Friday, April 15, 2011

John.Wiley.Sons.Theory.and.Applications.of.OFDM.and.CDMA.Wideband.Wireless.Communications.Sep.2005.eBook-LinG(4)


Wireless Communications Principles and Practice


Digital Communications 4th editions


Digital Communications 4th editions
1 Introduction
1-1 Elements of a Digital Communication System
1-2 Communication Channels ' and Their Characteristics
1-3 Mathematical Models for Communication Channels
1-4 A Historical Perspective in tbe Development of Digital Communications
1-5 Overview of the Book
1-6 Bibliograpbical Noles and References
2 Probability and Stochastic Processes
2-1 Probability
2-1-1 Random Variables, Probability Distributions.
and Probability Densities
2-1-2 Functions of Random Variables
2-1-3 Statistical Averages of Random Variables
2-1-4 Some Useful Probability Distributions
2-1-5 Upper bounds on the Tail Probability
2-1-6 Sums of Random Variables and the Central limit
2-2 Stocbastic Processes 62
2-2-1 Statistical Averages 64
2-2-2 Power Density Spectrum 67
2-2-3 Response of a linear Time-Invariant System to a Random Input Signal 68
2-2-4 Sampling Theorem for Band-Limited Stochastic Processes 72
2-2-5 Discrete-Tune Stochastic Signals and Systems 74
2-2-6 Cyclostationary Processes 75
2-3 Bibliograpbical Notes and References 77
Problems 77
3 Source Coding 82
3-1 Mathematical Models for Information 82
3-2 A Logarithmic Measure of Information 84
3-2-1 Average Mutual Information and Entropy 87
3-2-2 Information Measures for Continuous Random Variables 91
3-3 Coding for Discrete Sources 93
3-3-1 Coding for Discrete Memoryless Sources 94
3-3-2 Discrete Stationary Sources 103
3-3-3 The Lempel-Ziv Algorithm 106
3-4 Coding for Analog Sources-Optimum Quantization 108
3-4-1 Rate-Distortion Function 108
3-4-2 Scalar Quantization 113
3-4-3 Vector Quantization 118
3-5 Coding Techniques for Analog Sources 125
3-5-1 Temporal Waveform Coding 125
3-5-2 Spectral Waveform Coding 136
3-5-3 Model-Based Source Coding 138
3-6 Bibliographical Notes and Refmmces 144
Problems 144
4 Characterization of Communication Signals
and Systems 152
4-1 Representation of Bandpass Signals and Systems 152
4-1-1 Representation of Bandpass Signals 153
4-1-2 Representation of Unear Bandpass Systems 157
4-1-3 Response of a Bandpass System to a Bandpass Signal 157
4-1-4 Representation of Bandpass Stationary Stochastic Processes 159
4-2 Signal Space Representation 163
4-2-1 Vector Space Concepts 163
4-2-2 Signal Space Concepts 165
4-2-3 Orthogonal Expansions of Signals 165
4-3 Represen tation of Digitally Modulated Signals 173
4-3-1 Memoryless Modulation Methods 174
4-3-2 Linear Modulation With Memory 186
4-3-3 Nonlinear Modulation Metbods with Memory 190
4-4 Spectral Cbaracteristics of Digitally Modulated Signals 203
4-4-1 Power Specua of Linearly Modulated Si&nals 204
4-4-2 Power Spectra of CPFSK and CPM Signals 209
4-4-3 Power Spe,<,ra of Modulated Signals with Memory 220
4-5 Bibliograpbical Notes and Referen~ 223
Problems 224
5 Optimum Receivers for the Additive White Gaussian Noise Channel 233
5-1 Optimum Receiver for Signals (Jorrupted by A WGN 233
5-1-1 Correlation Demodulator 234
5-1-2 Matched-Filter Demodulator 238
5-1-3 The Optimum Detector 244
5-1-4 The Maximum-Likelihood Sequence Detector 249
5-1-5 A Symbol-by-Symbol MAP Detector for Signals with Memory 254
5-2 Performance of the Optimum Receiver for Memoryless Modulation 257
5-2-1 Probability of Error for Binary Modulation 257
5-2-2 Probability of Error for M-ary Orthogonal Signals 260
5-2-3 Probability of Error for M -ary Biorthogonal Signals 264
5-2-4 Probability of Error for Simplex Signals 266
5-2-5 Probability of Error for M-ary Binary-Coded Signals 266

Wednesday, April 13, 2011

Mo phong cac he thong thong tin so

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Contemporary Communication Systems Using Matlab

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Simulation and Software Radio for Mobile Communications.Scanned_MAZ


Preface
Knowledge, the object of knowledge, and the knower are the three factors that motivate the action; the senses, the work, and the doer are the three constituents of action.
- The Bhagvad Gita (I 8. 18)
From September 1996 to August 1997, we worked together at the Delft Univetsity of Technology, The Netherlands, in order to realize future wireless personal multimedia communications (WPMC). During our joint research period, research and development were done on higher layers such as the media access control (MAC) layer and the physical layer, and many researchers came from Europe, Asia, the United States, and The Netherlands to work with us. We also starred new projects and established a joint cooperation with several research institutes, companies, and universities. Once a project is defined, many new researchers are allocated. Among the researchers, some newcomers arc occasionally involved. Moreover, most projects are time-limited. In this situation, the answer to the question of how newcomers prepare to evaluate the target is one of key issues to success in the time-limited project. We considered the answer carefully.