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2014 21st International Conference on Telecommunications (ICT)最新文献

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Downlink interference estimation without feedback for heterogeneous network interference avoidance 异构网络无反馈下行干扰估计
2014 21st International Conference on Telecommunications (ICT) Pub Date : 2014-03-31 DOI: 10.1109/ICT.2014.6845085
Siyi Wang, Weisi Guo, M. McDonnell
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引用次数: 10
Disaster recovery in wireless networks: A homology-based algorithm 无线网络中的灾难恢复:一种基于同构的算法
2014 21st International Conference on Telecommunications (ICT) Pub Date : 2014-03-21 DOI: 10.1109/ICT.2014.6845113
A. Vergne, I. Flint, L. Decreusefond, P. Martins
{"title":"Disaster recovery in wireless networks: A homology-based algorithm","authors":"A. Vergne, I. Flint, L. Decreusefond, P. Martins","doi":"10.1109/ICT.2014.6845113","DOIUrl":"https://doi.org/10.1109/ICT.2014.6845113","url":null,"abstract":"In this paper, we present an algorithm for the recovery of wireless networks after a disaster. Considering a damaged wireless network, presenting coverage holes or/and many disconnected components, we propose a disaster recovery algorithm which repairs the network. It provides the list of locations where to put new nodes in order to patch the coverage holes and mend the disconnected components. In order to do this we first consider the simplicial complex representation of the network, then the algorithm adds supplementary vertices in excessive number, and afterwards runs a reduction algorithm in order to reach an optimal result. One of the novelty of this work resides in the proposed method for the addition of vertices. We use a determinantal point process: the Ginibre point process which has inherent repulsion between vertices, and has never been simulated before for wireless networks representation. We compare both the determinantal point process addition method with other vertices addition methods, and the whole disaster recovery algorithm to the greedy algorithm for the set cover problem.","PeriodicalId":154328,"journal":{"name":"2014 21st International Conference on Telecommunications (ICT)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115134943","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: 10
Low-complexity transmission mode selection in MU-MIMO systems MU-MIMO系统中低复杂度传输模式选择
2014 21st International Conference on Telecommunications (ICT) Pub Date : 2014-03-18 DOI: 10.1109/ICT.2014.6845070
Haijing Liu, Hui Gao, Anzhong Hu, Tiejun Lv
{"title":"Low-complexity transmission mode selection in MU-MIMO systems","authors":"Haijing Liu, Hui Gao, Anzhong Hu, Tiejun Lv","doi":"10.1109/ICT.2014.6845070","DOIUrl":"https://doi.org/10.1109/ICT.2014.6845070","url":null,"abstract":"We propose a low-complexity transmission strategy in multi-user multiple-input multiple-output downlink systems. The adaptive strategy adjusts the precoding methods, denoted as the transmission mode, to improve the system sum rates while maintaining the number of simultaneously served users. Three linear precoding transmission modes are discussed, i.e., the block diagonalization zero-forcing, the cooperative zero-forcing (CZF), and the cooperative matched-filter (CMF). Considering both the number of data streams and the multiple-antenna configuration of users, we modify the common CZF and CMF modes by allocating data streams. Then, the transmission mode is selected between the modified ones according to the asymptotic sum rate analyses. As instantaneous channel state information is not needed for the mode selection, the computational complexity is significantly reduced. Numerical simulations confirm our analyses and demonstrate that the proposed scheme achieves substantial performance gains with very low computational complexity.","PeriodicalId":154328,"journal":{"name":"2014 21st International Conference on Telecommunications (ICT)","volume":"227 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131447087","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
A novel scheme for downlink opportunistic interference alignment 一种新的下行机会干扰对准方案
2014 21st International Conference on Telecommunications (ICT) Pub Date : 2014-03-16 DOI: 10.1109/ICT.2014.6845114
Haijing Liu, Hui Gao, Wei Long, Tiejun Lv
{"title":"A novel scheme for downlink opportunistic interference alignment","authors":"Haijing Liu, Hui Gao, Wei Long, Tiejun Lv","doi":"10.1109/ICT.2014.6845114","DOIUrl":"https://doi.org/10.1109/ICT.2014.6845114","url":null,"abstract":"In this paper we propose a downlink codebook-based opportunistic interference alignment (OIA) in a three-cell MIMO system. A codebook composed of multiple transmit vector sets is utilized to improve the multiuser selection diversity. The sum rate increases as the size of the codebook grows. In addition, during the user selection, effective channel gain and alignment metric are combined to generate a novel criterion, which improves the system performance, especially at low SNR. Furthermore, a threshold-based feedback approach is introduced to reduce the feedback load in the proposed scheme. Both the analytical results and simulations show that the proposed scheme provides significant improvement in terms of sum rates with no feedback load growth and slight increase of complexity.","PeriodicalId":154328,"journal":{"name":"2014 21st International Conference on Telecommunications (ICT)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132853033","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
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