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2013 2nd International Workshop on Optical Wireless Communications (IWOW)最新文献

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Experimental demonstration of high speed underwater visible light communications 高速水下可见光通信的实验演示
2013 2nd International Workshop on Optical Wireless Communications (IWOW) Pub Date : 2013-10-01 DOI: 10.1109/IWOW.2013.6777767
G. Cossu, R. Corsini, A. Khalid, S. Balestrino, A. Coppelli, A. Caiti, E. Ciaramella
{"title":"Experimental demonstration of high speed underwater visible light communications","authors":"G. Cossu, R. Corsini, A. Khalid, S. Balestrino, A. Coppelli, A. Caiti, E. Ciaramella","doi":"10.1109/IWOW.2013.6777767","DOIUrl":"https://doi.org/10.1109/IWOW.2013.6777767","url":null,"abstract":"We experimentally prove high-speed underwater optical wireless transmission over 2.5 m distance, using different bit rates and modulation schemes. The system uses two low-cost Light Emitting Diodes (LEDs) arrays as optical transmitter and an avalanche photodiode module as receiver. The measurements are taken using an outdoor water tank having 3.3 m diameter, where two waterproof boxes containing the transmitter and the receiver are fixed underwater at the inner borders. We test 6.25 Mbit/s with Manchester coding, 12.5 Mbit/s with NRZ 8b/10b coding and 58 Mbit/s with Discrete Multitone modulation. Bit Error Rate measurements are collected over several hours under typical summer sunlight illumination conditions. In all the experimental conditions we achieve error free transmission.","PeriodicalId":134436,"journal":{"name":"2013 2nd International Workshop on Optical Wireless Communications (IWOW)","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114997167","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: 91
FPGA-based media converter for FSO links FSO链路的基于fpga的媒体转换器
2013 2nd International Workshop on Optical Wireless Communications (IWOW) Pub Date : 2013-10-01 DOI: 10.1109/IWOW.2013.6777798
J. Poliak, M. Kubícek
{"title":"FPGA-based media converter for FSO links","authors":"J. Poliak, M. Kubícek","doi":"10.1109/IWOW.2013.6777798","DOIUrl":"https://doi.org/10.1109/IWOW.2013.6777798","url":null,"abstract":"The paper summarises basic principles of free-space optical (FSO) links and their applications. Further an experimental FSO platform is presented. Its main purpose is to demonstrate FSO benefits for last-mile interconnect solution, especially for end users. The realized FSO link transceiver based on FPGA is described in detail, including its expected performance characteristics. The main benefit of the proposed FSO link is its simplicity, low-cost design and protocol transparency. The transceiver uses a single Ethernet cable for both data transmission and power supply. This greatly simplifies and speeds up the link installation procedure. Finally, a pair of FSO transceivers with an integrated media converter were built and are currently in the process of testing.","PeriodicalId":134436,"journal":{"name":"2013 2nd International Workshop on Optical Wireless Communications (IWOW)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129541468","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: 1
On the performance of hybrid RF and RF/FSO dual-hop transmission systems 混合射频和射频/无线双跳传输系统的性能研究
2013 2nd International Workshop on Optical Wireless Communications (IWOW) Pub Date : 2013-10-01 DOI: 10.1109/IWOW.2013.6777774
I. S. Ansari, F. Yilmaz, Mohamed-Slim Alouini
{"title":"On the performance of hybrid RF and RF/FSO dual-hop transmission systems","authors":"I. S. Ansari, F. Yilmaz, Mohamed-Slim Alouini","doi":"10.1109/IWOW.2013.6777774","DOIUrl":"https://doi.org/10.1109/IWOW.2013.6777774","url":null,"abstract":"In this work, we present the performance analysis of a dual-branch transmission system composed of a direct radio frequency (RF) link and a dual-hop relay composed of asymmetric RF and free-space optical (FSO) links. The FSO link accounts for pointing errors and both types of detection techniques (i.e. intensity modulation/direct detection (IM/DD) as well as heterodyne detection). The performance is evaluated under the assumption of selection combining (SC) diversity scheme. RF links are modeled by Rayleigh fading distribution whereas the FSO link is modeled by a unified Gamma-Gamma fading distribution. Specifically, we derive new exact closed-form expressions for the cumulative distribution function, probability density function, moment generating function, and moments of the end-to-end signal-to-noise ratio of such systems in terms of the Meijer's G function. We then capitalize on these results to offer new exact closed-form expressions for the outage probability, higher-order amount of fading, average error rate for binary and M-ary modulation schemes, and ergodic capacity, all in terms of Meijer's G functions.","PeriodicalId":134436,"journal":{"name":"2013 2nd International Workshop on Optical Wireless Communications (IWOW)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114873090","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: 30
