2017 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom)最新文献_第5页

ELATS: Energy and locality aware aggregation tree for skip graph ELATS:跳跃图的能量和位置感知聚合树

2017 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom) Pub Date : 2017-06-01 DOI: 10.1109/BlackSeaCom.2017.8277685

Yahya Hassanzadeh-Nazarabadi, Öznur Özkasap

{"title":"ELATS: Energy and locality aware aggregation tree for skip graph","authors":"Yahya Hassanzadeh-Nazarabadi, Öznur Özkasap","doi":"10.1109/BlackSeaCom.2017.8277685","DOIUrl":"https://doi.org/10.1109/BlackSeaCom.2017.8277685","url":null,"abstract":"As a distributed hash table (DHT), Skip Graph acts as the underlying routing infrastructure of peer-to-peer (P2P) storage systems, distributed online social networks, search engines, and other DHT-based applications. For many P2P applications, data aggregation is vital, however, it is a missing feature of Skip Graph. The traditional aggregation algorithms cost noticeable message overhead which degrades the energy efficiency while increasing the response time. Likewise, the aggregation trees proposed for other DHTs are either inapplicable to the Skip Graph or apply some sort of randomness in their construction. Randomized features of an aggregation tree result in higher aggregation latency as well as enforcing unbalanced load on nodes which negatively affect the energy efficiency. In this paper, we propose ELATS which is the first energy and locality aware aggregation tree for Skip Graph. We define the energy awareness as minimizing the average energy cost of an aggregation tree, and the locality awareness as minimizing the latency on the path between the root and leaves of the aggregation tree. Performance analysis results show that ELATS algorithm provides both energy and locality awareness, and improves the aggregation latency with the gain of about 8% in comparison to the best existing solutions for DHTs which are either locality aware or energy aware.","PeriodicalId":126747,"journal":{"name":"2017 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125831266","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

A dynamic line rate assignment strategy for MLR WDM optical networks MLR WDM光网络的动态线路速率分配策略

2017 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom) Pub Date : 2017-06-01 DOI: 10.1109/BlackSeaCom.2017.8277682

Gul Boztok Algin, E. T. Tunali

引用次数: 3

A novel one-base station hybrid positioning method 一种新的单基站混合定位方法

2017 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom) Pub Date : 2017-06-01 DOI: 10.1109/BlackSeaCom.2017.8277687

Hengameh Takshi, Mahyar Nemati, E. Arvas, T. Baykaş

{"title":"A novel one-base station hybrid positioning method","authors":"Hengameh Takshi, Mahyar Nemati, E. Arvas, T. Baykaş","doi":"10.1109/BlackSeaCom.2017.8277687","DOIUrl":"https://doi.org/10.1109/BlackSeaCom.2017.8277687","url":null,"abstract":"In wireless networks, the need for accurate and low complexity localization methods are growing. Although many positioning methods based on signals' time difference of arrival (TDOA) and angle of arrival (AOA) have been proposed, these methods require multiple base stations (BS) and calculations with high complexity. Furthermore, the distance between a target and the BSs are usually larger than the distance between different BSs, which causes geometric dilution of precision (GDP) problem. To circumvent these issues, we propose a novel and linear method for positioning by only one BS. Our method uses both AOA and TDOA of incoming signals and called “positioning using one BS (PuOB)”. In this method, we take measurements from one BS at different time instances instead of taking measurements from multiple BSs simultaneously. The ability to estimate the mobile transmitter position accurately by using one BS is the highlighted advantage of the PuOB over the conventional methods. The positioning accuracy of PuOB for different BS numbers are presented. According to simulation results, PuOB outperforms TDOA and AOA methods using three and two BSs, respectively.","PeriodicalId":126747,"journal":{"name":"2017 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom)","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122770807","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

Space time block coded spatial modulation for free space optical communication 自由空间光通信的空时分组编码空间调制

2017 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom) Pub Date : 2017-06-01 DOI: 10.1109/BlackSeaCom.2017.8277714

Ferhat Fettahoglu, N. Odabasioglu

引用次数: 1

Pilot contamination mitigation in TDD massive MIMO systems TDD大规模MIMO系统的试验性污染缓解

2017 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom) Pub Date : 2017-06-01 DOI: 10.1109/BlackSeaCom.2017.8277658

Makram Alkhaled, E. Alsusa, Ammar Hadi, A. Alfitouri

引用次数: 4

Disaster early warning using time-critical IoT on elastic cloud workbench 在弹性云工作台上使用时间关键型物联网进行灾难预警

2017 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom) Pub Date : 2017-06-01 DOI: 10.1109/BlackSeaCom.2017.8277712

G. Suciu, Andrei Scheianu, Marius Constantin Vochin

引用次数: 4

Performance analysis of SEFDM with optimal subcarriers spectrum shapes 具有最优子载波频谱形状的SEFDM性能分析

2017 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom) Pub Date : 2017-06-01 DOI: 10.1109/BlackSeaCom.2017.8277680

