same transport model for all sessions (equivalent to the Internet best-effort), while suffering with performance drawbacks and lacking Quality of Service (QoS) control. To that, we evolved ETArch with SMART (Support of Mobile Sessions with High Transport Network Resource Demand) QoS control approach, which coordinates admission control and dynamic control of super-dimensioned resources to accommodate multimedia sessions with QoS-guaranteed over time, while keeping scalability/performance and users with full Quality of Experience (QoE). The SMART-enabled ETArch system evaluation was carried out using a real Testbed of the OFELIA Brazilian Island, confirming its benefits in both data and control planes over the legacy ETArch.","PeriodicalId":354340,"journal":{"name":"2014 IEEE Globecom Workshops (GC Wkshps)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125388763","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

Cloud-aware power control for cloud-enabled small cells 支持云的小型单元的云感知电源控制

2014 IEEE Globecom Workshops (GC Wkshps) Pub Date : 2014-12-01 DOI: 10.1109/GLOCOMW.2014.7063570

P. Mach, Zdenek Becvar

{"title":"Cloud-aware power control for cloud-enabled small cells","authors":"P. Mach, Zdenek Becvar","doi":"10.1109/GLOCOMW.2014.7063570","DOIUrl":"https://doi.org/10.1109/GLOCOMW.2014.7063570","url":null,"abstract":"Requirements of current services and applications on computational power are still increasing. Hence, the utilization of these by the mobile user equipment (UE) having limited battery lifetime is quite a challenge. To cope with this problem, the mobile cloud computing can be exploited to offload high complex applications to the cloud. Nevertheless, the conventional mobile cloud solution introduces high delay and limits the use of delay sensitive services and applications. One feasible solution is to enhance small cells (SCeNBs) with computing capabilities and, thus, perform computing closer to the users accomplishing low delay. However, the high density deployment of the SCeNBs and UEs' mobility can result in often outage situation or handover when low delay tolerant data cannot be delivered from the cloud on time and become irrelevant. In this paper we propose power control algorithm, which purpose is to guarantee that the requests processed by the small cell cloud are received by the UE within required delay. This is done by coarse and dynamic fine setting of the SCeNB's transmitting power level. The simulations demonstrate the amount of undelivered requests from the small cell cloud can be significantly minimized when compared to competitive schemes. At the same time, QoS of non-cloud users is only slightly impaired when compared to the scheme giving solely preferences to non-cloud users. We also show that the overhead introduced by our power control mechanism is negligible.","PeriodicalId":354340,"journal":{"name":"2014 IEEE Globecom Workshops (GC Wkshps)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126625491","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: 17

Outage optimal subcarrier allocation for downlink secure OFDMA systems 下行安全OFDMA系统的中断最优子载波分配

2014 IEEE Globecom Workshops (GC Wkshps) Pub Date : 2014-12-01 DOI: 10.1109/GLOCOMW.2014.7063616

B. Bai, Wei Chen, Z. Cao

{"title":"Outage optimal subcarrier allocation for downlink secure OFDMA systems","authors":"B. Bai, Wei Chen, Z. Cao","doi":"10.1109/GLOCOMW.2014.7063616","DOIUrl":"https://doi.org/10.1109/GLOCOMW.2014.7063616","url":null,"abstract":"Security and privacy issues are becoming more and more important in orthogonal frequency division multiple access (OFDMA) based 4G wireless communication systems. Recently, the security issue was treated from the perspective of physical layer, which mainly focused on improving the average secrecy rate in wireless fading channels. In this paper, the subcarrier allocation problem is considered for secure OFDMA systems. The objective is to minimize the outage probability of each user while guaranteeing the target secrecy rate. Although the induced optimization problem is a probabilistic integral programming, a novel random bipartite graph (RBG) approach will still be proposed to solve this problem. The random rotation based Hopcroft-Karp (R2HK) algorithm, which enjoys a logarithm-polynomial complexity, will then be proposed to minimize the secrecy outage probability with fairness assurance. By analyzing the properties of the RBG based R2HK algorithm, an approximation for the secrecy outage probability will be obtained in closed-form formulas. Simulation results will not only illustrate the accuracy of the theoretical results in this paper, but also show the performance gain of the proposed algorithm.","PeriodicalId":354340,"journal":{"name":"2014 IEEE Globecom Workshops (GC Wkshps)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126517026","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