2013 IEEE Globecom Workshops (GC Wkshps)最新文献_第4页

Zero-forcing receiver in uplink massive MIMO 在上行大规模MIMO零强迫接收机

2013 IEEE Globecom Workshops (GC Wkshps) Pub Date : 2013-12-01 DOI: 10.1109/GLOCOMW.2013.6824976

Y. Li, Young-Han Nam, B. L. Ng

引用次数: 5

Antenna selection in measured massive MIMO channels using convex optimization 基于凸优化的大规模MIMO信道天线选择

2013 IEEE Globecom Workshops (GC Wkshps) Pub Date : 2013-12-01 DOI: 10.1109/GLOCOMW.2013.6824974

Xiang Gao, O. Edfors, Jianan Liu, F. Tufvesson

{"title":"Antenna selection in measured massive MIMO channels using convex optimization","authors":"Xiang Gao, O. Edfors, Jianan Liu, F. Tufvesson","doi":"10.1109/GLOCOMW.2013.6824974","DOIUrl":"https://doi.org/10.1109/GLOCOMW.2013.6824974","url":null,"abstract":"Massive MIMO, also known as very-large MIMO or large-scale antenna systems, is a new technique that potentially can offer large network capacities in multi-user scenarios, where the base stations are equipped with a large number of antennas simultaneously serving multiple single-antenna users on the same frequency. However, the radio-frequency (RF) chains associated with the antennas increase the system complexity and hardware cost. Antenna selection is a signal processing technique that can help reduce the number of RF chains, while preserving the system performance at a certain required level. We study the transmit antenna selection in measured massive MIMO channels from several measurement campaigns in the 2.6 GHz frequency range. Convex optimization is used to select the antenna subset that maximizes the dirty-paper coding (DPC) capacity in the downlink. With a certain number of RF chains, we increase the number of base station antennas from the same as the RF chains to a large number, from which we perform the antenna selection. The investigation shows that with more available antennas than RF chains, the antenna selection can significantly improve the system performance, especially for a compact cylindrical array, which without this antenna selection shows lower performance than a physically large linear array with the same number of elements, in the studied scenarios.","PeriodicalId":174992,"journal":{"name":"2013 IEEE Globecom Workshops (GC Wkshps)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134049502","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: 118

Quality aware, adaptive, 3D media distribution over P2P architectures 质量意识，自适应，3D媒体分发P2P架构

2013 IEEE Globecom Workshops (GC Wkshps) Pub Date : 2013-12-01 DOI: 10.1109/GLOCOMW.2013.6825145

M. Leszczuk, Dawid Juszka, L. Janowski, M. Grega, R. Cruz, M. Nunes, C. Patrikakis, Stavros Papapanagiotou

引用次数: 2

Energy-aware optimal resource allocation in MR-MC wireless networks MR-MC无线网络中能量感知的最优资源分配

2013 IEEE Globecom Workshops (GC Wkshps) Pub Date : 2013-12-01 DOI: 10.1109/GLOCOMW.2013.6855721

Lu Liu, Xianghui Cao, Y. Cheng

引用次数: 6

Pairwise error probability evaluation of cooperative mobile femtocells 协同移动飞基站的两两误差概率评估

2013 IEEE Globecom Workshops (GC Wkshps) Pub Date : 2013-12-01 DOI: 10.1109/GLOCOMW.2013.6855694

M. F. Feteiha, Mahmoud H. Qutqut, H. Hassanein

{"title":"Pairwise error probability evaluation of cooperative mobile femtocells","authors":"M. F. Feteiha, Mahmoud H. Qutqut, H. Hassanein","doi":"10.1109/GLOCOMW.2013.6855694","DOIUrl":"https://doi.org/10.1109/GLOCOMW.2013.6855694","url":null,"abstract":"Cellular subscribers while travelling in public transportation vehicles, such as streetcars and buses, often experience poor signal reception and low bandwidth when using their cellular devises onboard. Small cell deployment of, for example, femtocells is considered as one of the most promising solutions for cellular operators to enhance coverage and meet the increasing need for capacity and QoS support expected by cellular subscribers. We consider a mobile Femto Base Station (mobFBS) installed in the public transportation vehicle, with an external antenna installed on the roof, to offer enhanced coverage and improved capacity onboard. We investigate the performance gains of a communication scheme in downlink LTE-A networks with mobFBSs. Users are assumed to be travelling using a public transportation vehicle, and the transmission between macroBS and users occurs through a mobFBS. The associated wireless links for this type of fast mobility are characterized by a doubly-selective fading channel. This causes performance degradation in terms of increased error probability. By taking advantage of the more powerful central processing mobFBS, we make use of a precoded technique to overcome the performance degradation that results from the wireless fading channel. We investigate the performance gain in terms of pairwise error probability (PEP) via a derived closed-form expression. Our analytical and simulation results indicate that significant diversity gains are achievable and error rates are tremendously reduced.","PeriodicalId":174992,"journal":{"name":"2013 IEEE Globecom Workshops (GC Wkshps)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130722327","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: 9

