2014 IEEE Global Communications Conference最新文献_第7页

Second-order statistic-based detection of Alamouti-coded OFDM signals for cognitive radio 基于二阶统计量的认知无线电alamouti编码OFDM信号检测

2014 IEEE Global Communications Conference Pub Date : 2014-12-01 DOI: 10.1109/GLOCOM.2014.7037271

Yahia A. Eldemerdash, O. Dobre

引用次数: 1

Comparison of situation awareness algorithms for remote health monitoring with smartphones 智能手机远程健康监测情境感知算法的比较

2014 IEEE Global Communications Conference Pub Date : 2014-12-01 DOI: 10.1109/GLOCOM.2014.7037176

I. Bisio, F. Lavagetto, M. Marchese, A. Sciarrone

{"title":"Comparison of situation awareness algorithms for remote health monitoring with smartphones","authors":"I. Bisio, F. Lavagetto, M. Marchese, A. Sciarrone","doi":"10.1109/GLOCOM.2014.7037176","DOIUrl":"https://doi.org/10.1109/GLOCOM.2014.7037176","url":null,"abstract":"Telemedicine applications provide healthcare services through communications technologies overcoming the geographical separation between patients and caregivers. These services can be provided via wireless devices, such as smart-phones with dedicated applications. An interesting application concerns the so-called situation awareness algorithms and, in particular, the Activity Recognition (AR) aimed at tracking the physical activity (or movements) of patients that need a constant monitoring of their medical conditions. This work takes as reference an architecture applicable, but not limited to, patients suffering from Heart Failure (HF) and presents a performance comparison between AR approaches based on the accelerometer signal captured through the patients' smartphones. In more detail, the considered AR techniques apply two different classifiers used to decide the patients movements: a J48 decision tree and a Support Vector Machine (SVM). For each classifier, three different features sets, characterizing the accelerometer signal, have been employed. The performance are evaluated both in terms of accuracy-related metrics and time needed by each classifiers to perform the decision. The results show that SVM provides the best accuracy while the J48 requires less classification time.","PeriodicalId":6492,"journal":{"name":"2014 IEEE Global Communications Conference","volume":"74 1","pages":"2454-2459"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86994953","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: 16

Exploiting spatial sparsity for estimating channels of hybrid MIMO systems in millimeter wave communications 利用空间稀疏性估计毫米波通信中混合MIMO系统的信道

2014 IEEE Global Communications Conference Pub Date : 2014-12-01 DOI: 10.1109/GLOCOM.2014.7037320

Junho Lee, Gye-Tae Gil, Y. H. Lee

{"title":"Exploiting spatial sparsity for estimating channels of hybrid MIMO systems in millimeter wave communications","authors":"Junho Lee, Gye-Tae Gil, Y. H. Lee","doi":"10.1109/GLOCOM.2014.7037320","DOIUrl":"https://doi.org/10.1109/GLOCOM.2014.7037320","url":null,"abstract":"Hybrid multiple input multiple output (MIMO) systems consist of an analog beamformer with large antenna arrays followed by a digital MIMO processor. Channel estimation for hybrid MIMO systems in millimeter wave (mm-wave) communications is challenging because of the large antenna array and the low signal-to-noise ratio (SNR) before beamforming. In this paper, we propose an open-loop channel estimator for mm-wave hybrid MIMO systems exploiting the sparse nature of mm-wave channels. A sparse signal recovery problem is formulated for channel estimation and solved by the orthogonal matching pursuit (OMP) based methods. A modification of the OMP algorithm, called the multi-grid (MG) OMP, is proposed. It is shown that the MG-OMP can significantly reduce the computational load of the OMP method. A process for designing the training beams is also developed. Specifically, given the analog training beams the baseband processor for beam training is designed. Simulation results demonstrate the advantage of the OMP based methods over the conventional least squares (LS) method and the efficiency of the MG-OMP over the original OMP.","PeriodicalId":6492,"journal":{"name":"2014 IEEE Global Communications Conference","volume":"41 1","pages":"3326-3331"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88028110","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: 150

Secured cooperative cognitive radio networks with relay selection 具有中继选择的安全协作认知无线电网络

2014 IEEE Global Communications Conference Pub Date : 2014-12-01 DOI: 10.1109/GLOCOM.2014.7037277

T. Duong, Tran Trung Duy, M. Elkashlan, N. Tran, O. Dobre

引用次数: 37

Privacy-preserving location authentication in WiFi with fine-grained physical layer information WiFi保护隐私的位置认证，具有细粒度的物理层信息

2014 IEEE Global Communications Conference Pub Date : 2014-12-01 DOI: 10.1109/GLOCOM.2014.7037570

Victor Y. Chen, Wei Wang, Qian Zhang

{"title":"Privacy-preserving location authentication in WiFi with fine-grained physical layer information","authors":"Victor Y. Chen, Wei Wang, Qian Zhang","doi":"10.1109/GLOCOM.2014.7037570","DOIUrl":"https://doi.org/10.1109/GLOCOM.2014.7037570","url":null,"abstract":"The surging deployment of WiFi hotspots in public places drives the blossoming of location-based services (LBSs) available. A recent measurement reveals that a large portion of the reported locations are either forged or superfluous, which calls attention to location authentication. However, existing authentication approaches breach user's location privacy, which is of wide concern of both individuals and governments. In this paper, we propose PriLA, a privacy-preserving location authentication protocol that facilitates location authentication without compromising user's location privacy in WiFi networks. PriLA exploits physical layer information, namely carrier frequency offset (CFO) and multipath profile, from user's frames. In particular, PriLA leverages CFO to secure wireless transmission between the mobile user and the access point (AP), and meanwhile authenticate the reported locations without leaking the exact location information based on the coarse-grained location proximity being extracted from user's multipath profile. Existing privacy preservation techniques on upper layers can be applied on top of PriLA to enable various applications. We have implemented PriLa on GNURadio/USRP platform and off-the-shelf Intel 5300 NIC. The experimental results demonstrate the practicality of CFO injection and accuracy of multipath profile based location authentication in a real-world environment.","PeriodicalId":6492,"journal":{"name":"2014 IEEE Global Communications Conference","volume":"30 6 1","pages":"4827-4832"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88383490","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

