2014 21st International Conference on Telecommunications (ICT)最新文献_第8页

Smartphone-based palmprint recognition system 基于智能手机的掌纹识别系统

2014 21st International Conference on Telecommunications (ICT) Pub Date : 2014-05-04 DOI: 10.1109/ICT.2014.6845158

Nuno Freire Moco, P. Correia

引用次数: 16

Mobile Cloud Networking: Virtualisation of cellular networks 移动云网络:蜂窝网络的虚拟化

2014 21st International Conference on Telecommunications (ICT) Pub Date : 2014-05-04 DOI: 10.1109/ICT.2014.6845149

G. Karagiannis, A. Jamakovic, A. Edmonds, Carlos Parada, Thijs Metsch, D. Pichon, M. Corici, S. Ruffino, A. Gomes, P. Crosta, T. Bohnert

引用次数: 37

Design and evaluation of multi-band RF energy harvesting circuits and antennas for WSNs 无线传感器网络多波段射频能量采集电路和天线的设计与评价

2014 21st International Conference on Telecommunications (ICT) Pub Date : 2014-05-04 DOI: 10.1109/ICT.2014.6845129

L. M. Borges, Norberto Barroca, Henrique M. Saraiva, Jorge Tavares, Paulo T. Gouveia, F. Velez, Caroline Loss, Rita Salvado, P. Pinho, R. Gonçalves, N. Carvalho, R. Chávez-Santiago, I. Balasingham

{"title":"Design and evaluation of multi-band RF energy harvesting circuits and antennas for WSNs","authors":"L. M. Borges, Norberto Barroca, Henrique M. Saraiva, Jorge Tavares, Paulo T. Gouveia, F. Velez, Caroline Loss, Rita Salvado, P. Pinho, R. Gonçalves, N. Carvalho, R. Chávez-Santiago, I. Balasingham","doi":"10.1109/ICT.2014.6845129","DOIUrl":"https://doi.org/10.1109/ICT.2014.6845129","url":null,"abstract":"Radio frequency (RF) energy harvesting is an emerging technology that will enable to drive the next generation of wireless sensor networks (WSNs) without the need of using batteries. In this paper, we present RF energy harvesting circuits specifically developed for GSM bands (900/1800) and a wearable dual-band antenna suitable for possible implementation within clothes for body worn applications. Besides, we address the development and experimental characterization of three different prototypes of a five-stage Dickson voltage multiplier (with match impedance circuit) responsible for harvesting the RF energy. Different printed circuit board (PCB) fabrication techniques to produce the prototypes result in different values of conversion efficiency. Therefore, we conclude that if the PCB fabrication is achieved by means of a rigorous control in the photo-positive method and chemical bath procedure applied to the PCB it allows for attaining better values for the conversion efficiency. All three prototypes (1, 2 and 3) can power supply the IRIS sensor node for RF received powers of -4 dBm, -6 dBm and -5 dBm, and conversion efficiencies of 20, 32 and 26%, respectively.","PeriodicalId":154328,"journal":{"name":"2014 21st International Conference on Telecommunications (ICT)","volume":"43 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":"126305903","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: 15

A service framework for emerging markets 面向新兴市场的服务框架

2014 21st International Conference on Telecommunications (ICT) Pub Date : 2014-05-04 DOI: 10.1109/ICT.2014.6845122

M. A. Khan

引用次数: 5

Positional proportional fairness scheduling based on spectrum aggregation in cognitive radio 认知无线电中基于频谱聚合的位置比例公平调度

2014 21st International Conference on Telecommunications (ICT) Pub Date : 2014-05-04 DOI: 10.1109/ICT.2014.6845103

Xuezhi Tan, Cong Yin, Lin Ma

引用次数: 6

From asia to europe: Short-term traffic flow prediction between continents 从亚洲到欧洲:大陆间的短期交通流量预测

2014 21st International Conference on Telecommunications (ICT) Pub Date : 2014-05-04 DOI: 10.1109/ICT.2014.6845123

Sevgi Kaya, Necati Kilic, T. Koçak, V. C. Gungor

引用次数: 4

Two-hop delay analysis in cognitive machine-to-machine networks with poisson point process model 基于泊松点过程模型的认知机器对机器网络的两跳延迟分析

2014 21st International Conference on Telecommunications (ICT) Pub Date : 2014-05-04 DOI: 10.1109/ICT.2014.7575073

