2012 19th International Conference on Telecommunications (ICT)最新文献_第3页

Probabilistic flooding coverage analysis in large scale wireless networks 大规模无线网络的概率泛洪覆盖分析

2012 19th International Conference on Telecommunications (ICT) Pub Date : 2012-04-23 DOI: 10.1109/ICTEL.2012.6221290

K. Oikonomou, George Koufoudakis, S. Aïssa

{"title":"Probabilistic flooding coverage analysis in large scale wireless networks","authors":"K. Oikonomou, George Koufoudakis, S. Aïssa","doi":"10.1109/ICTEL.2012.6221290","DOIUrl":"https://doi.org/10.1109/ICTEL.2012.6221290","url":null,"abstract":"Information dissemination is a challenging problem in modern wireless networks in which unnecessary transmissions waste valuable resources. Approaches like traditional flooding, are not suitable in these typically large scale and inherently dynamic environments due to the large number of messages transmitted in the network. Probabilistic flooding has been proposed as a suitable alternative, capable of pruning unnecessary transmissions, while at the same time maintaining a large proportion of the network nodes covered. In this approach, the main analysis objective is on the particular threshold probability, for which the number of messages is minimized and almost all network nodes receive the initial piece of information. The analysis proposed in this paper results in a tractable analytical expression regarding coverage, in the form of a polynomial. Studying its roots: (i) results existing in the open literature are confirmed; and (ii) new and tighter boundaries for the threshold probability are derived. Simulation results confirm the analytical findings and in addition, they demonstrate that the obtained boundaries are suitable for achieving high coverage when probabilistic flooding is employed.","PeriodicalId":413534,"journal":{"name":"2012 19th International Conference on Telecommunications (ICT)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127199954","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

Indoor localization using polar intervals in wireless sensor networks 无线传感器网络中基于极间隔的室内定位

2012 19th International Conference on Telecommunications (ICT) Pub Date : 2012-04-23 DOI: 10.1109/ICTEL.2012.6221222

F. Mourad, P. Honeine, H. Snoussi

引用次数: 1

Cedar: An optimized network-aware solution for P2P video multicast Cedar:一个优化的P2P视频多播网络感知解决方案

2012 19th International Conference on Telecommunications (ICT) Pub Date : 2012-04-23 DOI: 10.1109/ICTEL.2012.6221262

E. Mora, C. Greco, B. Pesquet-Popescu, Marco Cagnazzo, J. Farah

引用次数: 3

Cache management using temporal pattern based solicitation for content delivery 使用基于时间模式的请求进行内容交付的缓存管理

2012 19th International Conference on Telecommunications (ICT) Pub Date : 2012-04-23 DOI: 10.1109/ICTEL.2012.6221225

D. Marinca, Ali Hamieh, D. Barth, K. Khawam, D. D. Vleeschauwer, Yannick Le Louédec

引用次数: 5

Further results on Bayesian and deterministic CRBs in the context of blind SIMO channel estimation 盲SIMO信道估计中贝叶斯和确定性crb的进一步结果

2012 19th International Conference on Telecommunications (ICT) Pub Date : 2012-04-23 DOI: 10.1109/ICTEL.2012.6221253

Samir-Mohamad Omar, D. Slock, O. Bazzi

{"title":"Further results on Bayesian and deterministic CRBs in the context of blind SIMO channel estimation","authors":"Samir-Mohamad Omar, D. Slock, O. Bazzi","doi":"10.1109/ICTEL.2012.6221253","DOIUrl":"https://doi.org/10.1109/ICTEL.2012.6221253","url":null,"abstract":"The performance of channel estimation is often assessed by deriving the proper Cramér-Rao Bound (CRB). However, in the blind case a special treatment is required due to the singularity of the Fisher Information Matrix (FIM). Usually a constraint is introduced to overcome the blind ambiguity and ensuing singularity. Hence, a constrained CRB has been derived in the literature since a long time ago. Although this constrained CRB has been proven to be a valid lower bound in the medium and high SNR regimes, it fails completely in the low SNR regime because unlike the MSE it does not saturate. Motivated by the shortcoming of the constrained CRB, we derive in this paper a modified constrained CRB (MCCRB) for deterministic blind channel estimation. The MCCRB is valid over the whole SNR regime. In the second part of the paper we address Bayesian blind channel estimation and explore the apparent discrepancy between channel unidentifiability with a non-singular FIM. We highlight that in the less familiar Bayesian case this relationship needs to be interpreted differently. The analytical formulas for the introduced bounds are validated by some Monte-Carlo simulations.","PeriodicalId":413534,"journal":{"name":"2012 19th International Conference on Telecommunications (ICT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130303698","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

