Ángela A. de Grado Vivero, O. Alani, J. Elmirghani
The development of airports such as the recently inaugurated Heathrow Terminal 5, as well as the increasing number of people using these facilities every day for business reasons or just for pleasure, reveals the importance of adequate and reliable communication facilities in this context. This environment is characterized by multiservice, multistandard wireless technologies and a highly variable traffic demand in space and time due to passenger flow, behavior, and usage from the terminal's entrance to the corresponding boarding gate, ruled by flight departure schedules, in the indoor environment. The Intelligent Airport (TINA) project establishes its objective as the creation of a seamless hybrid wireless and wired infrastructure capable of providing users with a wide range of services, based on radio-over-fiber (RoF) networks, anticipating the deployment of multiple air interfaces within 4G networks. In this paper the spatial and temporal traffic demand is analyzed and modeled through simulation, as a means of selecting the optimum location for the base stations/antenna units (BSs/AUs) in the network. A load-balancing technique is applied to ease the load on congested cells using strategically located fixed relay nodes, and the network's behavior is analyzed for different BS properties.
{"title":"Indoor airport radio-over-fiber network traffic model and performance analysis using load-balancing techniques [Invited]","authors":"Ángela A. de Grado Vivero, O. Alani, J. Elmirghani","doi":"10.1364/JON.8.000272","DOIUrl":"https://doi.org/10.1364/JON.8.000272","url":null,"abstract":"The development of airports such as the recently inaugurated Heathrow Terminal 5, as well as the increasing number of people using these facilities every day for business reasons or just for pleasure, reveals the importance of adequate and reliable communication facilities in this context. This environment is characterized by multiservice, multistandard wireless technologies and a highly variable traffic demand in space and time due to passenger flow, behavior, and usage from the terminal's entrance to the corresponding boarding gate, ruled by flight departure schedules, in the indoor environment. The Intelligent Airport (TINA) project establishes its objective as the creation of a seamless hybrid wireless and wired infrastructure capable of providing users with a wide range of services, based on radio-over-fiber (RoF) networks, anticipating the deployment of multiple air interfaces within 4G networks. In this paper the spatial and temporal traffic demand is analyzed and modeled through simulation, as a means of selecting the optimum location for the base stations/antenna units (BSs/AUs) in the network. A load-balancing technique is applied to ease the load on congested cells using strategically located fixed relay nodes, and the network's behavior is analyzed for different BS properties.","PeriodicalId":49154,"journal":{"name":"Journal of Optical Networking","volume":"8 1","pages":"272-284"},"PeriodicalIF":0.0,"publicationDate":"2009-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1364/JON.8.000272","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66592932","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}
This paper introduces a novel fiber-wireless (FiWi) network architecture, called SuperMAN, and investigates the optical-wireless integration of a resilient packet ring (RPR) and WiMAX networks. We propose a novel hierarchical integrated scheduling algorithm that significantly improves the throughput-delay performance and triple-play quality-of-service support for fixed and mobile users. By means of extensive simulations we show in a benchmark comparison that the proposed hierarchical scheduler clearly outperforms the widely deployed weighted fair queuing (WFQ) scheduler in terms of mean aggregate throughput and mean delay as well as robustness for voice, video, and data traffic under realistic wireless channel conditions.
