OFDM FOR OPTICAL COMMUNICATIONS

OFDM FOR OPTICAL COMMUNICATIONS pdf epub mobi txt 电子书 下载 2026

出版者:ACADEMIC PRESS
作者:William Shieh
出品人:
页数:456 pages
译者:
出版时间:OCT-2009
价格:USD 119.95
装帧:Hardbound
isbn号码:9780123748799
丛书系列:
图书标签:
  • OFDM
  • Optical Communications
  • Wireless Communications
  • Signal Processing
  • Modulation
  • Fiber Optics
  • Data Transmission
  • Telecommunications
  • Photonics
  • Networking
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具体描述

The first book on optical OFDM by the leading pioneers in the field The only book to cover error correction codes for optical OFDM Gives applications of OFDM to free-space communications, optical access networks, and metro and log haul transports show optical OFDM can be implemented Contains introductions to signal processing for optical engineers and optical communication fundamentals for wireless engineers This book gives a coherent and comprehensive introduction to the fundamentals of OFDM signal processing, with a distinctive focus on its broad range of applications. It evaluates the architecture, design and performance of a number of OFDM variations, discusses coded OFDM, and gives a detailed study of error correction codes for access networks, 100 Gb/s Ethernet and future optical networks. The emerging applications of optical OFDM, including single-mode fiber transmission, multimode fiber transmission, free space optical systems, and optical access networks are examined, with particular attention paid to passive optical networks, radio-over-fiber, WiMAX and UWB communications. Written by two of the leading contributors to the field, this book will be a unique reference for optical communications engineers and scientists. Students, technical managers and telecom executives seeking to understand this new technology for future-generation optical networks will find the book invaluable. William Shieh is an associate professor and reader in the electrical and electronic engineering department, The University of Melbourne, Australia. He received his M.S. degree in electrical engineering and Ph.D. degree in physics both from University of Southern California. Ivan Djordjevic is an Assistant Professor of Electrical and Computer Engineering at the University of Arizona, Tucson, where he directs the Optical Communications Systems Laboratory (OCSL). His current research interests include optical networks, error control coding, constrained coding, coded modulation, turbo equalization, OFDM applications, and quantum error correction. "This wonderful book is the first one to address the rapidly emerging optical OFDM field. Written by two leading researchers in the field, the book is structured to comprehensively cover any optical OFDM aspect one could possibly think of, from the most fundamental to the most specialized. The book adopts a coherent line of presentation, while striking a thoughtful balance between the various topics, gradually developing the optical-physics and communication-theoretic concepts required for deep comprehension of the topic, eventually treating the multiple optical OFDM methods, variations and applications. In my view this book will remain relevant for many years to come, and will be increasingly accessed by graduate students, accomplished researchers as well as telecommunication engineers and managers keen to attain a perspective on the emerging role of OFDM in the evolution of photonic networks." -- Prof.Moshe Nazarathy, EE Dept., Technion, Israel Institute of Technology

* The first book on optical OFDM by the leading pioneers in the field

* The only book to cover error correction codes for optical OFDM

* Applications of OFDM to free-space communications, optical access networks, and metro and log haul transports show optical OFDM can be implemented

* An introduction to signal processing for optical communications

* An introduction to optical communication fundamentals for the wireless engineer