Communication-constrained p-center problem for event coverage in theme parks 主题公园活动报道的沟通约束p-center问题

2014 IEEE Global Communications Conference Pub Date : 2014-12-01 DOI: 10.1109/GLOCOM.2014.7036855

Giirkan Solmaz, K. Akkaya, D. Turgut

引用次数: 8

On design of improper signaling for ser minimization in K-user interference channel k用户干扰信道中用户最小化的不当信令设计

2014 IEEE Global Communications Conference Pub Date : 2014-12-01 DOI: 10.1109/GLOCOM.2014.7037050

Hieu Duy Nguyen, Rui Zhang, Sumei Sun

引用次数: 1

A stochastic power control game for two-tier cellular networks with energy harvesting small cells 具有能量收集小单元的两层蜂窝网络的随机功率控制博弈

2014 IEEE Global Communications Conference Pub Date : 2014-12-01 DOI: 10.1109/GLOCOM.2014.7037205

Tran Kien Thuc, H. Tabassum, E. Hossain

引用次数: 10

On forecasting the ONU sleep period in XG-PON systems using exponential smoothing techniques 用指数平滑技术预测XG-PON系统的ONU睡眠周期

2014 IEEE Global Communications Conference Pub Date : 2014-12-01 DOI: 10.1109/GLOCOM.2014.7037196

P. Sarigiannidis, Athanasios Gkaliouris, V. Kakali, M. Louta, G. Papadimitriou, Petros Nicopolitidis, M. Obaidat

{"title":"On forecasting the ONU sleep period in XG-PON systems using exponential smoothing techniques","authors":"P. Sarigiannidis, Athanasios Gkaliouris, V. Kakali, M. Louta, G. Papadimitriou, Petros Nicopolitidis, M. Obaidat","doi":"10.1109/GLOCOM.2014.7037196","DOIUrl":"https://doi.org/10.1109/GLOCOM.2014.7037196","url":null,"abstract":"Power management has been advanced on a crucial factor in the design of modern access networks. Furthermore, the proliferation of optical networking in the last mile led major Telecom unions, such as the International Telecommunication Union (ITU), to emerge energy consumption as a critical objective of the next generation passive optical networks (NG-PONs). In particular, the standardization of the 10-gigabit-capable PON (XG-PON) entails well-defined specifications towards power management and energy reduction, especially regarding the power control of optical terminal devices such as the optical network units (ONUs). In this way, the optical line terminator (OLT) along with ONUs are able to cooperate with each other in order to succeed energy reduction, by applying doze or cyclic sleep periods to idle ONUs. However, the sleep period determination remains a quite challenging research area. In this study, we endeavor to provide XG-PON networks with an effective forecasting mechanism that is capable of estimating the time duration of the forthcoming sleep session. To this end, we apply the exponential smoothing technique to best estimate the sleep duration based on the monitoring time series observations. The obtained evaluation results sound quite promising, since the proposed model accomplishes to advance the trade-off between the energy reduction and network efficiency.","PeriodicalId":6492,"journal":{"name":"2014 IEEE Global Communications Conference","volume":"1 1","pages":"2580-2585"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89165962","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

Scalable coordinated uplink processing in cloud radio access networks 云无线接入网络中可扩展的协调上行处理

2014 IEEE Global Communications Conference Pub Date : 2014-12-01 DOI: 10.1109/GLOCOM.2014.7037365

Congmin Fan, Y. Zhang, Xiaojun Yuan

{"title":"Scalable coordinated uplink processing in cloud radio access networks","authors":"Congmin Fan, Y. Zhang, Xiaojun Yuan","doi":"10.1109/GLOCOM.2014.7037365","DOIUrl":"https://doi.org/10.1109/GLOCOM.2014.7037365","url":null,"abstract":"Featured by centralized processing and cloud based infrastructure, Cloud Radio Access Network (C-RAN) is a promising solution to achieve an unprecedented system capacity in future wireless cellular networks. The huge capacity gain mainly comes from the centralized and coordinated signal processing at the cloud server. However, full-scale coordination in a large-scale C-RAN requires the processing of very large channel matrices, leading to high computational complexity and channel estimation overhead. To resolve this challenge, we show in this paper that the channel matrices can be greatly sparsified without substantially compromising the system capacity. Through rigorous analysis, we derive a simple threshold-based channel matrix sparsification approach. Based on this approach, for reasonably large networks, the non-zero entries in the channel matrix can be reduced to a very low percentage (say 0.13% ~ 2%) by compromising only 5% of SINR. This means each RRH only needs to obtain the CSI of a small number of closest users, resulting in a significant reduction in the channel estimation overhead. On the other hand, the high sparsity of the channel matrix allows us to design detection algorithms that are scalable in the sense that the average computational complexity per user does not grow with the network size.","PeriodicalId":6492,"journal":{"name":"2014 IEEE Global Communications Conference","volume":"112 1","pages":"3591-3596"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80759662","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