Smart public transportation services using smart phones in vehicular environments 在车辆环境中使用智能手机的智能公共交通服务

2012 19th International Conference on Telecommunications (ICT) Pub Date : 2012-04-23 DOI: 10.1109/ICTEL.2012.6221297

Rakan Nimer, Nourhan Farhat, Hadi El Hosni, Chadi El Masri, Nour Alawieh, Mark Saroufim, H. Artail

{"title":"Smart public transportation services using smart phones in vehicular environments","authors":"Rakan Nimer, Nourhan Farhat, Hadi El Hosni, Chadi El Masri, Nour Alawieh, Mark Saroufim, H. Artail","doi":"10.1109/ICTEL.2012.6221297","DOIUrl":"https://doi.org/10.1109/ICTEL.2012.6221297","url":null,"abstract":"Taxis play an important role in modern public transportation networks, especially in Lebanon where public transportation services are still underdeveloped. Street hailing is the current common method for getting a taxi, where you simply wait on side roads and hail to find a taxi who thinks you fit within his planned route. Taxi drivers currently rely on a simple first come-first serve approach with luck playing a large role in their daily profit. Problems arising from the current system are low taxi utilization, long passenger waiting times, road safety issues and traffic congestion. Our objective is to implement a new system that improves the existing shared taxi service by benefiting both the taxi drivers and passengers. The general idea is to design a system whose server receives requests from passengers and offers from drivers using smart phones with GPS capabilities and Internet access (3G/WIFI hotspots). The server periodically analyzes the geographical distribution of potential passengers on a digital map and then runs a scheduling algorithm to generate a stable taxi-passenger scheduling and finally broadcasts the allocations back to taxi drivers and potential passengers. The server will also utilize the taxi drivers' movement patterns to gain insight into the traffic congestion levels on Beirut's streets. The algorithm will be tested by running a model system on a network simulator.","PeriodicalId":413534,"journal":{"name":"2012 19th International Conference on Telecommunications (ICT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126188024","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

P2P application for file sharing P2P应用程序的文件共享

2012 19th International Conference on Telecommunications (ICT) Pub Date : 2012-04-23 DOI: 10.1109/ICTEL.2012.6221249

H. Amin, M. Chahine, G. Mazzini

引用次数: 1

Capacity evaluation in OFDMA cognitive radio networks OFDMA认知无线网络的容量评估

2012 19th International Conference on Telecommunications (ICT) Pub Date : 2012-04-23 DOI: 10.1109/ICTEL.2012.6221235

Mohammad Robat Mili, K. Hamdi

引用次数: 0

A performance comparison of FBMC modulation schemes with short perfect reconstruction filters 短时间完全重构滤波器FBMC调制方案的性能比较

2012 19th International Conference on Telecommunications (ICT) Pub Date : 2012-04-23 DOI: 10.1109/ICTEL.2012.6221247

Damien Roque, C. Siclet, P. Siohan

引用次数: 21

Coordinated multipoint power consumption modeling for energy efficiency assessment in LTE/LTE-advanced cellular networks 用于LTE/LTE-advanced蜂窝网络能效评估的协调多点功耗建模

2012 19th International Conference on Telecommunications (ICT) Pub Date : 2012-04-23 DOI: 10.1109/ICTEL.2012.6221266

Opeoluwa Tosin Eluwole, M. Lohi

{"title":"Coordinated multipoint power consumption modeling for energy efficiency assessment in LTE/LTE-advanced cellular networks","authors":"Opeoluwa Tosin Eluwole, M. Lohi","doi":"10.1109/ICTEL.2012.6221266","DOIUrl":"https://doi.org/10.1109/ICTEL.2012.6221266","url":null,"abstract":"Chronological developments from first (1G) to state-of-the-art fourth generation (4G) cellular networks have demonstrated remarkable exploits particularly in terms of peak data rate, throughput and spectral efficiency. However, this paper focuses on the energy efficiency (EE) aspect of cellular communications which apparently has been neglected until very recent years. Popular approaches for EE assessment (2G and 3G power consumption models) have been base station deployment strategies and joint management design/optimization techniques. This paper takes a step further to present a coordinated multipoint (CoMP)-enabled mathematical power consumption model for cooperating 4G base stations (eNodeBs) derived via component-oriented modeling technique; a view that a system or equipment comprises numerous energy-consuming components. We utilize the energy consumption rating (ECR) metric for the assessment of energy efficiency and simulations are carried out on the model with or without base station cooperation (BSC). Overall, results indicate on average that considerable energy savings up to 13% can be realized through BSC (CoMP).","PeriodicalId":413534,"journal":{"name":"2012 19th International Conference on Telecommunications (ICT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129308503","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: 13