2017 IEEE International Conference on Communications Workshops (ICC Workshops)最新文献_第6页

Design of low-latency uplink MAC scheduling for Massive MIMO-OFDM systems 大规模MIMO-OFDM系统的低延迟上行MAC调度设计

2017 IEEE International Conference on Communications Workshops (ICC Workshops) Pub Date : 2017-05-21 DOI: 10.1109/ICCW.2017.7962729

Min Huang, Fangfang Yuan, Hong Cheng, Xu Zhang

{"title":"Design of low-latency uplink MAC scheduling for Massive MIMO-OFDM systems","authors":"Min Huang, Fangfang Yuan, Hong Cheng, Xu Zhang","doi":"10.1109/ICCW.2017.7962729","DOIUrl":"https://doi.org/10.1109/ICCW.2017.7962729","url":null,"abstract":"Massive MIMO is a promising technology for 5G due to its huge extended multi-user spatial multiplexing and beamforming capability, but its high complexity makes the associated MAC scheduling suffer from long processing time in practice. To solve such problem, this paper designs a low-latency uplink MAC scheduling scheme for Massive MIMO-OFDM systems. Specifically, first, a framework enabling processing parallelization is put forward in which the scheduling for multiple resource blocks (RB) are executed concurrently with the common pre-processing and post-processing. Second, a power-based weight is introduced into the per-RB scheduling, by which the link adaptation could be completed simultaneously with per-RB processing, no longer requiring reduplicate post-scheduling processing. Third, a low-complexity calculation method is applied to the per-layer recursive user selection algorithm for each RB, in which the matrix inversion is substituted by the recursion with vector inner-productions based on Hermitian Matrix Blockwise Inversion Lemma. Finally, performance simulation results demonstrate that the designed MAC scheduling scheme outperforms random scheduling in terms of both cell sum throughput and cell edge throughput.","PeriodicalId":6656,"journal":{"name":"2017 IEEE International Conference on Communications Workshops (ICC Workshops)","volume":"55 1","pages":"632-638"},"PeriodicalIF":0.0,"publicationDate":"2017-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76651177","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

Satellite-enabled LTE systems in LEO constellations 低轨道星座的卫星LTE系统

2017 IEEE International Conference on Communications Workshops (ICC Workshops) Pub Date : 2017-05-21 DOI: 10.1109/ICCW.2017.7962769

A. Guidotti, A. Vanelli-Coralli, Màrius Caus, J. Bas, G. Colavolpe, T. Foggi, S. Cioni, Andrea Modenini, D. Tarchi

引用次数: 60

Energy utilization concerned sleep scheduling in Wireless Powered Communication Networks 无线供电通信网络中涉及睡眠调度的能量利用

2017 IEEE International Conference on Communications Workshops (ICC Workshops) Pub Date : 2017-05-21 DOI: 10.1109/ICCW.2017.7962717

Wei Fang, M. Mukherjee, Lei Shu, Zhangbing Zhou, G. Hancke

{"title":"Energy utilization concerned sleep scheduling in Wireless Powered Communication Networks","authors":"Wei Fang, M. Mukherjee, Lei Shu, Zhangbing Zhou, G. Hancke","doi":"10.1109/ICCW.2017.7962717","DOIUrl":"https://doi.org/10.1109/ICCW.2017.7962717","url":null,"abstract":"Wireless Powered Communication Networks (WPCN) is one of the promising approaches to extend the lifetime of the energy-constrained wireless networks such as Wireless Sensor Networks (WSNs). With the advancement in energy harvesting in terms of Wireless Energy Transmission (WET), WPCN overcomes the problem of replacing fixed energy sources such as batteries in difficult access areas of industrial networks. However, residual energy along with harvested energy is not always enough to support the data transmission in IWSNs. This article introduces a energy utilization concerned sleep scheduling in WPCNs with an aim to balance network demands and residual energy with harvested energy. In the proposed scheme, when the harvested energy combined with residual energy is less than the energy consumption due to data transmission, then the sensor node goes to sleep-state in order to prevent death acceleration. As the sleep node obtains enough energy, this node goes to active-state in next epoch if the network demand increases. Finally, a trade-off between the time to harvesting energy and data transmission is obtained through extensive simulation.","PeriodicalId":6656,"journal":{"name":"2017 IEEE International Conference on Communications Workshops (ICC Workshops)","volume":"22 1","pages":"558-563"},"PeriodicalIF":0.0,"publicationDate":"2017-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74432693","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

An enhanced Tomlinson-Harashima precoding scheme for high-order MU-MIMO transmissions in 5G networks 5G网络中用于高阶MU-MIMO传输的增强Tomlinson-Harashima预编码方案

2017 IEEE International Conference on Communications Workshops (ICC Workshops) Pub Date : 2017-05-21 DOI: 10.1109/ICCW.2017.7962660

