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现代数字和模拟通信系统
An ideal first text on communication systems in electrical engineering, Modern Digital and Analog Communication Systems is now in its fourth edition. Retaining the superb pedagogical style of the first three editions, the authors first introduce the fundamentals of signals and systems and core communication topics; they then present the tools essential to the design and analysis of digital communications. Featuring a seamless blend of mathematics and heuristics, carefully crafted examples to clarify mathematical abstractions, and new and updated MATLAB exercises, this text provides a thorough coverage of modern communication system theory and application that is easily accessible to students.
Modern Digital and Analog Communication Systems is suitable for students with or without prior knowledge of probability theory. Only after laying a solid foundation in how communication systems work do the authors delve into analyses of communication systems that require probability theory and random processes. Revised, expanded, and updated throughout, the fourth edition reflects the many technological advances in the field, such as OFDM and CDMA, pervasive communication applications such as cellular systems, wireless LAN systems, and DSL modem technology services.
New to this Edition
* New discussion of technological advances and applications
* New chapters (12 and 13) on spread spectrum communications and frequency selective channels and OFDM systems
* New and updated MATLAB examples
* New material on such topics as code division multiple-access (CDMA), orthogonal frequency division multiplexing (OFDM), equalization, soft decoding, turbo codes, and low-density parity check (LDPC) codes
Features
* Flexible organization (outlined in the preface) that accommodates a variety of course structures, including one-semester, two-semester, one-quarter, and two-quarter
* Accessible to students with no background in probability theory
* Abundant real-world examples that are applicable to students' everyday lives
* Gives intuitive insights--rather than just proofs--wherever possible, as well as heuristic explanations of theoretical results
2013-10-07
移动衰落信道Mobile Fading Channels
移动通信中信号随接受机与发射机之间的距离不断变化即产生了衰落。其中,信号强度曲线的中直呈现慢速变化,称为慢衰落;曲线的瞬时值呈快速变化,称快衰落。可见快衰落与慢衰落并不是两个独立的衰落(虽然他们的产生原因不同),快衰落反映的是瞬时值,慢衰落反映的是瞬时值加权平均后的中值。
2013-10-07
数据压缩原理与应用
数据压缩是现代计算最重要的领域和工具之一。从获取数据到CD-ROM,从编码理论到图像处理,现代计算的许多层面都依赖于数据压缩。本书对数据压缩的许多不同类型和方示提供了全面的参考。内容包括详尽而有益的分类、最常用方法的描述、方法使用和获益的比较以及“如何”应用的讨论。全书的介绍沿数据的压缩领域的主干来组织、游程编码、统计方法、基于字典的方法、图像压缩、音频压缩和视频压缩。
数据压缩是现代计算最重要的领域和工具之一。从获取数据到CD-ROM,从编码理论到图像处理,现代计算的许多层面都依赖于数据压缩。本书对数据压缩的许多不同类型和方示提供了全面的参考。内容包括详尽而有益的分类、最常用方法的描述、方法使用和获益的比较以及“如何”应用的讨论。全书的介绍沿数据的压缩领域的主干来组织、游程编码、统计方法、基于字典的方法、图像压缩、音频压缩和视频压缩。该书的主要主题为:视频压缩、小波方法、音频压缩、用于JPEG和JBIG的QM编码器、图像变换、用于压缩简单图像的EIDAC方法、前缀图像压缩、ACB和FHM曲线压缩和边缘破碎法。 本书为所有的计算机科学家、计算机工程师、电气工程师、信号/图像处理工程师,以及其他需要一部压缩方法大全的科学家们,提供了一本十分宝贵的参考和指南。
2013-10-07
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