2015 IEEE International Conference on Communication Workshop (ICCW)最新文献_第6页

Performance analysis of relay-aided heterogeneous networks with interference cancellation 干扰消除中继辅助异构网络的性能分析

2015 IEEE International Conference on Communication Workshop (ICCW) Pub Date : 2015-06-08 DOI: 10.1109/ICCW.2015.7247304

Kang Song, Baofeng Ji, Yongming Huang, Ming Xiao, Shi Jin, Luxi Yang

引用次数: 1

Channel estimation via oblique matching pursuit for FDD massive MIMO downlink 基于倾斜匹配跟踪的FDD海量MIMO下行信道估计

2015 IEEE International Conference on Communication Workshop (ICCW) Pub Date : 2015-06-08 DOI: 10.1109/ICCW.2015.7247317

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

引用次数: 8

CooperativeQ: Energy-efficient channel access based on cooperative reinforcement learning CooperativeQ:基于合作强化学习的节能通道访问

2015 IEEE International Conference on Communication Workshop (ICCW) Pub Date : 2015-06-08 DOI: 10.1109/ICCW.2015.7247603

M. Emre, Gürkan Gür, S. Bayhan, Fatih Alagöz

{"title":"CooperativeQ: Energy-efficient channel access based on cooperative reinforcement learning","authors":"M. Emre, Gürkan Gür, S. Bayhan, Fatih Alagöz","doi":"10.1109/ICCW.2015.7247603","DOIUrl":"https://doi.org/10.1109/ICCW.2015.7247603","url":null,"abstract":"Cognitive Radio (CR) with the capability of discovering the unused spectrum promises higher spectrum efficiency - a pressing requirement for 5G networks. However, CR owes this capability to power-hungry tasks, most particularly to spectrum sensing. Given that advances in battery capacity has a slower pace compared to advances in device capabilities and traffic growth, it is paramount to develop energy-efficient CR protocols. To this end, we focus on spectrum sensing and access from an energy efficiency perspective. Our proposal CooperativeQ lets each CR decide with an energy efficiency objective on its actions based on its buffer occupancy, buffer capacity, and its observations about the primary channel states. Different than traditional reinforcement learning, CooperativeQ facilitates CRs to share their local knowledge with others periodically. With this information, CR chooses which action to take for the current time slot: (i) idling, (ii) sensing, and (iii) if channel is decided to be idle adapting transmission power to one of the power levels. We evaluate the performance of our proposal under various PU channel types, idling penalty coefficient, and information sharing period. Our results show that CooperativeQ outperforms greedy throughput-maximizing approach or a random channel selection owing to its adaptation and learning capability as well as cooperative mode of operation.","PeriodicalId":6464,"journal":{"name":"2015 IEEE International Conference on Communication Workshop (ICCW)","volume":"131 1","pages":"2799-2805"},"PeriodicalIF":0.0,"publicationDate":"2015-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73762645","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

Beamforming and interference cancellation schemes for D2D communications D2D通信的波束形成和干扰消除方案

2015 IEEE International Conference on Communication Workshop (ICCW) Pub Date : 2015-06-08 DOI: 10.1109/ICCW.2015.7247248

Yiyang Ni, Shi Jin, Wei Xu, M. Matthaiou, S. Shao, Hongbo Zhu

{"title":"Beamforming and interference cancellation schemes for D2D communications","authors":"Yiyang Ni, Shi Jin, Wei Xu, M. Matthaiou, S. Shao, Hongbo Zhu","doi":"10.1109/ICCW.2015.7247248","DOIUrl":"https://doi.org/10.1109/ICCW.2015.7247248","url":null,"abstract":"We investigate device-to-device (D2D) communication underlaying cellular networks with M-antenna base stations. We consider both beamforming (BF) and interference cancellation (IC) strategies under quantized channel state information (CSI), as well as, perfect CSI. We derive tight closed-form approximations of the ergodic achievable rate which hold for arbitrary transmit power, location of users and number of antennas. Based on these approximations, we derive insightful asymptotic expressions for three special cases namely high signal-to-noise (SNR), weak interference, and large M. In particular, we show that in the high SNR regime a ceiling effect exists which depends on the received signal-to-interference ratio and the number of antennas. Moreover, the achievable rate scales logarithmically with M. The ergodic achievable rate is shown to scale logarithmically with SNR and the antenna number in the weak interference case. When the BS is equipped with large number of antennas, we find that the ergodic achievable rate under quantized CSI reaches a saturated value, whilst it scales as log2M under perfect CSI.","PeriodicalId":6464,"journal":{"name":"2015 IEEE International Conference on Communication Workshop (ICCW)","volume":"76 1","pages":"608-613"},"PeriodicalIF":0.0,"publicationDate":"2015-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79263931","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

Efficiency analysis of downlink and uplink decoupling in heterogeneous networks 异构网络下行和上行解耦的效率分析

2015 IEEE International Conference on Communication Workshop (ICCW) Pub Date : 2015-06-08 DOI: 10.1109/ICCW.2015.7247166

Katerina Smiljkovikj, L. Gavrilovska, P. Popovski

引用次数: 26

On the trade-off between handover failure and small cell utilization in heterogeneous networks 异构网络中切换失败与小蜂窝利用率的权衡