A. Gelgor, A. Gorlov, V. Nguyen

{"title":"Performance analysis of SEFDM with optimal subcarriers spectrum shapes","authors":"A. Gelgor, A. Gorlov, V. Nguyen","doi":"10.1109/BlackSeaCom.2017.8277680","DOIUrl":"https://doi.org/10.1109/BlackSeaCom.2017.8277680","url":null,"abstract":"In this paper we propose the technique for SEFDM modification assuming that the conventional SEFDM is a particular type of partial response signals obtained from OFDM by a denser allocation of subcarriers. Primarily, we propose a utilization of optimal pulses as shapes for subcarriers spectrums; the pulse optimization is based on the criterion of the maximal free Euclidean distance. The optimization technique was originally described for single-carrier partial response signals, hence, we use the term PR-SEFDM to distinguish proposed signals from the sinc-SEFDM. We also suggest a generation and detection algorithms for PR-SEFDM operating in frequency domain as it is usually done for OFDM. The proposed approach implies the utilization of the Viterbi algorithm for demodulation. Thus, it becomes possible to process SEFDM signals with a large number of subcarriers. In this work, we analyze the PR-SEFDM mode with controlled ISI covering eight neighboring subcarriers. It has been shown that the PR-SEFDM provides a lower bandwidth consumption with respect to the sinc-SEFDM under a fixed energy consumption and fixed computational complexity of the detection algorithm.","PeriodicalId":126747,"journal":{"name":"2017 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom)","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132067325","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: 36

Improving video-on-demand performance by multi-channel/multicast approach in cellular networks 蜂窝网络中多通道/多播方法改进视频点播性能

2017 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom) Pub Date : 2017-06-01 DOI: 10.1109/BlackSeaCom.2017.8277684

Reza Shokri Kalan

引用次数: 0

Multipath delay profile and Doppler spread of millimeter radiowaves over the sea channel 毫米波在海上信道上的多径延迟分布和多普勒传播

2017 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom) Pub Date : 2017-06-01 DOI: 10.1109/BlackSeaCom.2017.8277689

Niloofar Mehrnia, M. K. Özdemir

{"title":"Multipath delay profile and Doppler spread of millimeter radiowaves over the sea channel","authors":"Niloofar Mehrnia, M. K. Özdemir","doi":"10.1109/BlackSeaCom.2017.8277689","DOIUrl":"https://doi.org/10.1109/BlackSeaCom.2017.8277689","url":null,"abstract":"This paper presents a line-of-sight (LoS) ship-to-ship wireless communication for millimeter radiowaves over the sea surface. 35 GHz and 94 GHz have been analyzed by our simulations as they are the frequencies of interest for the sea channels at millimeter radiowaves. The main time dispersion parameters of maritime channel such as mean excess delay, Root Mean Square (RMS) delay spread, coherence bandwidth (Bc), Doppler spread as well as coherence time and coherence distance have been investigated in this work. Cumulative Distribution Functions (CDFs) of time delay parameters indicate that the maritime channels can be assumed frequency non-selective as long as the bandwidth of transmitted signal does not exceed 750 MHz and 1.53 GHz at 35 GHz and 94 GHz, respectively. In addition, based on the results obtained from the Doppler spectrum, the sea channel is not affected by vessel movements and therefore the efficacy of Doppler frequency is negligible in maritime environments at these two frequencies. Consequently, the corresponding coherence times are relatively long enough not to cause distortion due to motion. As for the coherence distance, our results illustrate that the coherence distance for off shore marine channels is so large that it offers no space diversity over the sea channel.","PeriodicalId":126747,"journal":{"name":"2017 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122755616","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

In-situ experimental evaluation of LTE downlink signal levels in vicinity of base transceiver stations in urban area 城市基站附近LTE下行信号电平的原位实验评估

2017 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom) Pub Date : 2017-06-01 DOI: 10.1109/BlackSeaCom.2017.8277688

M. Ibrani, E. Hamiti, Luan Ahma, Rreze Halili, Jeta Dobruna

{"title":"In-situ experimental evaluation of LTE downlink signal levels in vicinity of base transceiver stations in urban area","authors":"M. Ibrani, E. Hamiti, Luan Ahma, Rreze Halili, Jeta Dobruna","doi":"10.1109/BlackSeaCom.2017.8277688","DOIUrl":"https://doi.org/10.1109/BlackSeaCom.2017.8277688","url":null,"abstract":"The implementation of new generation of cellular systems and the exponential growth of users of wireless communication services, is followed by the increase of number of base station transmitters especially in urban areas, to provide coverage and capacity for communication. One of the parameters considered in the framework of planning and extension of cellular networks is the human exposure to electromagnetic fields and compliance of base stations emissions with international safety standards. Despite that LTE network is extended in many countries, there is very limited data regarding experimental evaluation of LTE signal levels in the vicinity of base stations. We present the results of in — situ experimental evaluation of LTE signal levels in the vicinity of base station transmitters in urban areas. The measurements are conducted in outdoor and indoor areas, as well as LOS and NLOS positions, according to proprietary protocol using the spectrum analyzer NARDA SRM 3006. To the measurement data set is applied a correction factor, to extrapolate the measured values to the maximum operating load of the system. For the measurement campaign, including more than 51 % of base stations located in the urban area under the study, the highest measured value is 135.62 dBμV/m, captured in outdoor LOS position. The results of our measurement campaign are compared with ICNIRP standards as well as with LTE signal levels obtained in other countries.","PeriodicalId":126747,"journal":{"name":"2017 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132149381","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