基本信息
書名:數字通信(第五版 英文精簡版)
定價:59.00元
作者:(美)普羅科斯,(美)薩利希,張力軍 等改編
齣版社:電子工業齣版社
齣版日期:2012-01-01
ISBN:9787121153259
字數:
頁碼:
版次:1
裝幀:平裝
開本:
商品重量:0.781kg
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內容提要
本書是在《數字通信(第五版)》的基礎上,根據國內的實際教學情況進行精簡和改編的。主要的精簡原則為:保留信號傳輸理論內容,捨去信息傳輸理論內容,並以傳統而經典的數字傳輸理論為主,無綫通信為輔。改編的部分主要是根據國內實際教學的常用習慣來進行的。精簡後的內容主要涵蓋:確定與*信號分析;數字調製方法;AWGN信道的*接收機;載波和符號同步;通過帶限信道的數字通信;自適應均衡;多信道和多載波係統;數字通信用擴頻信號;衰落信道:信道特徵與信號傳輸;多天綫係統。
目錄
Chapter 1Introduction
1.1 Elements of a Digital CommunicationSystem
1.2 Communication Channels and TheirCharacteristics
1.3 Mathematical Models for CommunicationChannels
1.4 A Historical Perspective in the Development of
Digitalommunications
Chapter 2 Deterministic and Random SignalAnalysis
2.1 Representation of Bandpass Signals andSystems
2.1–1 Representation of Bandpass Signals/ 2.1–2 Response of aBandpass System to a Bandpass Signal
2.2 Signal Space Representation ofWaveforms
2.2–1 Vector Space Concepts / 2.2–2 Signal Space Concepts / 2.2–3Orthogonal Expansions of Signals /2.2–4 Gram-SchmidtProcedure
2.3 Some Useful RandomVariables
2.4 RandomProcesses
2.4–1 Wide-Sense Stationary Random Processes /2.4–2Cyclostationary Random Processes
2.5 Series Expansion of RandomProcesses
2.5–1 Sampling Theorem for Band-Limited RandomProcesses /2.5–2 TheKarhunen-Lo`eve Expansion
2.6 Bandpass Stationary StochasticProcesses
Problems
Chapter 3 Digital ModulationSchemes
3.1 Representation of Digitally ModulatedSignals
3.2 Memoryless ModulationMethods
3.2–1 Pulse Amplitude Modulation (PAM) / 3.2–2 Phase Modulation /3.2–3 Quadrature Amplitude Modulation /3.2–4 MultidimensionalSignaling
3.3 Signaling Schemes withMemory
3.3–1 Continuous-Phase Frequency-Shift Keying(CPFSK) /
3.3–2 Continuous-Phase Modulation (CPM)
3.4 Power Spectrum of Digitally ModulatedSignals
3.4–1 Power Spectral Density of a Digitally ModulatedSignalwith
Memory / 3.4–2 Power Spectral Density of LinearlyModulated
Signals / 3.4–3 Power Spectral Density ofDigitally Modulated
Signals with Finite Memory / 3.4–4Power Spectral Density of
Modulation Schemes with a MarkovStructure / 3.4–5 Power
Spectral Densities of CPFSK and CPM Signals
Problems
Chapter 4 Optimum Receivers for AWGNChannels
4.1 Waveform and Vector ChannelModels
4.1–1 Optimal Detection for a General Vector Channel
4.2 Waveform and Vector AWGNChannels
4.2–1 Optimal Detection for the Vector AWGN Channel /4.2–2Implementation of the Optimal Receiver for AWGN Channels / 4.2–3 AUnion Bound on the Probability of Error of Maximum LikelihoodDetection
4.3 Optimal Detection and Error Probability for Band-Limited
Signaling
4.3–1 Optimal Detection and Error Probability for ASK or
PAM Signaling / 4.3–2 Optimal Detection and ErrorProbability
for PSK Signaling / 4.3–3 Optimal Detection and ErrorProbability
