Pub Date : 2015-09-01DOI: 10.1109/IWOW.2015.7342268
N. A. M. Nor, J. Bohata, Zabih Ghassemlooy, S. Zvánovec, P. Pesek, M. Komanec, J. Libich, M. Khalighi
Relay-assisted free space optics (FSO) communications becomes one of the promising solutions to improve the FSO link capabilities by implicitly reducing the transmission distance and exploiting distance-dependent fading variance of turbulence. Highly motivated by the capabilities of the system, this paper presents bit error rate (BER) performance of an all-optical 10-Gbps FSO relay based system using amplify-and-forward signaling is investigated through numerical simulations and experimental implementation. Results show that BER improves up to several orders of magnitudes when using relay based links over the same turbulent distance.
{"title":"10 Gbps all-optical relay-assisted FSO system over a turbulence channel","authors":"N. A. M. Nor, J. Bohata, Zabih Ghassemlooy, S. Zvánovec, P. Pesek, M. Komanec, J. Libich, M. Khalighi","doi":"10.1109/IWOW.2015.7342268","DOIUrl":"https://doi.org/10.1109/IWOW.2015.7342268","url":null,"abstract":"Relay-assisted free space optics (FSO) communications becomes one of the promising solutions to improve the FSO link capabilities by implicitly reducing the transmission distance and exploiting distance-dependent fading variance of turbulence. Highly motivated by the capabilities of the system, this paper presents bit error rate (BER) performance of an all-optical 10-Gbps FSO relay based system using amplify-and-forward signaling is investigated through numerical simulations and experimental implementation. Results show that BER improves up to several orders of magnitudes when using relay based links over the same turbulent distance.","PeriodicalId":247164,"journal":{"name":"2015 4th International Workshop on Optical Wireless Communications (IWOW)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124109577","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}
Pub Date : 2015-09-01DOI: 10.1109/IWOW.2015.7342274
Refik Caglar Kizilirmak, C. Rowell, M. Uysal
Providing multiple access support to visible light communication (VLC) systems requires new networking architecture. Non-orthogonal multiple access (NOMA) is a proposed multiple access technique for future cellular systems. In this work, based on a realistic indoor channel conditions, we apply NOMA to indoor VLC channels and demonstrate its superior performance over orthogonal frequency division multiple access (OFDMA).
{"title":"Non-orthogonal multiple access (NOMA) for indoor visible light communications","authors":"Refik Caglar Kizilirmak, C. Rowell, M. Uysal","doi":"10.1109/IWOW.2015.7342274","DOIUrl":"https://doi.org/10.1109/IWOW.2015.7342274","url":null,"abstract":"Providing multiple access support to visible light communication (VLC) systems requires new networking architecture. Non-orthogonal multiple access (NOMA) is a proposed multiple access technique for future cellular systems. In this work, based on a realistic indoor channel conditions, we apply NOMA to indoor VLC channels and demonstrate its superior performance over orthogonal frequency division multiple access (OFDMA).","PeriodicalId":247164,"journal":{"name":"2015 4th International Workshop on Optical Wireless Communications (IWOW)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114310691","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}
Pub Date : 2015-09-01DOI: 10.1109/IWOW.2015.7342279
D. Tagliaferri, C. Capsoni
This work reports the development of a MATLAB® simulation tool for the indoor VLC channel characterization. In addition to the evaluation of the light level and the impulse responses in any point of the simulation volume, the modeling of the various sources of disturbance (sunlight, skylight, general illumination devices and interfering ones) is also specifically addressed. The accuracy of the predictions was verified by comparing the simulator outcomes with a set of measurements carried out in a furnished office.