Optical communications over lognormal fading channels using OOK 使用OOK的对数正态衰落信道上的光通信
2013 2nd International Workshop on Optical Wireless Communications (IWOW) Pub Date : 2013-10-01 DOI: 10.1109/IWOW.2013.6777786
Luanxia Yang, Julian Cheng, J. Holzman
{"title":"Optical communications over lognormal fading channels using OOK","authors":"Luanxia Yang, Julian Cheng, J. Holzman","doi":"10.1109/IWOW.2013.6777786","DOIUrl":"https://doi.org/10.1109/IWOW.2013.6777786","url":null,"abstract":"We consider optical wireless communication systems over lognormal turbulence channels. Such systems can suffer from irreducible error floors when using on-off keying demodulation with fixed detection thresholds. The resulting error floors are analyzed for a nonzero extinction ratio. An electrical signal-to-noise ratio optimized detection system is introduced to eliminate the error floors, and such a system is designed for unknown turbulence environments. The bit-error rate performance of such a system is assessed for the lognormal fading channels.","PeriodicalId":134436,"journal":{"name":"2013 2nd International Workshop on Optical Wireless Communications (IWOW)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114570432","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: 6
Residual carrier influence on system performance of a 60 GHz Radio over Fiber system 剩余载波对60ghz光纤无线通信系统性能的影响
2013 2nd International Workshop on Optical Wireless Communications (IWOW) Pub Date : 2013-10-01 DOI: 10.1109/IWOW.2013.6777784
Z. Al-Husseini, N. Neumann, D. Plettemeier
{"title":"Residual carrier influence on system performance of a 60 GHz Radio over Fiber system","authors":"Z. Al-Husseini, N. Neumann, D. Plettemeier","doi":"10.1109/IWOW.2013.6777784","DOIUrl":"https://doi.org/10.1109/IWOW.2013.6777784","url":null,"abstract":"Radio over Fiber (RoF) can be considered as the most suitable and cost-effective solution providing a high performance for data transmission in the Gbit/s range. The system consists of a central station (CS) sharing the complexity of generation, modulation, and coding between multiple users. The simple base station (BS) contains an optoelectrical transceiver, amplifier and antenna. It is connected by single mode fiber to the central station. In this paper, the possibility of reducing the complexity of the 60 GHz carrier generation system in the CS to optimize the overall system performance was investigated. The influence of the residual carrier after the carrier generation in terms of system response and phase noise is measured, and the system setup is optimized.","PeriodicalId":134436,"journal":{"name":"2013 2nd International Workshop on Optical Wireless Communications (IWOW)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134359632","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: 1
Subcarrier noncoherent and differentially coherent modulated optical communications in strong atmospheric turbulence 强大气湍流中的副载波非相干和差分相干调制光通信
2013 2nd International Workshop on Optical Wireless Communications (IWOW) Pub Date : 2013-10-01 DOI: 10.1109/IWOW.2013.6777794
Xuegui Song, Julian Cheng
{"title":"Subcarrier noncoherent and differentially coherent modulated optical communications in strong atmospheric turbulence","authors":"Xuegui Song, Julian Cheng","doi":"10.1109/IWOW.2013.6777794","DOIUrl":"https://doi.org/10.1109/IWOW.2013.6777794","url":null,"abstract":"We study the error rate performance of subcarrier noncoherent and differentially coherent modulated optical wireless communication systems over the K-distributed turbulence channels. Using a moment generating function approach along with a series expansion of the modified Bessel function, we obtain a unified highly accurate series bit-error rate expression for a family of noncoherent and differentially coherent modulations. We also analyze the symbol-error rate performance of subcarrier M-ary differential phase-shift keying (DPSK) and M-ary noncoherent frequency-shift keying (NCFSK) modulated systems using the same frequency domain approach. We compare the error rate performance of subcarrier DPSK and adaptive on-off keying (OOK) using direct detection. It is shown that subcarrier DPSK is only 0.91 dB worse than OOK in strong turbulence.","PeriodicalId":134436,"journal":{"name":"2013 2nd International Workshop on Optical Wireless Communications (IWOW)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134007077","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
Hydrometeor scattering and stochastic modeling for free-space optical channel characterization 自由空间光通道表征的水流星散射和随机建模
2013 2nd International Workshop on Optical Wireless Communications (IWOW) Pub Date : 2013-10-01 DOI: 10.1109/IWOW.2013.6777777
S. Mori, F. Marzano, L. Mereu, M. Montopoli, G. Beleffi, S. D. Bartolo