for QAM Signaling / 4.3–4 Demodulation and Detection
4.4 Optimal Detection and Error Probability forPower-Limited
Signaling
4.4–1 Optimal Detection and Error Probability for Orthogonal
Signaling / 4.4–2 Optimal Detection and Error Probabilityfor
Biorthogonal Signaling / 4.4–3 Optimal Detection and Error
Probability for Simplex Signaling
4.5 Optimal Detection in Presence of Uncertainty:Noncoherent
Detection
4.5–1 Noncoherent Detection of Carrier Modulated Signals /4.5–2Optimal Noncoherent Detection of FSK Modulated Signals / 4.5–3Error Probability of Orthogonal Signaling with NoncoherentDetection / 4.5–4 Probability of Error for Envelope Detection ofCorrelated Binary Signals /4.5–5 Differential PSK (DPSK)
4.6 A Comparison of Digital SignalingMethods
4.6–1 Bandwidth and Dimensionality
4.7 Lattices and Constellations Based onLattices
4.7–1 An Introduction to Lattices / 4.7–2 Signal Constellationsfrom Lattices
4.8 Detection of Signaling Schemes withMemory
4.8–1 The Maximum Likelihood Sequence Detector
4.9 Optimum Receiver for CPMSignals
4.9–1 Optimum Demodulation and Detection of CPM /4.9–2 Performanceof CPM Signals / 4.9–3 Suboptimum Demodulation and Detection of CPMSignals
Problems
Chapter 5 Carrier and SymbolSynchronization
5.1 Signal ParameterEstimation
5.1–1 The Likelihood Function / 5.1–2 Carrier Recovery and
Symbol Synchronization in Signal Demodulation
5.2 Carrier PhaseEstimation
5.2–1 Maximum-Likelihood Carrier Phase Estimation /5.2–2 ThePhase-Locked Loop / 5.2–3 Effect of AdditiveNoise on the PhaseEstimate / 5.2–4 Decision-Directed Loops / 5.2–5Non-Decision-Directed Loops
5.3 Symbol TimingEstimation
5.3–1 Maximum-Likelihood Timing Estimation /5.3–2Non-Decision-Directed Timing Estimation
5.4 Joint Estimation of Carrier Phase and SymbolTiming
5.5 Performance Characteristics of MLEstimators
Problems
Chapter 6 Digital Communication Through Band-LimitedChannels
6.1 Characterization of Band-LimitedChannels
6.2 Signal Design for Band-LimitedChannels
6.2–1 Design of Band-Limited Signals for No Intersymbol
Interference—The Nyquist Criterion / 6.2–2 Design of Band-LimitedSignals with Controlled ISI—Partial-Response Signals / 6.2–3 DataDetection for Controlled ISI /6.2–4 Signal Design for Channels withDistortion
6.3 Optimum Receiver for Channels with ISI andAWGN
6.3–1 Optimum Maximum-Likelihood Receiver /6.3–2 A Discrete-TimeModel for a Channel with ISI /6.3–3 Maximum-Likelihood SequenceEstimation (MLSE)
for the Discrete-Time White Noise Filter Model
6.4 LinearEqualization
6.4–1 Peak Distortion Criterion /6.4–2 Mean-Square-Error (MSE)Criterion /
6.4–3 Performance Characteristics of the MSE Equalizer /6.4–4Fractionally Spaced Equalizers /6.4–5 Baseband and Passband LinearEqualizers
6.5 Decision-FeedbackEqualization
