Adaptive Optics Theory And Its Application In Optical Wireless Communication
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Adaptive Optics Theory And Its Application In Optical Wireless Communication
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Author : Xizheng Ke
language : en
Publisher: Springer Nature
Release Date : 2022-03-23
Adaptive Optics Theory And Its Application In Optical Wireless Communication written by Xizheng Ke and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-03-23 with Technology & Engineering categories.
This book introduces in detail the theory of adaptive optics and its correction technology for light wave distortion in wireless optical communication. It discusses the adaptive control algorithm of wavefront distortion, proportional+integral control algorithm and iterative control algorithm, and double fuzzy adaptive PID control algorithm. It also covers the SPGD algorithm of adaptive optics correction, deformable mirrors eigenmode method of wavefront aberration correction, vortex beam wavefront detecting wavefront aberration correction, liquid crystal spatial light modulator wavefront correction, different wavelengths of Gaussian beam transmission wavefront differences in the atmospheric turbulence and correction and with wavefront tilt correction adaptive optics wavefront aberration correction. Various distortion correction methods are verified by experiments and the experimental results are analyzed. This book is suitable for engineering and technical personnel engaged in wireless optical communication, college teachers, graduate students and senior undergraduate students.
Handbook Of Optical Wireless Communication
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Author : Xizheng Ke
language : en
Publisher: Springer Nature
Release Date : 2024-08-02
Handbook Of Optical Wireless Communication written by Xizheng Ke and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-08-02 with Technology & Engineering categories.
The book focuses on optical wireless communication systems. It summarises the author's work on optical wireless communication during the implementation of relevant scientific research plans. The main contents include the research status and progress of optical wireless communication, including the author's own work in this field and the research progress of domestic and foreign scholars in related fields. The key technologies, key components, modulation and coding methods, influencing factors of coherent optical communication, underwater optical communication, visible light communication, and orbital angular momentum involved in wireless optical communication are analysed, and their research progress and development trends are presented. It is particularly suitable for readers interested in the field of wireless optical communications. This book can benefit researchers, engineers and graduate students in the field of telecommunications. Suitable for engineering and technical personnel involved in optical communications, university teachers, postgraduate students and advanced undergraduates.
Coherent Optical Wireless Communication Principle And Application
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Author : Xizheng Ke
language : en
Publisher: Springer Nature
Release Date : 2022-11-30
Coherent Optical Wireless Communication Principle And Application written by Xizheng Ke and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-11-30 with Technology & Engineering categories.
This book presents the key technologies of coherent optical wireless communication, covers topics such as beam coupling, signal optical polarization control and distorted wavefront correction. It discusses the principle of coherent optical communication and heterodyne detection conditions. In this book, the array coupling receiving technology and large aperture coupling technology are introduced to realize the spatial optical fiber coupling; simulated annealing algorithm, particle swarm optimization algorithm and SPO algorithm are used to control the polarization state of the signal beam; and the correction of distorted wavefront of the signal beam by adaptive optics technology and wavefront sensorless adaptive optics technology are analyzed, and the influence of beam mode on coherent detection performance is elaborated. Both theoretical deduction and experimental results are included in this book, which can help readers further understand the theoretical knowledge.
Partially Coherent Optical Transmission Theory In Optical Wireless Communication
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Author : Xizheng Ke
language : en
Publisher: Springer Nature
Release Date : 2024-10-30
Partially Coherent Optical Transmission Theory In Optical Wireless Communication written by Xizheng Ke and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-10-30 with Technology & Engineering categories.
This book introduces the theory and research methods of partially coherent optical, points out the significance of this study, analyzes the basic theories involved in partially coherent light, and explains the complete coherence of laser is not a necessary condition for good directivity, and partially spatially coherent optical sources can also produce the same far-field intensity distribution as lasers. This type of beam with good directivity but only partial spatial coherence is called a Gaussian Schell model beam, which can be used as a physical model to describe multimode lasers under certain conditions. This book is applicable to the large number of engineers and technicians involved in wireless optical communication and college teachers. It can also be used as a teaching material for graduate students and senior undergraduates in related fields.
Space Time Coding Theory In Optical Wireless Mimo Systems
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Author : Xizheng Ke
language : en
Publisher: Springer Nature
Release Date : 2025-06-16
Space Time Coding Theory In Optical Wireless Mimo Systems written by Xizheng Ke and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2025-06-16 with Technology & Engineering categories.
This book is divided into 12 chapters, including introduction, multi-aperture transmit/receive technology in turbulent atmosphere, channel model and channel capacity, orthogonal space-time block coding, layered space-time coding, hybrid space-time coding, space-time trellis coding, differential space-time coding, unitary space-time coding, adaptive layered space-time coding, performance analysis of indoor MIMO-VLC system, and detection algorithm of MIMO technology. The key technologies of wireless optical MIMO systems are introduced, and the basic framework of space-time coding of wireless optical MIMO systems is proposed.
Noise Models In Optical Wireless Communication Systems
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Author : Xizheng Ke
language : en
Publisher: Springer Nature
Release Date : 2024-11-13
Noise Models In Optical Wireless Communication Systems written by Xizheng Ke and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-11-13 with Technology & Engineering categories.