{"title":"SuperMAN: Optical-wireless integration of RPR and WiMAX","authors":"N. Ghazisaidi, F. Paolucci, M. Maier","doi":"10.1364/JON.8.000249","DOIUrl":"https://doi.org/10.1364/JON.8.000249","url":null,"abstract":"This paper introduces a novel fiber-wireless (FiWi) network architecture, called SuperMAN, and investigates the optical-wireless integration of a resilient packet ring (RPR) and WiMAX networks. We propose a novel hierarchical integrated scheduling algorithm that significantly improves the throughput-delay performance and triple-play quality-of-service support for fixed and mobile users. By means of extensive simulations we show in a benchmark comparison that the proposed hierarchical scheduler clearly outperforms the widely deployed weighted fair queuing (WFQ) scheduler in terms of mean aggregate throughput and mean delay as well as robustness for voice, video, and data traffic under realistic wireless channel conditions.","PeriodicalId":49154,"journal":{"name":"Journal of Optical Networking","volume":"8 1","pages":"249-271"},"PeriodicalIF":0.0,"publicationDate":"2009-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1364/JON.8.000249","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66592927","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}
H. Shams, A. Kaszubowska-Anandarajah, P. Perry, L. Barry
What we believe to be a novel system for the distribution of high-definition video streams in a residential environment is demonstrated. The system utilizes impulse radio ultrawideband (IR-UWB) technology integrated with a fiber-based distribution network. The pulses are directly generated in the optical domain, and the receiver is implemented with a carrier recovery system for the demodulation. The system was built and tested to demonstrate error-free operation of the distribution network and the receiver. Spectrum shaping by varying the pulse position within the bit slot to optimize system performance is also examined.
{"title":"Demonstration and optimization of an optical impulse radio ultrawideband distribution system using a gain-switched laser transmitter","authors":"H. Shams, A. Kaszubowska-Anandarajah, P. Perry, L. Barry","doi":"10.1364/JON.8.000179","DOIUrl":"https://doi.org/10.1364/JON.8.000179","url":null,"abstract":"What we believe to be a novel system for the distribution of high-definition video streams in a residential environment is demonstrated. The system utilizes impulse radio ultrawideband (IR-UWB) technology integrated with a fiber-based distribution network. The pulses are directly generated in the optical domain, and the receiver is implemented with a carrier recovery system for the demodulation. The system was built and tested to demonstrate error-free operation of the distribution network and the receiver. Spectrum shaping by varying the pulse position within the bit slot to optimize system performance is also examined.","PeriodicalId":49154,"journal":{"name":"Journal of Optical Networking","volume":"53 55 1","pages":"179-187"},"PeriodicalIF":0.0,"publicationDate":"2009-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1364/JON.8.000179","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66592534","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}
I. White, E. T. Aw, K. Williams, Haibo Wang, A. Wonfor, R. Penty
A scalable photonic interconnection network architecture is proposed whereby a Clos network is populated with broadcast-and-select stages. This enables the efficient exploitation of an emerging class of photonic integrated switch fabric. A low distortion space switch technology based on recently demonstrated quantum-dot semiconductor optical amplifier technology, which can be operated uncooled, is used as the base switch element. The viability of these switches in cascaded networks is reviewed, and predictions are made through detailed physical layer simulation to explore the potential for larger-scale network connectivity. Optical signal degradation is estimated as a function of data capacity and network size. Power efficiency and physical layer complexity are addressed for high end-to-end bandwidth, nanosecond-reconfigurable switch fabrics, to highlight the potential for scaling to several tens of connections. The proposed architecture is envisaged to facilitate high-capacity, low-latency switching suited to computing systems, backplanes, and data networks. Broadband operation through wavelength division multiplexing is studied to identify practical interconnection networks scalable to 100 Gbits/s per path and a power consumption of the order of 20 mW/(Gbits/s) for a 64×64 size interconnection network.
