Utilizing Diversity In Digital Self Coherent Detection Schemes For Approaching Coherent Performance
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Utilizing Diversity In Digital Self Coherent Detection Schemes For Approaching Coherent Performance
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Author : Adam Magen
language : en
Publisher:
Release Date : 2012
Utilizing Diversity In Digital Self Coherent Detection Schemes For Approaching Coherent Performance written by Adam Magen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with categories.
Direct Detection And Self Coherent Detection Short Reach Optical Communication Systems For Data Center Networking
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Author : Zhenping Xing
language : en
Publisher:
Release Date : 2021
Direct Detection And Self Coherent Detection Short Reach Optical Communication Systems For Data Center Networking written by Zhenping Xing and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021 with categories.
"In this thesis, we aim at exploring the potentials and the limits of O-band intensity modulation direct detection (IM/DD) systems and C-band single sideband (SSB)/vestigial sideband (VSB) self-coherent detection systems for data center networking applications based on current technologies and advanced DSP algorithms. For the O-band IM/DD system, we start from a 400 Gb/s 4-[lambda] coarse wavelength division multiplexing (CWDM4) 4-level pulse amplitude modulation (PAM4) transmission system based on a commercial transmitter optical sub-assembly (TOSA). We experimentally show that by using faster-than-Nyquist (FTN) technologies, we can increase the total net rate to 600 Gb/s at 2 km and 10 km. We also propose a wavelength-interleaved four dimensional-PAM4-trellis coded modulation (4D-PAM4-TCM) scheme to improve the system's robustness against channel performance discrepancies caused by inter-channel component differences and the impacts of CD-chirp interactions. We experimentally show that the proposed scheme outperforms the conventional time-domain encoded 4D-PAM4-TCM scheme. The SSB/VSB self-coherent detection system can be regarded as an upgrade of the IM/DD system, which slightly increases the hardware complexity and the DSP complexity to acquire CD compensation capability. In this thesis, we first focus on experimental studies of amplified VSB self-coherent systems using silicon photonic (SiPh) devices. We demonstrate 100 Gb/s PAM4 transmissions over 40-80 km using a digital-to-analog converter (DAC)-less transmitter based on a SiPh multi-electrode Mach Zehnder modulator (MZM) and a VSB receiver. We also propose a filter-response aware iterative Kramers Kronig (FA-iter-KK) algorithm to replace the conventional field reconstruction algorithms in a VSB system, which utilizes the frequency response of the optical filter to improve the accuracy of the field reconstruction process in the presence of the residual sideband. We further demonstrate a tunable power splitter based parallel path structure on the SiPh platform to control the carrier-to-signal power ratio (CSPR) in a VSB system. In addition, we numerically study the transmission performance and the power consumption of IQ modulator based SSB systems and single MZM based VSB systems in unamplified loss limited links over 40 km. We compare the best achievable performance of two CSPR control schemes, i.e. the bias tuning scheme and the parallel path structure based scheme, and we reveal that the choice of the CSPR control scheme depends on the swing of the driving voltage and the half-wave voltage of the modulator. We also compare the power consumption of different SSB/VSB self-coherent detections systems processed with different field reconstruction algorithms, including the FA-iter-KK algorithm we propose. We show that in an IQ modulator based SSB system, the iterative KK algorithm (with one iteration) is the most power efficient algorithm, but a VSB system processed with the FA-iter-KK algorithm (with one iteration) has the potential to achieve an even lower total system power consumption. We think this work can provide some guidance on practical implementations of SSB/VSB self-coherent detection systems"--
Digital Communications Test And Measurement
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Author : Dennis Derickson
language : en
Publisher: Pearson Education
Release Date : 2007-12-10
Digital Communications Test And Measurement written by Dennis Derickson and has been published by Pearson Education this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-12-10 with Technology & Engineering categories.