The book focuses on noise models in optical-wireless communication systems. The main contents include noise classification in optical-wireless communication systems, as well as the current research progress at home and abroad, explores the noise mechanism in optical-wireless communication systems, as well as the establishment of a noise model and analysis methods to suppress the noise of optical-wireless communication systems. Combining theory with practice, systematic analysis of all kinds of noise in optical-wireless communication system, so that readers have a comprehensive understanding of the noise in optical-wireless communication system, which is an important feature of this book. The book can benefit senior college students in electronic information, communication engineering, and applied optical majors, as well as graduates, engineers, and technical personnel, etc.
Performance Improvement Limits In Optical Wireless Coherent Communication
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Author : Xizheng Ke
language : en
Publisher: Springer Nature
Release Date : 2025-03-14
Performance Improvement Limits In Optical Wireless Coherent Communication written by Xizheng Ke and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2025-03-14 with Technology & Engineering categories.
This book presents some of the recent developments in the field of optical-wireless coherence communication. The factors affecting the coherence detection sensitivity are analyzed and the approach to approximate the coherence detection limit is discussed. The wavefront distortion caused by atmospheric turbulence is analyzed, and the influence of the wavefront distortion on the coherence detection performance is examined. A new concept of vortex-beam coherence-detection is proposed, and the problem of signal light decomposition into partially coherent light detection is analyzed. This book can benefit researchers, engineers, and graduate students in the field of telecommunications. It is suitable for engineering and technical personnel engaged in applied optics and communications engineering, university teachers, graduate students, and senior undergraduates.
Spatial Optical Fiber Coupling Technology In Optical Wireless Communication
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Author : Xizheng Ke
language : en
Publisher: Springer Nature
Release Date : 2023-07-01
Spatial Optical Fiber Coupling Technology In Optical Wireless Communication written by Xizheng Ke and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-07-01 with Technology & Engineering categories.
This book analyzes the development of space light-fiber coupling research, highlights its importance, examines the underlying theory and key problems, and elaborates on methods to improve the space light-fiber coupling efficiency. Starting from the basic theory of electromagnetic field, the transmission characteristics of light in optical fibers are expounded, and the coupling characteristics of optical signals of different modes are investigated. The spatial light-fiber coupling techniques such as mode conversion method, lens coupling method, and wavefront distortion correction method are discussed in detail, and the key technologies involved are verified by experiments. This book is suitable for the vast majority of engineering and technical personnel and teachers in colleges and institutions who are engaged in wireless optical communication. It can also be used to train senior undergraduates and graduate students in relevant fields.
Generation Transmission Detection And Application Of Vortex Beams
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Author : Xizheng Ke
language : en
Publisher: Springer Nature
Release Date : 2023-05-27
Generation Transmission Detection And Application Of Vortex Beams written by Xizheng Ke and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-05-27 with Technology & Engineering categories.
This book focuses on the key technologies supporting orbital-angular-momentum multiplexing communication: generation, transmission, detection, and application of vortex beams. A series of methods for generating vortex beams are described and compared in detail. Laguerre-Gaussian and Bessel-Gaussian beams are taken as examples to introduce the transport properties of vortex beams in atmospheric turbulence. The authors show that superposition of vortex beam state, interference, diffraction, and grating can realize the detection of the topological charge of vortex beams. The authors also introduce the application of vortex beams in optical communication and the transmission characteristics of partially coherent vortex beams in atmospheric turbulence. Finally, the authors describe vortex beam information exchange and channel reconstruction.
Optical Wireless Communications
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Author : Murat Uysal
language : en
Publisher: Springer
Release Date : 2016-08-25
Optical Wireless Communications written by Murat Uysal and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-08-25 with Technology & Engineering categories.
This book focuses on optical wireless communications (OWC), an emerging technology with huge potential for the provision of pervasive and reliable next-generation communications networks. It shows how the development of novel and efficient wireless technologies can contribute to a range of transmission links essential for the heterogeneous networks of the future to support various communications services and traffic patterns with ever-increasing demands for higher data-transfer rates. The book starts with a chapter reviewing the OWC field, which explains different sub-technologies (visible-light, ultraviolet (UV) and infrared (IR) communications) and introduces the spectrum of application areas (indoor, vehicular, terrestrial, underwater, intersatellite, deep space, etc.). This provides readers with the necessary background information to understand the specialist material in the main body of the book, which is in four parts. The first of these deals with propagation modelling and channel characterization of OWC channels at different spectral bands and with different applications. The second starts by providing a unified information-theoretic treatment of OWC and then discusses advanced physical-layer methodologies (including, but not limited to: advanced coding, modulation diversity, cooperation and multi-carrier techniques) and the ultimate limitations imposed by practical constraints. On top of the physical layer come the upper-layer protocols and cross-layer designs that are the subject of the third part of the book. The last part of the book features a chapter-by-chapter assessment of selected OWC applications. Optical Wireless Communications is a valuable reference guide for academic researchers and practitioners concerned with the future development of the world’s communication networks. It succinctly but comprehensively presents the latest advances in the field.