{"title":"Scalable optical switches for computing applications [Invited]","authors":"I. White, E. T. Aw, K. Williams, Haibo Wang, A. Wonfor, R. Penty","doi":"10.1364/JON.8.000215","DOIUrl":"https://doi.org/10.1364/JON.8.000215","url":null,"abstract":"A scalable photonic interconnection network architecture is proposed whereby a Clos network is populated with broadcast-and-select stages. This enables the efficient exploitation of an emerging class of photonic integrated switch fabric. A low distortion space switch technology based on recently demonstrated quantum-dot semiconductor optical amplifier technology, which can be operated uncooled, is used as the base switch element. The viability of these switches in cascaded networks is reviewed, and predictions are made through detailed physical layer simulation to explore the potential for larger-scale network connectivity. Optical signal degradation is estimated as a function of data capacity and network size. Power efficiency and physical layer complexity are addressed for high end-to-end bandwidth, nanosecond-reconfigurable switch fabrics, to highlight the potential for scaling to several tens of connections. The proposed architecture is envisaged to facilitate high-capacity, low-latency switching suited to computing systems, backplanes, and data networks. Broadband operation through wavelength division multiplexing is studied to identify practical interconnection networks scalable to 100 Gbits/s per path and a power consumption of the order of 20 mW/(Gbits/s) for a 64×64 size interconnection network.","PeriodicalId":49154,"journal":{"name":"Journal of Optical Networking","volume":"8 1","pages":"215-224"},"PeriodicalIF":0.0,"publicationDate":"2009-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1364/JON.8.000215","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66592917","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}
Jyehong Chen, Chun-Ting Lin, P. Shih, Wen-Jr Jiang, S. Dai, Yu-Min Lin, P. Peng, S. Chi
This study discusses two key technologies used in radio-over-fiber (RoF) systems, namely, the generation and transmission of millimeter-wave signals and optical modulation schemes capable of carrying vector signal formats and utilizing the continuous performance improvements offered by digital signal processing. A cost-effective frequency-quadrupling technique capable of generating millimeter-wave signals up to 72 GHz is proposed. The generated optical millimeter-wave signals have very high quality, with an optical carrier and harmonic distortion suppression ratio exceeding 36 dB. An optical modulation scheme that can support a 64-QAM, 16 Gbits/s orthogonal frequency-division multiplexing RoF system is also demonstrated. Results of this study demonstrate that both methods offer realistic solutions to support future wireless systems.
{"title":"Generation of optical millimeter-wave signals and vector formats using an integrated optical I/Q modulator [Invited]","authors":"Jyehong Chen, Chun-Ting Lin, P. Shih, Wen-Jr Jiang, S. Dai, Yu-Min Lin, P. Peng, S. Chi","doi":"10.1364/JON.8.000188","DOIUrl":"https://doi.org/10.1364/JON.8.000188","url":null,"abstract":"This study discusses two key technologies used in radio-over-fiber (RoF) systems, namely, the generation and transmission of millimeter-wave signals and optical modulation schemes capable of carrying vector signal formats and utilizing the continuous performance improvements offered by digital signal processing. A cost-effective frequency-quadrupling technique capable of generating millimeter-wave signals up to 72 GHz is proposed. The generated optical millimeter-wave signals have very high quality, with an optical carrier and harmonic distortion suppression ratio exceeding 36 dB. An optical modulation scheme that can support a 64-QAM, 16 Gbits/s orthogonal frequency-division multiplexing RoF system is also demonstrated. Results of this study demonstrate that both methods offer realistic solutions to support future wireless systems.","PeriodicalId":49154,"journal":{"name":"Journal of Optical Networking","volume":"8 1","pages":"188-200"},"PeriodicalIF":0.0,"publicationDate":"2009-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1364/JON.8.000188","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66592650","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}
The main challenge for present and future personal communication systems and personal communication networks stems from the exponentially growing user demand. Radio over fiber (RoF), the combination of optical and wireless technologies, has many advantages and a wide range of applications. The 3G wireless communication technology uses wideband code division multiple access (WCDMA) standards to support the broadband services, and RoF technology will be an appropriate candidate in such environments. This paper presents what is believed to be a novel double-spreading mechanism, both in the wireless and optical domains for the cascaded RoF systems. Although a star configuration is the most popular because of its easy maintenance, the cascade or bus configuration can reduce the fiber counts and is hence cost-effective. Simulation studies on bit-error-rate performance for different numbers of users using orthogonal variable spread factor (OVSF) codes in the wireless domain and Walsh-Hadamard codes for optical code division multiple access (OCDMA) in the optical domain have been carried out. Hence, in view of less system complexity and cost, the proposed double-spreading technique would be an ideal solution for WCDMA-based wireless systems and the upcoming 4G with backbone cascaded RoF networks.