A Comprehensive Guide to Physical Layer Test and Measurement of Digital Communication Links Today's new data communication and computer interconnection systems run at unprecedented speeds, presenting new challenges not only in the design, but also in troubleshooting, test, and measurement. This book assembles contributions from practitioners at top test and measurement companies, component manufacturers,and universities. It brings together information that has never been broadly accessible before—information that was previously buried in application notes, seminar and conference presentations, short courses, and unpublished works. Readers will gain a thorough understanding of the inner workings of digital high-speed systems, and learn how the different aspects of such systems can be tested. The editors and contributors cover key areas in test and measurement of transmitters (digital waveform and jitter analysis and bit error ratio), receivers (sensitivity, jitter tolerance, and PLL/CDR characterization), and high-speed channel characterization (in time and frequency domain). Extensive illustrations are provided throughout. Coverage includes Signal integrity from a measurement point of view Digital waveform analysis using high bandwidth real-time and sampling (equivalent time) oscilloscopes Bit error ratio measurements for both electrical and optical links Extensive coverage on the topic of jitter in high-speed networks State-of-the-art optical sampling techniques for analysis of 100 Gbit/s + signals Receiver characterization: clock recovery, phase locked loops, jitter tolerance and transfer functions, sensitivity testing, and stressed-waveform receiver testing Channel and system characterization: TDR/T and frequency domain-based alternatives Testing and measuring PC architecture communication links: PCIexpress, SATA, and FB DIMM
Optically Amplified Wdm Networks
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Author : John Zyskind
language : en
Publisher: Academic Press
Release Date : 2011-01-26
Optically Amplified Wdm Networks written by John Zyskind and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-01-26 with Technology & Engineering categories.
With the advent of wavelength routing and dynamic, reconfigurable optical networks, new demands are being made in the design and operation of optical amplifiers. This book provides, for the first time, a comprehensive review of optical amplifier technology in the context of these recent advances in the field. It demonstrates how to manage the trade-offs between amplifier design, network architecture and system management and operation. The book provides an overview of optical amplifiers and reconfigurable networks before examining in greater detail the issues of importance to network operators and equipment manufacturers, including 40G and 100G transmission. Optical amplifier design is fully considered, focusing on fundamentals, design solutions and amplifier performance limitations. Finally, the book discusses other emerging applications for optical amplifiers such as optical networks for high data rate systems, free space systems, long single span links and optical digital networks. This book will be of great value to R&D engineers, network and systems engineers, telecommunications service providers, component suppliers, industry analysts, network operators, postgraduate students, academics and anyone seeking to understand emerging trends in optical networks and the consequent changes in optical amplifier design, features and applications. Provides an in depth and focused review of the new reconfigurable network architecture and its impact on optical amplifiers Addresses 40G and 100G transmission and networking Written by experts in the field with deep technical knowledge and practical experience of commercial practice and concerns
International Aerospace Abstracts
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Author :
language : en
Publisher:
Release Date : 1999
International Aerospace Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Aeronautics categories.
Mimo Ofdm For Lte Wifi And Wimax
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Author : Lajos Hanzo
language : en
Publisher: John Wiley & Sons
Release Date : 2010-11-01
Mimo Ofdm For Lte Wifi And Wimax written by Lajos Hanzo and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-11-01 with Technology & Engineering categories.
MIMO-OFDM for LTE, WIFI and WIMAX: Coherent versus Non-Coherent and Cooperative Turbo-Transceivers provides an up-to-date portrayal of wireless transmission based on OFDM techniques augmented with Space-Time Block Codes (STBCs) and Spatial-Division Multiple Access (SDMA). The volume also offers an in-depth treatment of cutting-edge Cooperative Communications. This monograph collates the latest techniques in a number of specific design areas of turbo-detected MIMO-OFDM wireless systems. As a result a wide range of topical subjects are examined, including channel coding and multiuser detection (MUD), with a special emphasis on optimum maximum-likelihood (ML) MUDs, reduced-complexity genetic algorithm aided near-ML MUDs and sphere detection. The benefits of spreading codes as well as joint iterative channel and data estimation are only a few of the radical new features of the book. Also considered are the benefits of turbo and LDPC channel coding, the entire suite of known joint coding and modulation schemes, space-time coding as well as SDM/SDMA MIMOs within the context of various application examples. The book systematically converts the lessons of Shannon's information theory into design principles applicable to practical wireless systems; the depth of discussions increases towards the end of the book. Discusses many state-of-the-art topics important to today's wireless communications engineers. Includes numerous complete system design examples for the industrial practitioner. Offers a detailed portrayal of sphere detection. Based on over twenty years of research into OFDM in the context of various applications, subsequently presenting comprehensive bibliographies.
