Издательство John Wiley, 2002, -320 pp.
The motivation for this book is twofold. On the one hand, we provide a didactic tool to students of communications systems. On the other hand, we present a discussion of fundamental algorithms and structures for telecommunication technologies. The contents reflect our experience in teaching courses on Algorithms for Telecommunications at the University of Padova, Italy, as well as our professional experience acquired in industrial research laboratories.
The text explains the procedures for solving problems posed by the design of systems for reliable communications over wired or wireless channels. In particular, we focus on fundamental developments in the field in order to provide the reader with the necessary insight to design essential elements of various communications systems. The book is divided into nineteen chapters. We briefly indicate four tracks corresponding to specific areas and course work offered.
Track
1. Track 1 includes the basic elements for a first course on telecommunications, which we regard as an introduction to the remaining tracks. It covers Chapter 1, which recalls fundamental concepts on signals and random processes, with an emphasis on second order statistical descriptions. A discussion of the characteristics of transmission media follows in Chapter
4. In this track we focus on the description of noise in electronic devices and on the laws of propagation in transmission lines and radio channels. The representation of waveforms by sequences of binary symbols is treated in Chapter 5; for a first course it is suggested that emphasis be placed on PCM. Next, Chapter 6 examines the fundamental principles of a digital transmission system, where a sequence of information symbols is sent over a transmission channel. We refer to Shannon theorem to establish the maximum bit rate that can be transmitted reliably over a noisy channel. Signal dispersion caused by a transmission channel is then analyzed in Chapter
7. Examples of elementary and practical implementations of transmission systems are presented, together with a brief introduction to computer simulations. The first three sections of Chapter 11, where we introduce methods for increasing transmission reliability by exploiting the redundancy added to the information bits, conclude the first track.
Track
2. Track 2, which is an extension of Track 1, focuses on modulation techniques. First, parametric models of random processes are analyzed in Chapter
1. The Wiener filter and the linear prediction theory, which constitute fundamental elements for receiver design, are dealt with in Chapter
2. Chapter 3 lists iterative methods to achieve the objectives stated in Chapter 2, as well as various applications of the Wiener filter, for example channel identification and interference cancellation. These applications are further developed in the first two sections of Chapter 16.
In the first part of Chapter 8, channel equalization is examined as a further application of the Wiener filter. In the second part of the chapter, more sophisticated methods of equalization and symbol detection, which rely on the Viterbi algorithm and on the forward-backward algorithm, are analyzed. Initially single-carrier modulation systems are considered. In Chapter 9, we introduce multicarrier modulation techniques, which are preferable for transmission over very dispersive channels and/or applications that require flexibility in spectral allocation. In Chapter 10 spread spectrum systems are examined, with emphasis to applications for simultaneous channel access by several users that share a wideband channel. The inherent narrowband interference rejection capabilities of spread spectrum systems, as well as their implementations, are also discussed. This is followed by Chapter 18, which illustrates specific modulation techniques developed for mobile radio applications.
Track
3. We observe the trend towards implementing transceiver functions using digital signal processors. Therefore the algorithmic aspects of a transmission system are becoming increasingly important. Hardware devices are assigned wherever possible only the functions of analog front-end, fixed filtering, and digital-to-analog and analog-to-digital conversion. This approach enhances the flexibility of transceivers, which can be utilized for more than one transmission standard, and considerably reduces development time. In line with the above considerations, Track 3 begins with a review of Chapters 2 and 3, which illustrate the fundamental principles of transmission system design, and of Chapter 8, which investigates individual building blocks for channel equalization and symbol detection. The assumption that the transmission channel characteristics are known a priori is removed in Chapter 15, where blind equalization techniques are discussed. Channel coding techniques to improve the reliability of transmission are investigated in depth in Chapters 11 and
12. A further method to mitigate channel dispersion is precoding. The operations of systems that employ joint precoding and channel coding are explained in Chapter
13. Because of electromagnetic coupling, the desired signal at the receiver is often disturbed by other transmissions taking place simultaneously. Cancellation techniques to suppress interference signals are treated in Chapter 16.
Track
4. Track 4 addresses various challenges encountered in designing wired and wireless communications systems. The elements introduced in Chapters 2 and 3, as well as the algorithms introduced in Chapter 8, are essential for this track. The principles of multicarrier and spread spectrum modulation techniques, which are increasingly being adopted in communications systems, are investigated in depth in Chapters 9 and 10, respectively. The design of the receiver front-end, as well as various methods for timing and carrier recovery, are dealt with in Chapter
14. Applications of interference cancellation and multi-user detection are addressed in Chapter
16. An overview of wired and wireless access technologies appears in Chapter 17, and specific examples of system design are given in Chapters 18 and 19.
Elements of signal theory.
The Wiener filter and linear prediction.
Adaptive transversal filters.
Transmission media.
Digital representation of waveforms.
Modulation theory.
Transmission over dispersive channels.
Channel equalization and symbol detection.
Orthogonal frequency division multiplexing.
Spread spectrum systems.
Channel codes.
Trellis coded modulation.
Precoding and coding techniques for dispersive channels.
Synchronization.
Self-training equalization.
Applications of interference cancellation.
Wired and wireless network technologies.
Modulation techniques for wireless systems.
Design of high speed transmission systems over unshielded twisted pair cables.