{"title":"Double-spread radio-over-fiber system for next-generation wireless technologies","authors":"A. Alphones","doi":"10.1364/JON.8.000225","DOIUrl":"https://doi.org/10.1364/JON.8.000225","url":null,"abstract":"The main challenge for present and future personal communication systems and personal communication networks stems from the exponentially growing user demand. Radio over fiber (RoF), the combination of optical and wireless technologies, has many advantages and a wide range of applications. The 3G wireless communication technology uses wideband code division multiple access (WCDMA) standards to support the broadband services, and RoF technology will be an appropriate candidate in such environments. This paper presents what is believed to be a novel double-spreading mechanism, both in the wireless and optical domains for the cascaded RoF systems. Although a star configuration is the most popular because of its easy maintenance, the cascade or bus configuration can reduce the fiber counts and is hence cost-effective. Simulation studies on bit-error-rate performance for different numbers of users using orthogonal variable spread factor (OVSF) codes in the wireless domain and Walsh-Hadamard codes for optical code division multiple access (OCDMA) in the optical domain have been carried out. Hence, in view of less system complexity and cost, the proposed double-spreading technique would be an ideal solution for WCDMA-based wireless systems and the upcoming 4G with backbone cascaded RoF networks.","PeriodicalId":49154,"journal":{"name":"Journal of Optical Networking","volume":"8 1","pages":"225-234"},"PeriodicalIF":0.0,"publicationDate":"2009-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1364/JON.8.000225","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66592920","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}
A novel media access control (MAC) protocol named carrier sense multiple access with idle detection (CSMA/ID) is proposed to handle variable-length packets over an all-optical ring network. To evaluate optimal utilization of channel bandwidth, we study packet scheduling based on three transmitting queue discipline (TQD) architectures and four idle space allocation (ISA) algorithms with regard to their impact on performance. For numerical evaluation of performance, an analytical model is developed by a preclassification queue with weighted round-robin (PCQWRR) architecture and a random algorithm. Moreover, three related MAC protocols are examined and compared, namely, multitoken, carrier sense multiple access/collision avoidance (CSMA/CA) and carrier sense multiple access/collision preemption (CSMA/CP). Simulation results indicate that, of the TQDs, better performance is obtained by PCQWRR compared with first-in-first-out and preclassification queues. The first fit space (FFS) algorithm has the best performance of the ISAs. The 12 combinations of TQDs-ISAs are then considered. It is found that the combination of PCQWRR with FFS provides the greatest efficiency and has the lowest packet latency, providing better throughput than three different MAC protocols under either symmetric or asymmetric traffic load on all-optical ring networks.