Electrical Electronics Abstracts
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Author :
language : en
Publisher:
Release Date : 1997
Electrical Electronics Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Electrical engineering categories.
Coherent Optical Fiber Communications
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Author : T. Okoshi
language : en
Publisher: Springer Science & Business Media
Release Date : 1988-07-31
Coherent Optical Fiber Communications written by T. Okoshi and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988-07-31 with Technology & Engineering categories.
Optical Fiber Telecommunications Vii
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Author : Alan Willner
language : en
Publisher: Academic Press
Release Date : 2019-10-16
Optical Fiber Telecommunications Vii written by Alan Willner and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-10-16 with Technology & Engineering categories.
With optical fiber telecommunications firmly entrenched in the global information infrastructure, a key question for the future is how deeply will optical communications penetrate and complement other forms of communication (e.g., wireless access, on-premises networks, interconnects, and satellites). Optical Fiber Telecommunications, the seventh edition of the classic series that has chronicled the progress in the research and development of lightwave communications since 1979, examines present and future opportunities by presenting the latest advances on key topics such as: Fiber and 5G-wireless access networks Inter- and intra-data center communications Free-space and quantum communication links Another key issue is the use of advanced photonics manufacturing and electronic signal processing to lower the cost of services and increase the system performance. To address this, the book covers: Foundry and software capabilities for widespread user access to photonic integrated circuits Nano- and microphotonic components Advanced and nonconventional data modulation formats The traditional emphasis of achieving higher data rates and longer transmission distances are also addressed through chapters on space-division-multiplexing, undersea cable systems, and efficient reconfigurable networking. This book is intended as an ideal reference suitable for university and industry researchers, graduate students, optical systems implementers, network operators, managers, and investors. Quotes: "This book series, which owes much of its distinguished history to the late Drs. Kaminow and Li, describes hot and growing applied topics, which include long-distance and wideband systems, data centers, 5G, wireless networks, foundry production of photonic integrated circuits, quantum communications, and AI/deep-learning. These subjects will be highly beneficial for industrial R&D engineers, university teachers and students, and funding agents in the business sector." Prof. Kenichi Iga President (Retired), Tokyo Institute of Technology "With the passing of two luminaries, Ivan Kaminow and Tingye Li, I feared the loss of one of the premier reference books in the field. Happily, this new version comes to chronicle the current state-of-the-art and is written by the next generation of leaders. This is a must-have reference book for anyone working in or trying to understand the field of optical fiber communications technology." Dr. Donald B. Keck Vice President, Corning, Inc. (Retired) "This book is the seventh edition in the definitive series that was previously marshaled by the extraordinary Ivan Kaminow and Tingye Li, both sadly no longer with us. The series has charted the remarkable progress made in the field, and over a billion kilometers of optical fiber currently snake across the globe carrying ever-increasing Internet traffic. Anyone wondering about how we will cope with this incredible growth must read this book." Prof. Sir David Payne Director, Optoelectronics Research Centre, University of Southampton Updated edition presents the latest advances in optical fiber components, systems, subsystems and networks Written by leading authorities from academia and industry Gives a self-contained overview of specific technologies, covering both the state-of-the-art and future research challenges
Government Reports Announcements Index
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Author :
language : en
Publisher:
Release Date : 1994
Government Reports Announcements Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Science categories.