{"title":"Development and testing of an indoor VLC simulator","authors":"D. Tagliaferri, C. Capsoni","doi":"10.1109/IWOW.2015.7342279","DOIUrl":"https://doi.org/10.1109/IWOW.2015.7342279","url":null,"abstract":"This work reports the development of a MATLAB® simulation tool for the indoor VLC channel characterization. In addition to the evaluation of the light level and the impulse responses in any point of the simulation volume, the modeling of the various sources of disturbance (sunlight, skylight, general illumination devices and interfering ones) is also specifically addressed. The accuracy of the predictions was verified by comparing the simulator outcomes with a set of measurements carried out in a furnished office.","PeriodicalId":247164,"journal":{"name":"2015 4th International Workshop on Optical Wireless Communications (IWOW)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128138919","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}
Pub Date : 2015-09-01DOI: 10.1109/IWOW.2015.7342265
Maryam Haghighi Ardakani, A. Heidarpour, M. Uysal
Ultraviolet (UV) communication enables non-line-of sight (NLOS) outdoor wireless connectivity and is particularly desirable to relax or eliminate pointing and tracking requirements of infrared links. In the current literature, atmospheric turbulence effects are typically ignored under the assumption of short link distances and clear weather conditions. In this paper, we address the statistical modeling of turbulence experienced in NLOS UV links. We assume that the NLOS link consists of two line-of-sight (LOS) paths each of which experiences log-normal distributed fading. We obtain a closed-form expression for the probability density function of turbulence induced fading. Based on the derived expression, we investigate bit error rate performance for different system configurations. Numerical simulations are further presented to confirm the accuracy of our derivation.
{"title":"Non-line-of-sight ultraviolet communications over atmospheric turbulence channels","authors":"Maryam Haghighi Ardakani, A. Heidarpour, M. Uysal","doi":"10.1109/IWOW.2015.7342265","DOIUrl":"https://doi.org/10.1109/IWOW.2015.7342265","url":null,"abstract":"Ultraviolet (UV) communication enables non-line-of sight (NLOS) outdoor wireless connectivity and is particularly desirable to relax or eliminate pointing and tracking requirements of infrared links. In the current literature, atmospheric turbulence effects are typically ignored under the assumption of short link distances and clear weather conditions. In this paper, we address the statistical modeling of turbulence experienced in NLOS UV links. We assume that the NLOS link consists of two line-of-sight (LOS) paths each of which experiences log-normal distributed fading. We obtain a closed-form expression for the probability density function of turbulence induced fading. Based on the derived expression, we investigate bit error rate performance for different system configurations. Numerical simulations are further presented to confirm the accuracy of our derivation.","PeriodicalId":247164,"journal":{"name":"2015 4th International Workshop on Optical Wireless Communications (IWOW)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133868207","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}
Pub Date : 2015-09-01DOI: 10.1109/IWOW.2015.7342280
Luka Mustafa, Eva Cerncic
Due to lack of low-cost near infra-red measurement devices for spatial beam profiling in free-space optical systems, a custom solution is developed, utilizing commercially available PIN+TIA detector and limiting amplifier, that are primarily used in SFP optical modules.
{"title":"Low-cost NIR measurement device","authors":"Luka Mustafa, Eva Cerncic","doi":"10.1109/IWOW.2015.7342280","DOIUrl":"https://doi.org/10.1109/IWOW.2015.7342280","url":null,"abstract":"Due to lack of low-cost near infra-red measurement devices for spatial beam profiling in free-space optical systems, a custom solution is developed, utilizing commercially available PIN+TIA detector and limiting amplifier, that are primarily used in SFP optical modules.","PeriodicalId":247164,"journal":{"name":"2015 4th International Workshop on Optical Wireless Communications (IWOW)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121637717","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}
Pub Date : 2015-09-01DOI: 10.1109/IWOW.2015.7342258
Kai-Daniel Buchter
Airborne Communication Networks have been discussed in civilian and military contexts. However, radio-frequency-based implementations of large-scale, ad hoc networks are hindered by regulatory restrictions and are fundamentally limited in capacity potentials. Therefore, free-space optical communication is an important technology option for such networks, due to the large available bandwidth and unregulated spectrum. Here we present statistical data from an airborne communication network simulation model, discuss possible performance requirements on free-space optical components for airborne networks, and discuss the implications of network topology and communication range on network statistics.