提出了一种新的媒体访问控制协议CSMA/ID (carrier sense multiple access with idle detection)，用于处理全光环网中的变长分组。为了评估信道带宽的最佳利用率，我们研究了基于三种传输队列规则(TQD)架构和四种空闲空间分配(ISA)算法的分组调度，以及它们对性能的影响。为了对性能进行数值评价，建立了基于加权轮询(PCQWRR)结构的预分类队列和随机算法的分析模型。此外，研究并比较了三种相关的MAC协议，即多令牌、载波感知多址/冲突避免(CSMA/CA)和载波感知多址/冲突抢占(CSMA/CP)。仿真结果表明，在tqd中，PCQWRR比先进先出和预分类队列具有更好的性能。其中，第一拟合空间(FFS)算法的性能最好。然后考虑了tqds - isa的12种组合。研究发现，在全光环网中，PCQWRR与FFS的组合具有最高的效率和最低的数据包延迟，在对称或非对称流量负载下提供比三种不同MAC协议更好的吞吐量。
{"title":"Novel MAC protocol with idle detection for all-optical WDM ring networks","authors":"Wen-Ping Chen, Jih-Hsin Ho, W. Hwang, C. Shieh","doi":"10.1364/JON.8.000112","DOIUrl":"https://doi.org/10.1364/JON.8.000112","url":null,"abstract":"A novel media access control (MAC) protocol named carrier sense multiple access with idle detection (CSMA/ID) is proposed to handle variable-length packets over an all-optical ring network. To evaluate optimal utilization of channel bandwidth, we study packet scheduling based on three transmitting queue discipline (TQD) architectures and four idle space allocation (ISA) algorithms with regard to their impact on performance. For numerical evaluation of performance, an analytical model is developed by a preclassification queue with weighted round-robin (PCQWRR) architecture and a random algorithm. Moreover, three related MAC protocols are examined and compared, namely, multitoken, carrier sense multiple access/collision avoidance (CSMA/CA) and carrier sense multiple access/collision preemption (CSMA/CP). Simulation results indicate that, of the TQDs, better performance is obtained by PCQWRR compared with first-in-first-out and preclassification queues. The first fit space (FFS) algorithm has the best performance of the ISAs. The 12 combinations of TQDs-ISAs are then considered. It is found that the combination of PCQWRR with FFS provides the greatest efficiency and has the lowest packet latency, providing better throughput than three different MAC protocols under either symmetric or asymmetric traffic load on all-optical ring networks.","PeriodicalId":49154,"journal":{"name":"Journal of Optical Networking","volume":"8 1","pages":"112-129"},"PeriodicalIF":0.0,"publicationDate":"2009-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1364/JON.8.000112","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66592376","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}
N. Gomes, M. Morant, A. Alphones, B. Cabon, J. Mitchell, C. Lethien, M. Csörnyei, A. Stöhr, S. Iezekiel
Some of the work carried out within the EU Network of Excellence ISIS on radio-over-fiber systems for the support of current and emerging wireless networks is reviewed. Direct laser modulation and externally modulated links have been investigated, and demonstrations of single-mode fiber and multimode fiber systems are presented. The wireless networks studied range from personal area networks (such as ZigBee and ultrawideband) through wireless local area networks to wireless metropolitan area networks (WiMAX) and third-generation mobile communications systems. The performance of the radio-over-fiber transmission is referenced to the specifications of the relevant standard, protocol operation is verified, and complete network demonstrations are implemented.
{"title":"Radio-over-fiber transport for the support of wireless broadband services [Invited]","authors":"N. Gomes, M. Morant, A. Alphones, B. Cabon, J. Mitchell, C. Lethien, M. Csörnyei, A. Stöhr, S. Iezekiel","doi":"10.1364/JON.8.000156","DOIUrl":"https://doi.org/10.1364/JON.8.000156","url":null,"abstract":"Some of the work carried out within the EU Network of Excellence ISIS on radio-over-fiber systems for the support of current and emerging wireless networks is reviewed. Direct laser modulation and externally modulated links have been investigated, and demonstrations of single-mode fiber and multimode fiber systems are presented. The wireless networks studied range from personal area networks (such as ZigBee and ultrawideband) through wireless local area networks to wireless metropolitan area networks (WiMAX) and third-generation mobile communications systems. The performance of the radio-over-fiber transmission is referenced to the specifications of the relevant standard, protocol operation is verified, and complete network demonstrations are implemented.","PeriodicalId":49154,"journal":{"name":"Journal of Optical Networking","volume":"8 1","pages":"156-178"},"PeriodicalIF":0.0,"publicationDate":"2009-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1364/JON.8.000156","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66592888","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}
Z. Jia, Jianjun Yu, Y. Hsueh, H. Chien, A. Chowdhury, G. Chang
We experimentally demonstrate several key technologies to further explore the converged benefits of optical and wireless systems to offer wireless high-definition (HD) services for both fixed and mobile users. These technologies include spectrum-efficient multiband generation and dispersion-tolerant transmission, long-reach transmission without dispersion compensation, and a transport feasibility study for flexible optical routing using multiple reconfigurable optical add-drop multiplexers (ROADMs). Using the developed system, we successfully implement the testbed trial on the delivery of uncompressed 270 Mbits/s standard-definition television and 1.485 Gbits/s HD television video signals over optical fiber and air links.