2015 IEEE International Conference on Communication Workshop (ICCW) Pub Date : 2015-06-08 DOI: 10.1109/ICCW.2015.7247521

Jungmin Moon, Jungsoo Jung, Sungjin Lee, Anshuman Nigam, Sunheui Ryoo

引用次数: 14

Localization method for device-to-device through user movement 通过用户移动实现设备到设备的本地化方法

2015 IEEE International Conference on Communication Workshop (ICCW) Pub Date : 2015-06-08 DOI: 10.1109/ICCW.2015.7247279

The Dang Huynh, Chung Shue Chen, Siu-Wai Ho

引用次数: 2

On the benefits of time-varying routing in realistic mobile backhaul networks 时变路由在实际移动回程网络中的优势

2015 IEEE International Conference on Communication Workshop (ICCW) Pub Date : 2015-06-08 DOI: 10.1109/ICCW.2015.7247155

J. Lessmann, Yong Cheng, Stefan Pfeiffer, X. Costa

引用次数: 0

Multi-tiers route design coordinating QoS-specific K shortest paths over optical network 在光网络上协调qos专用K最短路径的多层路由设计

2015 IEEE International Conference on Communication Workshop (ICCW) Pub Date : 2015-06-08 DOI: 10.1109/ICCW.2015.7247393

H. Tode, Masashi Takada, Y. Tanigawa

{"title":"Multi-tiers route design coordinating QoS-specific K shortest paths over optical network","authors":"H. Tode, Masashi Takada, Y. Tanigawa","doi":"10.1109/ICCW.2015.7247393","DOIUrl":"https://doi.org/10.1109/ICCW.2015.7247393","url":null,"abstract":"In the Wavelength Division Multiplexing (WDM) based optical circuit switching network, it takes longer time to set up the intermediate optical cross-connecting devices on the route. Thus, pre-computed routing approaches are desirable to instantly set up the connection. Most of their research works are based on the K Shortest Path (KSP) algorithm or it's variants considering route disjointness, because of load balancing effect in network, its simplicity, and quick response caused by heuristic approach. However, it essentially remains some issues to be solved, especially on the capability for various QoS support and fairer load balancing. In particular, the set of K shortest paths independently selected between any two nodes is insufficient for entire network load balancing. Specifically, sequential selection of the K routes for each source-destination (S-D) pair causes the unfairness and unbalance in network load among all S-D pairs. In the paper, to tackle the above problems, we propose multi-tiers route design method, which provides more enhanced load balancing by selecting QoS specific multiple routes for each node pair, coordinating with the routes for other node pairs. The proposed method is not the improvement of the KSP algorithm and it's variants themselves, but the framework to find a limited number (K') of adequate paths from the K (K' ≤ K) routes pre-computed by KSP based algorithms for each S-D pair and each QoS level, taking spatial relationship between routes into account. Thus, the proposed method has complementary relationship with the KSP based algorithms themselves.","PeriodicalId":6464,"journal":{"name":"2015 IEEE International Conference on Communication Workshop (ICCW)","volume":"18 1","pages":"1509-1514"},"PeriodicalIF":0.0,"publicationDate":"2015-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79821704","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: 0

Applying backpressure to balance resource usage in software-defined wireless backhauls 应用反压力平衡软件定义无线回传中的资源使用

2015 IEEE International Conference on Communication Workshop (ICCW) Pub Date : 2015-06-08 DOI: 10.1109/ICCW.2015.7247071

J. Baranda, José Núñez-Martínez, J. Mangues‐Bafalluy

{"title":"Applying backpressure to balance resource usage in software-defined wireless backhauls","authors":"J. Baranda, José Núñez-Martínez, J. Mangues‐Bafalluy","doi":"10.1109/ICCW.2015.7247071","DOIUrl":"https://doi.org/10.1109/ICCW.2015.7247071","url":null,"abstract":"The expected higher complexity of upcoming 5G wireless backhauls suggests the need to evolve towards a software defined networking (SDN) paradigm to increase the degree of programmability of these networks. Within the context of software defined wireless backhaul, one important issue is the provision of an even resource consumption of both network and IT resources. Backpressure policies have shown their ability to balance resource consumption in traditional (non-SDN) wireless backhauls. This paper analyzes two use cases in which backpressure policies can be integrated in software-defined wireless backhaul to manage network and IT resources. The first use case proposes an SDN application based on a centralized backpressure policy to balance network resources in the wireless backhaul. Simulation results reveal how the granularity of routing decisions in the SDN application significantly affects the data plane performance, suggesting a trade-off between data plane performance and overload in the control plane. The second use case proposes a distributed backpressure policy to deal with the management of computing resources by balancing the processing load caused by OpenFlow (OF) switch requests among the available distributed SDN controllers. Simulation results demonstrate how a dynamic and distributed backpressure policy can balance the processing load amongst different SDN controllers, hence, leading to significant improvements with respect to static mapping policies.","PeriodicalId":6464,"journal":{"name":"2015 IEEE International Conference on Communication Workshop (ICCW)","volume":"55 1","pages":"31-36"},"PeriodicalIF":0.0,"publicationDate":"2015-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79847430","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