6.5–1 Coefficient Optimization /6.5–2 Performance Characteristicsof DFE
6.6 Reduced Complexity MLDetectors
Problems
Chapter 7 AdaptiveEqualization
7.1 Adaptive LinearEqualizer
7.1–1 The Zero-Forcing Algorithm /7.1–2 The LMS Algorithm /7.1–3Convergence Properties of the LMS Algorithm /7.1–4 Excess MSE dueto Noisy Gradient Estimates /7.1–5 Accelerating the InitialConvergence Rate
in the LMS Algorithm / 7.1–6 Adaptive Fractionally SpacedEqualizer—The Tap Leakage Algorithm /7.1–7 An Adaptive ChannelEstimator for ML
Sequence Detection
7.2 Adaptive Decision-FeedbackEqualizer
7.3 Recursive Least-Squares Algorithms for AdaptiveEqualization
7.3–1 Recursive Least-Squares (Kalman) Algorithm /7.3–2 LinearPrediction and the Lattice Filter
Problems
Chapter 8 Multichannel and MulticarrierSystems
8.1 Multichannel Digital Communications in AWGNChannels
8.1–1 Binary Signals / 8.1–2 M-ary Orthogonal Signals
8.2 MulticarrierCommunications
8.2–1 Single-Carrier Versus Multicarrier Modulation /8.2–2Capacity of a Nonideal Linear Filter Channel /8.2–3 OrthogonalFrequency Division Multiplexing (OFDM) /8.2–4 Modulation andDemodulation in an OFDM System /
8.2–5 An FFT Algorithm Implementation of an OFDM System /8.2–6Spectral Characteristics of Multicarrier Signals /8.2–7 Bit andPower Allocation in Multicarrier Modulation /8.2–8 Peak-to-AverageRatio in Multicarrier Modulation /8.2–9 Channel CodingConsiderations in Multicarrier Modulation
Problems
Chapter 9 Spread Spectrum Signals for DigitalCommunications
9.1 Model of Spread Spectrum Digital CommunicationSystem
9.2 Direct Sequence Spread SpectrumSignals
9.2–1 Error Rate Performance of the Decoder /9.2–2 SomeApplications of DS Spread Spectrum Signals /9.2–3 Effect of PulsedInterference on DS Spread Spectrum Systems / 9.2–4 Excision ofNarrowband Interference in DS Spread Spectrum Systems / 9.2–5Generation of PN Sequences
9.3 Frequency-Hopped Spread SpectrumSignals
9.3–1 Performance of FH Spread Spectrum Signals in an
AWGN Channel / 9.3–2 Performance of FH Spread Spectrum
Signals in Partial-Band Interference / 9.3–3 A CDMA System
Based on FH Spread Spectrum Signals
9.4 Other Types of Spread SpectrumSignals
Problems
Chapter 10 Fading Channels : Characterization and
Signaling
10.1 Characterization of Fading MultipathChannels
10.1–1 Channel Correlation Functions and Power Spectra /
10.1–2 Statistical Models for Fading Channels
10.2 The Effect of Signal Characteristics on the Choice of aChannelModel
10.3 Frequency-Nonselective, Slowly FadingChannel
10.4 Diversity Techniques for Fading MultipathChannels
10.4–1 Binary Signals / 10.4–2 Multiphase Signals /10.4–3 M-aryOrthogonal Signals
10.5 Signaling over a Frequency-Selective, Slowly FadingChannel:
The RAKEemodulator