Jing Gao, Changchuan Yin, Ran Cai

{"title":"Two-hop delay analysis in cognitive machine-to-machine networks with poisson point process model","authors":"Jing Gao, Changchuan Yin, Ran Cai","doi":"10.1109/ICT.2014.7575073","DOIUrl":"https://doi.org/10.1109/ICT.2014.7575073","url":null,"abstract":"End-to-end delay is an important metric for network performance. This paper studies the end-to-end delay in a two-hop Cognitive Machine-to-Machine (CM2M) network, where a pair of primary users (PUs) coexist with a secondary (SR) network with many two-hop line M2M communication links. The occupancy of the licensed channel by PUs is modelled as a continuous-time two-state (busy and idle) Markov process. Secondary (SR) network is composed of many two-hop line routes, each of which consists of a source node, a relay node and a destination. The locations of the source nodes are assumed to be the realizations of independent Poisson Point Process in each time slot. Secondary users (SUs) deploy a combination of TDMA and ALOHA medium access control (MAC) protocol. We first quantify the packet success probability for single-hop when the channel is idle for SUs, where the capture of a packet is determined by signal-to-interference ratio (SIR) experienced by the receiver. We then evaluate the delays of each hop (1st hop and 2nd hop delay) and the two-hop delay. Numerical results show that a better end-to-end performance could be obtained through proper network parameters settings. Simulation results verify the correctness of theoretical analysis.","PeriodicalId":154328,"journal":{"name":"2014 21st International Conference on Telecommunications (ICT)","volume":"8 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":"133923159","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

Cost/revenue performance in an IMT-Advanced scenario with Spectrum Aggregation over non-contiguous frequency bands 在非连续频带上具有频谱聚合的IMT-Advanced场景中的成本/收入性能

2014 21st International Conference on Telecommunications (ICT) Pub Date : 2014-05-04 DOI: 10.1109/ICT.2014.6845119

Jessica Acevedo Flores, F. Velez, O. Cabral, Daniel Robalo, O. Holland, H. Aghvami, Filippo Meucci, A. Mihovska, N. Prasad, R. Prasad

{"title":"Cost/revenue performance in an IMT-Advanced scenario with Spectrum Aggregation over non-contiguous frequency bands","authors":"Jessica Acevedo Flores, F. Velez, O. Cabral, Daniel Robalo, O. Holland, H. Aghvami, Filippo Meucci, A. Mihovska, N. Prasad, R. Prasad","doi":"10.1109/ICT.2014.6845119","DOIUrl":"https://doi.org/10.1109/ICT.2014.6845119","url":null,"abstract":"This paper determines the cost/revenue performance of a mobile communication system in an IMT-Advanced scenario with integrated Common Radio Resource Management (iCRRM). The iCRRM performs classic CRRM functionalities jointly with Spectrum Aggregation (SA), being able to switch users between non-contiguous frequency bands. The SA scheduling is obtained with an optimized General Multi-Band Scheduling (GMBS) algorithm with the aim of cell throughput maximization. In particular, we investigate the dependence of the throughput on the cell coverage distance for the allocation of users over the 2 and 5 GHz bands for a single operator scenario under a constant average Signal to Interference-plus-Noise Ratio (SINR), for the same type of Radio Access Technology and both frequency bands. The operator has the availability of a non-shared 2 GHz band and has access to part (or all) of a shared frequency band at 5 GHz. An almost constant gain near 30 % was obtained with the proposed optimal solution compared to a system where users are first allocated in one of the two bands and later not able to handover between the bands. It is shown that the profit in percentage terms decreases as the cell radius increases. These results allow for evaluating the impact of the revenue from the channel in the total revenue and in the profit, defined as the difference between revenues and costs, in percentage. Maximum profits of about 1270, 585 and 240 % have been obtained for prices of 0.10, 0.05 and 0.025 €/MByte, respectively, when iCRRM is employed, while profits of 990, 440, and 170 % have been reached with no iCRRM, i.e., simple CRRM. Finally, an energy efficiency strategy is proposed and analyzed, showing that there is significant transmission power saving potential through the opportunistic reallocation scheme.","PeriodicalId":154328,"journal":{"name":"2014 21st International Conference on Telecommunications (ICT)","volume":"11 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":"115338019","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: 4

MAP decoder for physical-layer network coding using lattice sphere decoding MAP解码器为物理层网络编码，采用点阵球解码

2014 21st International Conference on Telecommunications (ICT) Pub Date : 2014-05-04 DOI: 10.1109/ICT.2014.6845082

Asma Mejri, G. R. Othman

引用次数: 3

IEEE1451.4 multi-sensing platform for wheelchair users assessment 用于轮椅使用者评估的IEEE1451.4多传感平台

2014 21st International Conference on Telecommunications (ICT) Pub Date : 2014-05-04 DOI: 10.1109/ICT.2014.6845074

J. Freire, O. Postolache, P. Girão

引用次数: 0