2014 21st International Conference on Telecommunications (ICT)最新文献_第3页

Adaptive user association in HetNets with renewable energy powered base stations 基于可再生能源基站的HetNets自适应用户关联

2014 21st International Conference on Telecommunications (ICT) Pub Date : 2014-05-04 DOI: 10.1109/ICT.2014.6845087

Dantong Liu, Yue Chen, K. K. Chai, Tiankui Zhang, Chengkang Pan

{"title":"Adaptive user association in HetNets with renewable energy powered base stations","authors":"Dantong Liu, Yue Chen, K. K. Chai, Tiankui Zhang, Chengkang Pan","doi":"10.1109/ICT.2014.6845087","DOIUrl":"https://doi.org/10.1109/ICT.2014.6845087","url":null,"abstract":"In this paper, we propose adaptive user association in the Heterogeneous Networks (HetNets) with renewable energy powered base stations (BSs), where all the BSs are assumed solely powered by the harvested energy from the renewable energy sources. BSs across tiers differ in terms of energy harvesting rate, maximum transmit power and deployment density. In conventional grid-powered HetNets, user association is determined based on the assumption that all the BSs can transmit with constant powers, whereas the transmit powers of BSs vary in the HetNets with renewable energy powered BSs. The adaptive user association is formulated as an optimization problem which aims to maximize the number of accepted user equipments (UEs) and minimize the radio resource consumption in the scenario where the available energy of BSs is dependent on the harvested energy in a certain period of time. We first propose an optimal offline algorithm, where the gradient descent method is used to achieve the pseudo-optimal user association solution. The performance of proposed gradient descent based user association algorithm is verified by simulation results. Considering practical implementation, we further propose a heuristic online user association algorithm which is capable of making timely user association decision for the incoming UEs based on remaining available network resources. Simulation result indicates the proposed online algorithm achieves good tradeoff between UEs acceptance ratio and association delay.","PeriodicalId":154328,"journal":{"name":"2014 21st International Conference on Telecommunications (ICT)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115946404","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: 29

Symbol error rate comparisons of star MQAM schemes based on equal cubic metric 基于等立方度量的星型MQAM方案的符号错误率比较

2014 21st International Conference on Telecommunications (ICT) Pub Date : 2014-05-04 DOI: 10.1109/ICT.2014.6845141

Lu Yu, Tiankui Zhang, Chunyan Feng, Yao Lu, Xiao Han

引用次数: 2

Optimizing packet scheduling decisions with network coding 优化数据包调度决策与网络编码

2014 21st International Conference on Telecommunications (ICT) Pub Date : 2014-05-04 DOI: 10.1109/ICT.2014.6845081

Jin Wang, T. Chai, L. Wong

引用次数: 1

A low-complexity resource allocation scheme using AMC for MIMO-OFDMA systems 基于AMC的MIMO-OFDMA系统低复杂度资源分配方案

2014 21st International Conference on Telecommunications (ICT) Pub Date : 2014-05-04 DOI: 10.1109/ICT.2014.6845100

W. B. Hassen, Mériem Afif, S. Tabbane

引用次数: 1

QoS-aware energy-efficient power control in two-tier femtocell networks based on Q-learning 基于q学习的两层飞蜂窝网络qos感知节能功率控制

2014 21st International Conference on Telecommunications (ICT) Pub Date : 2014-05-04 DOI: 10.1109/ICT.2014.6845130

Zhicai Zhang, X. Wen, Zhengfu Li, Shenghua He, Wenpeng Jing, Jun Zhao

引用次数: 4

PAPR reduction in FBMC systems using a smart gradient-project active constellation extension method 基于智能梯度-项目主动星座扩展方法的FBMC系统PAPR降低

2014 21st International Conference on Telecommunications (ICT) Pub Date : 2014-05-04 DOI: 10.1109/ICT.2014.6845095

Nuan van der Neut, B. T. Maharaj, Frederick H. de Lange, Gustavo J. González, F. Gregorio, J. Cousseau

{"title":"PAPR reduction in FBMC systems using a smart gradient-project active constellation extension method","authors":"Nuan van der Neut, B. T. Maharaj, Frederick H. de Lange, Gustavo J. González, F. Gregorio, J. Cousseau","doi":"10.1109/ICT.2014.6845095","DOIUrl":"https://doi.org/10.1109/ICT.2014.6845095","url":null,"abstract":"The filter bank multicarrier (FBMC) modulation scheme has recently seen renewed interest and is being considered as a viable alternative to orthogonal frequency division multiplexing (OFDM). FBMC, however suffers from the same high peak-to-average power ratio (PAPR) drawback as OFDM systems. Conventional OFDM PAPR reduction techniques cannot be directly applied to FBMC due to the overlapping nature of FBMC symbols. A novel technique is proposed based on an evolution of the smart-gradient project active constellation extension (SGP-ACE) PAPR reduction method used for OFDM systems, namely the FBMC SGP-ACE method. The proposed method is applied to a set of contiguous FBMC symbols, thereby compensating for the overlapping nature of FBMC modulation. The proposed method requires less iterations than a projection-onto-convex-sets (POCS) ACE approach to converge to a lower PAPR and significant reduction in complexity can be achieved as opposed to current FBMC PAPR reduction techniques which tend to require the addition of advanced signal processing. The proposed FBMC SGP-ACE method outperforms a conventional FBMC POCS-ACE method by 2.6dB in PAPR reduction at a clip probability of 10-4 on the 1st iteration.","PeriodicalId":154328,"journal":{"name":"2014 21st International Conference on Telecommunications (ICT)","volume":"110 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128000014","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: 27