{"title":"Modeling of high-capacity aeronautical Communication Networks with free-space optical links","authors":"Kai-Daniel Buchter","doi":"10.1109/IWOW.2015.7342258","DOIUrl":"https://doi.org/10.1109/IWOW.2015.7342258","url":null,"abstract":"Airborne Communication Networks have been discussed in civilian and military contexts. However, radio-frequency-based implementations of large-scale, ad hoc networks are hindered by regulatory restrictions and are fundamentally limited in capacity potentials. Therefore, free-space optical communication is an important technology option for such networks, due to the large available bandwidth and unregulated spectrum. Here we present statistical data from an airborne communication network simulation model, discuss possible performance requirements on free-space optical components for airborne networks, and discuss the implications of network topology and communication range on network statistics.","PeriodicalId":247164,"journal":{"name":"2015 4th International Workshop on Optical Wireless Communications (IWOW)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132114589","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}
Pub Date : 2015-09-01DOI: 10.1109/IWOW.2015.7342255
K. Werfli, P. Haigh, Zabih Ghassemlooy, P. Chvojka, S. Zvánovec, S. Rajbhandari, Shihe Long
This paper presents simulation results that show the principle of implementing multi-band carrierless amplitude and phase (m-CAP) modulation enhanced by the decision feedback equalizer (DFE) for a bandlimited visible light communications (VLC) system. When deploying different number of sub-carriers m = {1, 2, 5, 10}, we show the bit error rate (BER) performance of m-CAP over a fixed system bandwidth of 1 Hz with and without a DFE. We show that we can achieve a BER of 10-4 for the m-CAP system for m = {1, 2}, which is well below the 7% and 20% forward error correction (FEC) BER limits of 3.8×10-3 and 2×10-2, respectively.
{"title":"Multi-band carrier-less amplitude and phase modulation with decision feedback equalization for bandlimited VLC systems","authors":"K. Werfli, P. Haigh, Zabih Ghassemlooy, P. Chvojka, S. Zvánovec, S. Rajbhandari, Shihe Long","doi":"10.1109/IWOW.2015.7342255","DOIUrl":"https://doi.org/10.1109/IWOW.2015.7342255","url":null,"abstract":"This paper presents simulation results that show the principle of implementing multi-band carrierless amplitude and phase (m-CAP) modulation enhanced by the decision feedback equalizer (DFE) for a bandlimited visible light communications (VLC) system. When deploying different number of sub-carriers m = {1, 2, 5, 10}, we show the bit error rate (BER) performance of m-CAP over a fixed system bandwidth of 1 Hz with and without a DFE. We show that we can achieve a BER of 10-4 for the m-CAP system for m = {1, 2}, which is well below the 7% and 20% forward error correction (FEC) BER limits of 3.8×10-3 and 2×10-2, respectively.","PeriodicalId":247164,"journal":{"name":"2015 4th International Workshop on Optical Wireless Communications (IWOW)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122097924","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}
Pub Date : 2015-08-29DOI: 10.1109/IWOW.2015.7342259
Mohammad Vahid Jamali, J. Salehi
In this paper we analyze and investigate the bit error rate (BER) performance of multiple-input multiple-output underwater wireless optical communication (MIMO-UWOC) systems. In addition to exact BER expressions, we also obtain an upper bound on the system BER. To effectively estimate the BER expressions, we use Gauss-Hermite quadrature formula as well as approximation to the sum of log-normal random variables. We confirm the accuracy of our analytical expressions by evaluating the BER through photon-counting approach. Our simulation results show that MIMO technique can mitigate the channel turbulence-induced fading and consequently, can partially extend the viable communication range, especially for channels with stronger turbulence.
{"title":"On the BER of multiple-input multiple-output underwater wireless optical communication systems","authors":"Mohammad Vahid Jamali, J. Salehi","doi":"10.1109/IWOW.2015.7342259","DOIUrl":"https://doi.org/10.1109/IWOW.2015.7342259","url":null,"abstract":"In this paper we analyze and investigate the bit error rate (BER) performance of multiple-input multiple-output underwater wireless optical communication (MIMO-UWOC) systems. In addition to exact BER expressions, we also obtain an upper bound on the system BER. To effectively estimate the BER expressions, we use Gauss-Hermite quadrature formula as well as approximation to the sum of log-normal random variables. We confirm the accuracy of our analytical expressions by evaluating the BER through photon-counting approach. Our simulation results show that MIMO technique can mitigate the channel turbulence-induced fading and consequently, can partially extend the viable communication range, especially for channels with stronger turbulence.","PeriodicalId":247164,"journal":{"name":"2015 4th International Workshop on Optical Wireless Communications (IWOW)","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133640580","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：