{"title":"Wireless high-definition services over optical fiber networks","authors":"Z. Jia, Jianjun Yu, Y. Hsueh, H. Chien, A. Chowdhury, G. Chang","doi":"10.1364/JON.8.000235","DOIUrl":"https://doi.org/10.1364/JON.8.000235","url":null,"abstract":"We experimentally demonstrate several key technologies to further explore the converged benefits of optical and wireless systems to offer wireless high-definition (HD) services for both fixed and mobile users. These technologies include spectrum-efficient multiband generation and dispersion-tolerant transmission, long-reach transmission without dispersion compensation, and a transport feasibility study for flexible optical routing using multiple reconfigurable optical add-drop multiplexers (ROADMs). Using the developed system, we successfully implement the testbed trial on the delivery of uncompressed 270 Mbits/s standard-definition television and 1.485 Gbits/s HD television video signals over optical fiber and air links.","PeriodicalId":49154,"journal":{"name":"Journal of Optical Networking","volume":"8 1","pages":"235-243"},"PeriodicalIF":0.0,"publicationDate":"2009-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1364/JON.8.000235","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66592922","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}
C. Park, Yong-xin Guo, L. Ong, Y. Yeo, Yixin Wang, Mingtuo Zhou, H. Harada
A 60 GHz radio-over-fiber (RoF) network using an electroabsorption modulator (EAM) is presented. A photonic frequency upconversion technique that utilizes the wavelength conversion process in the EAM is adopted for seamless integration of optical and wireless networks. The transmission characteristics of the quadrature amplitude modulation (QAM) coded data signal over the 60 GHz photonic-wireless link, which comprises the 50 km optical fiber transmission between the central station and the base station (BS) and the aerial transmission between the BS and the customer unit using horn antennas, are investigated by measuring the error vector magnitude (EVM) and its dependence on the EAM bias voltage. Optimized EVM values of 3.8% and 3.9% are obtained for 64-QAM and 16-QAM at an EAM bias of −0.8 V, respectively.
{"title":"Application of an electroabsorption modulator in radio-over-fiber networks [Invited]","authors":"C. Park, Yong-xin Guo, L. Ong, Y. Yeo, Yixin Wang, Mingtuo Zhou, H. Harada","doi":"10.1364/JON.8.000146","DOIUrl":"https://doi.org/10.1364/JON.8.000146","url":null,"abstract":"A 60 GHz radio-over-fiber (RoF) network using an electroabsorption modulator (EAM) is presented. A photonic frequency upconversion technique that utilizes the wavelength conversion process in the EAM is adopted for seamless integration of optical and wireless networks. The transmission characteristics of the quadrature amplitude modulation (QAM) coded data signal over the 60 GHz photonic-wireless link, which comprises the 50 km optical fiber transmission between the central station and the base station (BS) and the aerial transmission between the BS and the customer unit using horn antennas, are investigated by measuring the error vector magnitude (EVM) and its dependence on the EAM bias voltage. Optimized EVM values of 3.8% and 3.9% are obtained for 64-QAM and 16-QAM at an EAM bias of −0.8 V, respectively.","PeriodicalId":49154,"journal":{"name":"Journal of Optical Networking","volume":"8 1","pages":"146-155"},"PeriodicalIF":0.0,"publicationDate":"2009-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1364/JON.8.000146","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66592815","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：