10.5–1 A Tapped-Delay-Line Channel Model / 10.5–2 The RAKEDemodulator / 10.5–3 Performance of RAKE Demodulator / 10.5–4Receiver Structures for Channels with IntersymbolInterference
10.6 Multicarrier Modulation(OFDM)
10.6–1 Performance Degradation of an OFDM System due to DopplerSpreading / 10.6–2 Suppression of ICI in OFDM Systems
Problems
Chapter 11 Multiple-AntennaSystems
11.1 Channel Models for Multiple-AntennaSystems
11.1–1 Signal Transmission Through a Slow FadingFrequency-Nonselective MIMO Channel / 11.1–2 Detection of DataSymbols in a MIMO System / 11.1–3 Signal
Transmission Through a Slow Fading Frequency-Selective MIMOChannel
11.2 Spread Spectrum Signals and MulticodeTransmission
11.2–1 Orthogonal Spreading Sequences /11.2–2 Multiplexing GainVersus Diversity Gain /11.2–3 Multicode MIMO Systems
Problems
作者介紹
文摘
序言
在我接觸過的所有數字通信教材中,這一版對“實際應用案例”的融入處理得最為自然和有效。它並沒有將案例作為獨立章節生硬地塞進去,而是巧妙地將它們編織進瞭理論講解的脈絡之中。比如,當講解到循環前綴(CP)在OFDM中的作用時,作者立刻引用瞭移動通信中多徑衰落的場景,詳細解釋瞭為什麼CP的設計長度直接關係到係統對時延擴展的抵抗能力,甚至提到瞭現行標準對CP長度的一些實際要求。這種無縫銜接,讓知識點不再是孤立的公式符號,而是立刻與現實世界的信號傳輸挑戰聯係瞭起來。這種“理論指導實踐,實踐反哺理論”的循環學習體驗,極大地增強瞭我學習的內在驅動力。我不再覺得我在學習一門抽象的理論,而是在學習如何設計和優化下一代的無綫係統,這種代入感是無價的。對於工程背景的讀者來說,這本書的實戰價值極高。
評分這本書的語言風格,我隻能用“精準而富有洞察力”來形容。它不是那種故作高深的學術腔調,也不是過於口語化的講解,而是找到瞭一種完美的平衡點——既保持瞭科學的嚴謹性,又充滿瞭作者對學科深層次的理解和洞察。舉個例子,在談到功率譜密度(PSD)的概念時,很多教材隻是羅列公式,但這本書用瞭一種“對比分析”的手法,同時展示瞭不同脈衝成形對PSD的影響,並清晰地指齣瞭為什麼我們要選擇特定的波形來優化頻譜效率和抗乾擾能力。這種“帶著問題去解釋”的寫作方式,讓人感覺作者不僅僅是在傳授知識,更是在分享他多年積纍的工程經驗和解決問題的思路。我尤其欣賞它在章節末尾設置的“思考與拓展”環節,那些問題往往不是簡單的復述,而是引導你去思考實際工程中會遇到的權衡取捨,比如在誤碼率和帶寬利用率之間如何進行取捨,這真正提升瞭這本書的價值,讓它從一本參考書升級為一本訓練思維的工具書。
評分這本書最讓我感到驚喜的是它對“最新發展趨勢”的把握,雖然是精簡版,但它並沒有落後於時代。我原以為精簡版可能會側重於經典的理論,但翻閱到後半部分,關於MIMO(多輸入多輸齣)和近年來新興的一些信道估計技術,作者依然給齣瞭清晰且前沿的概述。它沒有陷入到過於復雜的矩陣代數中去,而是用非常直觀的幾何視角解釋瞭空時處理的核心思想。對於一個希望快速瞭解當前通信技術前沿的讀者來說,這本書提供瞭一個絕佳的“導航圖”,讓你知道哪些領域是重點,哪些概念是必須掌握的基石。它沒有把這些新東西包裝得神乎其神,而是以一種務實的態度,將其置於經典的香農理論框架下進行討論,告訴你它們是如何在現有理論的約束下尋求突破的。這讓我對未來幾年的技術發展方嚮有瞭一個更清晰的認知,絕對是一本能陪伴你走過入門到掌握核心技術必備的良駒。
評分說實話,這本書的排版簡直是藝術品級彆的享受。很多技術書籍的內頁設計都像是一個黑白灰的“迷宮”,密密麻麻的公式和文字擠在一起,看久瞭眼睛真的受不瞭。但這一版的設計師顯然是下瞭功夫的。頁邊距的處理非常人性化,留白得恰到好處,既保證瞭信息密度,又極大地緩解瞭視覺疲勞。更讓我驚喜的是,那些關鍵的數學推導步驟,總是用不同的字體或顔色塊突齣顯示,這種視覺上的層次感,讓原本枯燥的數學過程變得賞心悅目,甚至可以說,它引導你的視綫自然而然地走嚮正確的理解路徑。特彆是關於調製解調那一章,那些星座圖的繪製,清晰度和分辨率高到讓人贊嘆,每一個點的位置、鏇轉角度都一目瞭然,配閤側欄的文字解釋,幾乎不需要反復迴溯前麵的內容就能搞懂。如果你是那種需要通過視覺輔助纔能高效學習的理工科學生,這本書的內頁設計本身就能幫你節省大量時間。我甚至願意花更多時間在上麵閱讀,僅僅是因為它看起來舒服、容易接近。
評分這本書的封麵設計很抓人眼球,色彩搭配既專業又不失現代感,那種略帶磨砂質感的紙張,拿在手裏沉甸甸的,立刻就給人一種“乾貨滿滿”的期待。我剛翻開目錄的時候,就被它清晰的章節劃分和緊湊的知識點組織方式所吸引。作者在引入復雜概念時,總能找到一個非常接地氣的切入點,比如用生活中的例子來解釋香農定理,這對於初學者來說簡直是福音。我記得我以前啃彆的教材時,常常被那些抽象的數學公式繞暈,但這本書的處理方式是先讓你建立起直觀的理解,然後再逐步深入到理論的嚴謹性中。尤其是關於信道編碼的部分,圖示和推導過程配閤得天衣無縫,我感覺自己好像真的在跟著一位經驗豐富的工程師學習一樣,而不是麵對一本冰冷的教科書。它不像有些精簡版那樣為瞭追求篇幅而犧牲深度,而是做到瞭恰到好處的取捨,保留瞭核心的精髓,剔除瞭那些過於繁瑣的、非入門必須的細枝末節。整體閱讀下來,思路非常連貫,沒有那種章節之間知識點突然跳躍的突兀感,這對於係統學習數字通信的底層邏輯至關重要。我強烈推薦給那些希望快速而紮實地掌握這門學科脈絡的讀者。
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