Xin Wang, Xiaolin Hou, Huiling Jiang, Lan Chen

{"title":"An enhanced Tomlinson-Harashima precoding scheme for high-order MU-MIMO transmissions in 5G networks","authors":"Xin Wang, Xiaolin Hou, Huiling Jiang, Lan Chen","doi":"10.1109/ICCW.2017.7962660","DOIUrl":"https://doi.org/10.1109/ICCW.2017.7962660","url":null,"abstract":"We propose a novel transmission scheme based on Tomlinson-Harashima precoding (THP) that serves as a practical downlink multi-user (MU) MIMO transmission scheme for future radio access networks. The transmission of reference signals (RSs) is an issue of THP because the modulo operation during the interference cancellation introduces ambiguities to the channel estimation if it is applied on RSs. Without the modulo operation, the power of RS symbols becomes uncontrollable which degrades the performance due to the transmission power constraints in practical systems. An existing solution is to use orthogonal resources to transmit RSs without interference cancellation, which increases the RS overhead especially for high-order MU-MIMO transmissions. We propose an enhanced precoding scheme that uses phase rotation to control the power of the RSs during the THP process and thus control the power of the RS symbols. Therefore, the loss in transmission power due to practical power constraints is less than that for legacy approaches, and the use of orthogonal resources is not needed to transmit the RS symbols. In practical application, a fast phase search method is introduced to find the feasible angles for the phase rotation with low complexity. Simulations show that the proposed scheme is superior to legacy processing schemes with respect to the bit error rate.","PeriodicalId":6656,"journal":{"name":"2017 IEEE International Conference on Communications Workshops (ICC Workshops)","volume":"4 1","pages":"217-221"},"PeriodicalIF":0.0,"publicationDate":"2017-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79853460","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

Multi-cell VLC: Multi-user downlink capacity with coordinated precoding 多小区VLC:具有协调预编码的多用户下行容量

2017 IEEE International Conference on Communications Workshops (ICC Workshops) Pub Date : 2017-05-21 DOI: 10.1109/ICCW.2017.7962702

Thanh V. Pham, H. L. Minh, A. Pham

{"title":"Multi-cell VLC: Multi-user downlink capacity with coordinated precoding","authors":"Thanh V. Pham, H. L. Minh, A. Pham","doi":"10.1109/ICCW.2017.7962702","DOIUrl":"https://doi.org/10.1109/ICCW.2017.7962702","url":null,"abstract":"This paper studies the multi-user performance of multi-cell visible light communication (VLC) systems with coordinated precoding among cells. Practically, separated LED arrays are employed to properly illuminate a large room/office. This configuration enables a multi-cell VLC system, which is analogous to that in mobile cellular networks. In such multi-cell systems supporting multiple users, the received signal at a user can severely be degraded not only by the interference caused by the signals that are intended to other users within the cell (intra-cell interference) but also by interference from signals of the other cells (inter-cell interference). In order to remove these interferences, we propose a coordinated precoding technique which allows coordination between VLC cells. We then investigate the optimal precoding matrix design to maximize the achievable sum capacity of users. The maximization problem is formulated as a convex optimization problem which can be solved efficiently by using standard software packages. Numerical results show that the proposed coordinated precoding outperforms the non-coordinated one.","PeriodicalId":6656,"journal":{"name":"2017 IEEE International Conference on Communications Workshops (ICC Workshops)","volume":"7 1","pages":"469-474"},"PeriodicalIF":0.0,"publicationDate":"2017-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80036840","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

Flexible dynamic coordinated scheduling in virtual-RAN deployments 虚拟ran部署中的灵活动态协调调度

2017 IEEE International Conference on Communications Workshops (ICC Workshops) Pub Date : 2017-05-21 DOI: 10.1109/ICCW.2017.7962645

N. Iardella, G. Nardini, G. Stea, A. Virdis, A. Frangioni, L. Galli, D. Sabella, Francesco Mauro, G. Dell'Aera, M. Caretti

引用次数: 8

In-node cognitive power control in Wireless Sensor Networks 无线传感器网络节点内认知功率控制

2017 IEEE International Conference on Communications Workshops (ICC Workshops) Pub Date : 2017-05-21 DOI: 10.1109/ICCW.2017.7962805

M. Chincoli, A. Liotta

引用次数: 4

WOLA processing: A useful tool for windowed waveforms in 5G with relaxed synchronicity WOLA处理:一个有用的工具，用于在5G中具有轻松同步性的窗口波形

2017 IEEE International Conference on Communications Workshops (ICC Workshops) Pub Date : 2017-05-21 DOI: 10.1109/ICCW.2017.7962689

Y. Medjahdi, R. Zayani, H. Shaiek, D. Roviras

引用次数: 19

On the impact of beamforming strategy on mm-wave localization performance limits 波束形成策略对毫米波定位性能限制的影响

2017 IEEE International Conference on Communications Workshops (ICC Workshops) Pub Date : 2017-05-21 DOI: 10.1109/ICCW.2017.7962758

Anna Guerra, Francesco Guidi, D. Dardari

引用次数: 13

3D channel propagation in an indoor scenario with Tx rooftop & wall at 3.5 & 6 GHz 在3.5 GHz和6 GHz的屋顶和墙壁的室内场景中进行3D信道传播

2017 IEEE International Conference on Communications Workshops (ICC Workshops) Pub Date : 2017-05-21 DOI: 10.1109/ICCW.2017.7962694

Yawei Yu, Jian-hua Zhang, Xinzhuang Zhang, Yu Zhang

引用次数: 0