Concurrent mobility load balancing in LTE self-organized networks LTE自组织网络中的并发移动负载均衡

2014 21st International Conference on Telecommunications (ICT) Pub Date : 2014-05-04 DOI: 10.1109/ICT.2014.6845125

Chungang Yang

{"title":"Concurrent mobility load balancing in LTE self-organized networks","authors":"Chungang Yang","doi":"10.1109/ICT.2014.6845125","DOIUrl":"https://doi.org/10.1109/ICT.2014.6845125","url":null,"abstract":"Mobility load balancing (MLB) is an important use case in the long term evolution (LTE) self-optimized networks (SON). To combat the potential Ping-Pong load transfer and low convergence issues, we propose a concurrent MLB (CLB) scheme to solve out the asymmetry traffic distribution among multiple cells and the potential hidden-cell problem. CLB is implemented among multiple source and target cells, which can be regarded as a load redistribution game among them. Here, source cells are referred to as the sellers since they have excess load, and target cells as the buyers since they can absorb more load from the sellers. However, the gaming implementation complexity of such CLB is very high and the overhead is too heavy due to onetime trigger of CLB always involving multiple cells. Also, this situation is further challenged by the large-scale deployment of multiple cells in a specific region. Therefore, we further propose an irregular CLB (termed as ICLB) scheme, which overcomes the shortage of CLB of all associated cells who taking part. For ICLB, we denote the cell selection mechanism in detail. Simulation results show that both CLB and ICLB algorithms can overcome Ping-Pong load balancing problem. Meanwhile, the load distribution is more balancing than that of conventional MLB, and the performance of average blocking probability and the number of unsatisfied users are improved significantly.","PeriodicalId":154328,"journal":{"name":"2014 21st International Conference on Telecommunications (ICT)","volume":"298 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122504159","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

Spam Trapping System: Novel security framework to fight against spam botnets 垃圾邮件捕获系统:对抗垃圾邮件僵尸网络的新型安全框架

2014 21st International Conference on Telecommunications (ICT) Pub Date : 2014-05-04 DOI: 10.1109/ICT.2014.6845160

A. Derhab, A. Bouras, F. B. Muhaya, M. Khan, Yang Xiang

引用次数: 4

Polarization-enabled spectrum opportunities made practical: Polarization Mode Dispersion and learning-throughput tradeoff 使偏振频谱机会成为现实:偏振模式色散和学习吞吐量权衡

2014 21st International Conference on Telecommunications (ICT) Pub Date : 2014-05-04 DOI: 10.1109/ICT.2014.6845120

Dongming Li, Caili Guo, Xiaolin Lin, Rong Qiao

{"title":"Polarization-enabled spectrum opportunities made practical: Polarization Mode Dispersion and learning-throughput tradeoff","authors":"Dongming Li, Caili Guo, Xiaolin Lin, Rong Qiao","doi":"10.1109/ICT.2014.6845120","DOIUrl":"https://doi.org/10.1109/ICT.2014.6845120","url":null,"abstract":"Polarization-enabled Spectrum Sharing (PSS) that exploits the spectrum opportunities in polarization domain is deployed to balance between avoiding interference at the incumbent receiver and optimizing the throughput of secondary user. However, when it comes to wideband environments, PSS is impaired by the frequency-dependent Polarization Mode Dispersion (PMD) effect, thus the spectrum efficiency of PSS drops. Different from previous studies on PSS without taking the frequency-dependent depolarization effect into consideration, this work firstly analyzes the PMD effect and then proposes a cluster-based PSS approach to enable PSS on a narrower frequency span for LTE user. Since the width of the frequency span impacts both the environment learning time overhead and the PMD effect suffered by PSS, we analytically incorporate the PMD effect into LTE throughput and the interference at the incumbent receiver. By this means, the optimal number of subcarriers is derived to maximize the effective throughput for LTE users, subject to the interference power constraint at the incumbent receiver.","PeriodicalId":154328,"journal":{"name":"2014 21st International Conference on Telecommunications (ICT)","volume":"234 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120941869","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

Comparison of LED and RSOA performance in WDM-PONs WDM-PONs中LED和RSOA性能的比较

2014 21st International Conference on Telecommunications (ICT) Pub Date : 2014-05-04 DOI: 10.1109/ICT.2014.6845093

Luiz Fernando Henning, P. Monteiro, A. Pohl

引用次数: 4