The motivation for this book is twofold. On the one hand, we provide a didactic tool to students of communications systems. On the other hand, we present a discussion of fundamental algorithms and structures for telecommunication technologies. The contents reflect our experience in teaching courses on Algorithms for Telecommunications at the University of Padova, Italy, as well as our professional experience acquired in industrial research laboratories.
The text explains the procedures for solving problems posed by the design of systems for reliable communications over wired or wireless channels. In particular, we focus on fundamental developments in the field in order to provide the reader with the necessary insight to design essential elements of various communications systems. The book is divided into nineteen chapters. We briefly indicate four tracks corresponding to specific areas and course work offered.
Track
1. Track 1 includes the basic elements for a first course on telecommunications, which we regard as an introduction to the remaining tracks. It covers Chapter 1, which recalls fundamental concepts on signals and random processes, with an emphasis on second order statistical descriptions. A discussion of the characteristics of transmission media follows in Chapter
4. In this track we focus on the description of noise in electronic devices and on the laws of propagation in transmission lines and radio channels. The representation of waveforms by sequences of binary symbols is treated in Chapter 5; for a first course it is suggested that emphasis be placed on PCM. Next, Chapter 6 examines the fundamental principles of a digital transmission system, where a sequence of information symbols is sent over a transmission channel. We refer to Shannon theorem to establish the maximum bit rate that can be transmitted reliably over a noisy channel. Signal dispersion caused by a transmission channel is then analyzed in Chapter
7. Examples of elementary and practical implementations of transmission systems are presented, together with a brief introduction to computer simulations. The first three sections of Chapter 11, where we introduce methods for increasing transmission reliability by exploiting the redundancy added to the information bits, conclude the first track.
Track
2. Track 2, which is an extension of Track 1, focuses on modulation techniques. First, parametric models of random processes are analyzed in Chapter
1. The Wiener filter and the linear prediction theory, which constitute fundamental elements for receiver design, are dealt with in Chapter
2. Chapter 3 lists iterative methods to achieve the objectives stated in Chapter 2, as well as various applications of the Wiener filter, for example channel identification and interference cancellation. These applications are further developed in the first two sections of Chapter 16.
In the first part of Chapter 8, channel equalization is examined as a further application of the Wiener filter. In the second part of the chapter, more sophisticated methods of equalization and symbol detection, which rely on the Viterbi algorithm and on the forward-backward algorithm, are analyzed. Initially single-carrier modulation systems are considered. In Chapter 9, we introduce multicarrier modulation techniques, which are preferable for transmission over very dispersive channels and/or applications that require flexibility in spectral allocation. In Chapter 10 spread spectrum systems are examined, with emphasis to applications for simultaneous channel access by several users that share a wideband channel. The inherent narrowband interference rejection capabilities of spread spectrum systems, as well as their implementations, are also discussed. This is followed by Chapter 18, which illustrates specific modulation techniques developed for mobile radio applications.
Track
3. We observe the trend towards implementing transceiver functions using digital signal processors. Therefore the algorithmic aspects of a transmission system are becoming increasingly important. Hardware devices are assigned wherever possible only the functions of analog front-end, fixed filtering, and digital-to-analog and analog-to-digital conversion. This approach enhances the flexibility of transceivers, which can be utilized for more than one transmission standard, and considerably reduces development time. In line with the above considerations, Track 3 begins with a review of Chapters 2 and 3, which illustrate the fundamental principles of transmission system design, and of Chapter 8, which investigates individual building blocks for channel equalization and symbol detection. The assumption that the transmission channel characteristics are known a priori is removed in Chapter 15, where blind equalization techniques are discussed. Channel coding techniques to improve the reliability of transmission are investigated in depth in Chapters 11 and
12. A further method to mitigate channel dispersion is precoding. The operations of systems that employ joint precoding and channel coding are explained in Chapter
13. Because of electromagnetic coupling, the desired signal at the receiver is often disturbed by other transmissions taking place simultaneously. Cancellation techniques to suppress interference signals are treated in Chapter 16.
Track
4. Track 4 addresses various challenges encountered in designing wired and wireless communications systems. The elements introduced in Chapters 2 and 3, as well as the algorithms introduced in Chapter 8, are essential for this track. The principles of multicarrier and spread spectrum modulation techniques, which are increasingly being adopted in communications systems, are investigated in depth in Chapters 9 and 10, respectively. The design of the receiver front-end, as well as various methods for timing and carrier recovery, are dealt with in Chapter
14. Applications of interference cancellation and multi-user detection are addressed in Chapter
16. An overview of wired and wireless access technologies appears in Chapter 17, and specific examples of system design are given in Chapters 18 and 19.
Elements of signal theory.
The Wiener filter and linear prediction.
Adaptive transversal filters.
Transmission media.
Digital representation of waveforms.
Modulation theory.
Transmission over dispersive channels.
Channel equalization and symbol detection.
Orthogonal frequency division multiplexing.
Spread spectrum systems.
Channel codes.
Trellis coded modulation.
Precoding and coding techniques for dispersive channels.
Synchronization.
Self-training equalization.
Applications of interference cancellation.
Wired and wireless network technologies.
Modulation techniques for wireless systems.
Design of high speed transmission systems over unshielded twisted pair cables.