{"title":"Hydrometeor scattering and stochastic modeling for free-space optical channel characterization","authors":"S. Mori, F. Marzano, L. Mereu, M. Montopoli, G. Beleffi, S. D. Bartolo","doi":"10.1109/IWOW.2013.6777777","DOIUrl":"https://doi.org/10.1109/IWOW.2013.6777777","url":null,"abstract":"Free space communications, using optical carriers (Free Space Optics, FSO) technology, ensure high data rates, with relatively low error rates, low power consumption and inherent security. However, FSO links are quite sensitive to atmospheric conditions. Fog droplets, but also raindrops and snowflakes, may introduce severe path attenuation which drastically reduces the channel availability. A parametric model to simulate droplets scattering effects on FSO links (from visible to near infrared wavelengths) is proposed in terms of scattering coefficients, albedo factor and asymmetry coefficient as function of the particle water content. Both single and multiple scattering effects are shown and discussed. A prototype of a stochastic time series generator of FSO rain attenuation is also presented.","PeriodicalId":134436,"journal":{"name":"2013 2nd International Workshop on Optical Wireless Communications (IWOW)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122381631","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
Propagation characteristics obtained on parallel terrestrial FSO links at 860 nm and 1550 nm 在860nm和1550nm平行地面FSO链路上的传播特性
2013 2nd International Workshop on Optical Wireless Communications (IWOW) Pub Date : 2013-10-01 DOI: 10.1109/IWOW.2013.6777773
V. Kvicera, M. Grábner, O. Fiser
{"title":"Propagation characteristics obtained on parallel terrestrial FSO links at 860 nm and 1550 nm","authors":"V. Kvicera, M. Grábner, O. Fiser","doi":"10.1109/IWOW.2013.6777773","DOIUrl":"https://doi.org/10.1109/IWOW.2013.6777773","url":null,"abstract":"Attenuation due to hydrometeors on two parallel terrestrial free-space optical links working at 860 nm and 1550 nm on an 853 m long path and concurrent meteorological measurements were processed over a one-year period. Attenuation events were classified according to the types of hydrometeors that occurred. Both the attenuation and meteorological data were statistically processed and the obtained cumulative distributions of attenuation due to hydrometeors are presented. Cumulative distributions of lower visibilities due to individual hydrometeors as well as cumulative distributions of hydrometeor intensities are also given. The results obtained are discussed.","PeriodicalId":134436,"journal":{"name":"2013 2nd International Workshop on Optical Wireless Communications (IWOW)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128981080","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: 1
First order statistics of semiconductor optical amplifier assisted optical wireless systems under log-normal fading 对数正态衰落下半导体光放大器辅助光学无线系统的一阶统计量
2013 2nd International Workshop on Optical Wireless Communications (IWOW) Pub Date : 2013-10-01 DOI: 10.1109/IWOW.2013.6777795
A. Boucouvalas, N. Sagias, K. Yiannopoulos
{"title":"First order statistics of semiconductor optical amplifier assisted optical wireless systems under log-normal fading","authors":"A. Boucouvalas, N. Sagias, K. Yiannopoulos","doi":"10.1109/IWOW.2013.6777795","DOIUrl":"https://doi.org/10.1109/IWOW.2013.6777795","url":null,"abstract":"In this paper, we evaluate the utilization of a semiconductor optical amplifier (SOA) at the receiver of an outdoor optical wireless system for fade mitigation purposes. Due to its instantaneous gain response, the SOA provides saturating gain to incoming pulses and partially alleviates power variations between fade impaired and non-impaired instances of the received signal. We discuss this unbalanced SOA operation and analytically derive the first order statistics of the optical signal at the SOA output, giving emphasis on the scintillation index and the fade probability. Our results show that both the scintillation index and the fade probability are improved significantly by deploying the SOA, when the system operates in the weak turbulence regime.","PeriodicalId":134436,"journal":{"name":"2013 2nd International Workshop on Optical Wireless Communications (IWOW)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125690495","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
Carrier drawing-out power LED driver with cost-effective discrete parts 载波引出电源LED驱动器具有成本效益的分立部件
2013 2nd International Workshop on Optical Wireless Communications (IWOW) Pub Date : 2013-10-01 DOI: 10.1109/IWOW.2013.6777768
Gábor Szabó, G. Fehér, G. Fekete, G. Mészáros
{"title":"Carrier drawing-out power LED driver with cost-effective discrete parts","authors":"Gábor Szabó, G. Fehér, G. Fekete, G. Mészáros","doi":"10.1109/IWOW.2013.6777768","DOIUrl":"https://doi.org/10.1109/IWOW.2013.6777768","url":null,"abstract":"This paper introduces a novel driving circuit for power LEDs that is capable of effectively utilizing the OOK modulation for visible light communication applications. The circuit uses the carrier drawing-out technique and consists of cheap discrete elements, so total cost can be kept low which is a must for future integration in lighting systems.","PeriodicalId":134436,"journal":{"name":"2013 2nd International Workshop on Optical Wireless Communications (IWOW)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126750857","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: 1
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