BER of subcarrier MPSK/MDPSK modulated OWC systems in Gamma-Gamma turbulence 子载波MPSK/MDPSK调制OWC系统在伽马湍流中的误码率

2013 IEEE Globecom Workshops (GC Wkshps) Pub Date : 2013-12-01 DOI: 10.1109/GLOCOMW.2013.6825129

Xuegui Song, Julian Cheng, Mohamed-Slim Alouini

引用次数: 4

Performance evaluation of a tunnel sharing method for accommodating M2M communication to mobile cellular networks 用于容纳M2M通信到移动蜂窝网络的隧道共享方法的性能评估

2013 IEEE Globecom Workshops (GC Wkshps) Pub Date : 2013-12-01 DOI: 10.1109/GLOCOMW.2013.6824979

Shun-ich Sakurai, G. Hasegawa, N. Wakamiya, Takanori Iwai

{"title":"Performance evaluation of a tunnel sharing method for accommodating M2M communication to mobile cellular networks","authors":"Shun-ich Sakurai, G. Hasegawa, N. Wakamiya, Takanori Iwai","doi":"10.1109/GLOCOMW.2013.6824979","DOIUrl":"https://doi.org/10.1109/GLOCOMW.2013.6824979","url":null,"abstract":"Machine-to-Machine (M2M) communication has attracted considerable attention as a new communication paradigm that increases wireless network traffic. Since existing mobile cellular networks need to persistently maintain a tunnel for each mobile terminal in their core system, the number of concurrent tunnels increases dramatically when a large number of M2M devices are handled in mobile cellular networks large popularity. The small Average Revenue Per User (ARPU) of M2M terminals also has a strong impact on network cost. In this paper, we propose a tunnel sharing method to reduce the cost of accommodating M2M terminals to mobile cellular networks. In the proposed method, multiple terminals are aggregated as a group and share a single tunnel in the mobile core network. We also propose introduction of temporary tunnels to avoid call blocking caused by competition for a single tunnel among simultaneous calls. We evaluate the performance of the proposed method by mathematical analysis to examine its basic characteristics. We also estimate the monetary cost to realize the proposed method and reveal that it can reduce at 80% compared with traditional mobile core networks, while keeping the call blocking rate less than 0.1%.","PeriodicalId":174992,"journal":{"name":"2013 IEEE Globecom Workshops (GC Wkshps)","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132143641","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

Energy efficiency optimization based on interference alignment for device-to-device MIMO downlink underlaying cellular network 基于干扰对准的设备对设备MIMO下行蜂窝网络能效优化

2013 IEEE Globecom Workshops (GC Wkshps) Pub Date : 2013-12-01 DOI: 10.1109/GLOCOMW.2013.6825051

Jiamo Jiang, M. Peng, Wenbo Wang, Kecheng Zhang

{"title":"Energy efficiency optimization based on interference alignment for device-to-device MIMO downlink underlaying cellular network","authors":"Jiamo Jiang, M. Peng, Wenbo Wang, Kecheng Zhang","doi":"10.1109/GLOCOMW.2013.6825051","DOIUrl":"https://doi.org/10.1109/GLOCOMW.2013.6825051","url":null,"abstract":"This paper intends to adopt interference alignment (IA) for improving the energy efficiency (EE) of both the device-to-device (D2D) and cellular links in a D2D multiple-input and multiple-output (MIMO) downlink underlaying cellular network. Due to the strong cross-tier interference, the EE optimization problem becomes NP-hard and computationally difficult to solve. IA is implemented firstly to mitigate the cross-tier interference and decouple the problem into independent EE optimization for D2D and cellular links, and then an energy-efficient MIMO transmission scheme which further enhances the EE is proposed. Furthermore, via the nonlinear fractional programming and modified water-filling method, the closed-form expression of the achieved maximal EE for D2D link is derived while satisfying the IA conditions. Simulation results confirm that the EE of the proposed scheme approaches a peak value when both the maximum transmit power allowances of D2D and cellular links are large enough. Meanwhile, the system energy and spectrum efficiency can be improved significantly compared with the conventional interference cancelation in D2D underlay network.","PeriodicalId":174992,"journal":{"name":"2013 IEEE Globecom Workshops (GC Wkshps)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132445051","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

Angular diversity approach to indoor positioning using visible light 利用可见光进行室内定位的角度分集方法

2013 IEEE Globecom Workshops (GC Wkshps) Pub Date : 2013-12-01 DOI: 10.1109/GLOCOMW.2013.6825138

Michael T. Taylor, S. Hranilovic

引用次数: 30

Second order cone programming for robust localization in mobile sensor networks 移动传感器网络鲁棒定位的二阶锥规划

2013 IEEE Globecom Workshops (GC Wkshps) Pub Date : 2013-12-01 DOI: 10.1109/GLOCOMW.2013.6825187

G. N. Shirazi, L. Lampe

引用次数: 0