面向下一代光通信系统的先进调制与编码技术研究 书籍简介 本书深入探讨了在高速、大容量、高频谱效率的光通信系统背景下,一系列关键的调制、编码和信号处理技术。随着数据速率的不断攀升,传统的光通信技术面临着色散、非线性效应以及噪声瓶颈的严峻挑战。本书旨在为研究人员、工程师以及高级学生提供一套全面且深入的理论框架与实践指导,以应对这些前沿挑战,推动光通信系统性能的持续进步。 第一部分:光通信系统的基础与挑战 本部分首先回顾了现代光通信系统的基本架构,包括光纤传输链路的物理特性(如损耗、色散和非线性效应)。重点分析了当前高速光通信系统面临的主要瓶颈:如何有效提升单位带宽内的传输比特率(频谱效率),同时保持极低的误码率(BER)。我们将详细剖析先进调制格式的引入如何从根本上改变系统的性能边界。 第二部分:高阶相干调制格式的深入解析 相干光通信技术是当前超高速骨干网的核心。本书系统地介绍了从QPSK到高阶QAM(如16-QAM, 64-QAM)的演变过程。 星座图设计与优化: 详细讨论了如何构建具有均匀功率分布和良好抗噪声特性的星座图。特别关注了在光信噪比(OSNR)有限制的情况下,不同高阶QAM格式的性能权衡。 信号处理的复杂性: 阐述了相干接收机中数字信号处理(DSP)的关键环节,包括载波相位估计、频率同步、定时同步以及色散补偿。对于高阶调制,我们着重分析了如何利用先进的盲均衡算法(如最大似然序列估计MLSE的近似方法)来有效对抗色散和载波相位噪声。 多维调制: 探讨了利用偏振复用(PDM)技术,将二维星座扩展到四维传输,从而在不牺牲频谱效率的情况下,提升整体传输速率的原理与实现。 第三部分:先进的前向纠错(FEC)编码技术 为了在接近香农极限的信道条件下可靠传输信息,高性能的前向纠错技术至关重要。本书超越了传统的卷积码和译码,聚焦于当前光通信领域最具前瞻性的几种编码方案: Turbo码在光通信中的应用: 详细分析了Turbo码的结构(交织器、迭代译码),并探讨了其在降低光通信系统门限方面的潜力,尽管其高延迟特性在某些场景下构成挑战。 低密度奇偶校验码(LDPC): 作为目前公认的最佳通用信道编码之一,本书对LDPC码进行了详尽的介绍。包括其稀疏校验矩阵的构建、消息传递译码(如信仰传播算法BP)的原理,以及如何针对光通信的特定信道模型(如高斯信道)来优化LDPC的构造和译码性能。 有限距离与软判决译码: 讨论了如何结合调制解调(MODEM)输出的软信息,实现更高效的译码增益。对比了硬判决与软判决FEC在提升OSNR容限方面的差异。 第四部分:信道均衡与非线性补偿策略 随着传输速率的提升和传输距离的增加,光纤的非线性效应(如自相位调制SPM、交叉相位调制XPM、四波混频FWM)成为限制系统性能的主要障碍。 频域均衡(FBE)与时域均衡(TBE): 对比分析了两种主要的线性均衡方法。详细介绍了如何利用快速傅里叶变换(FFT)实现高效的频域均衡器,用于补偿传输色散。对于时域均衡,则侧重于基于有限脉冲响应(FIR)滤波器的自适应均衡算法。 基于机器学习的非线性均衡: 这是一个新兴且快速发展的领域。本书探讨了如何利用神经网络(如深度神经网络DNN或循环神经网络RNN)来建模复杂的光纤非线性信道,并实现非线性的补偿。重点讨论了训练数据需求、网络结构设计以及实时处理的挑战。 第五部分:面向未来的技术展望 最后,本书展望了未来光通信技术的发展方向,这些技术旨在进一步突破现有速率限制,例如: 概率整形(Probabilistic Shaping, PS): 介绍如何根据瞬时信道状况(或预估的OSNR波动)动态调整符号的发射概率分布,以最大化信息吞吐量,实现“比特-功耗”或“比特-距离”的最优折衷。 空分复用(SDM)与多芯光纤: 探讨了如何将先进的调制编码技术应用于多维传输系统,以实现超大容量的集成化传输。 本书的特色在于其严谨的数学推导、对关键算法的详细阐述,以及对理论模型与实际系统性能之间关系的深入探讨,为构建下一代超高速、超长距离的无缝光网络提供了坚实的理论与工程基础。

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