Feedforward Symbol Synchronization Techniques for Digital Receiver - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Feedforward Symbol Synchronization Techniques for Digital Receiver write by Yupeng Yan. This book was released on 2003. Feedforward Symbol Synchronization Techniques for Digital Receiver available in PDF, EPUB and Kindle.
Synchronization Techniques for Digital Receivers
Synchronization Techniques for Digital Receivers - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Synchronization Techniques for Digital Receivers write by Umberto Mengali. This book was released on 2013-11-11. Synchronization Techniques for Digital Receivers available in PDF, EPUB and Kindle. Synchronization is a critical function in digital communications; its failures may have catastrophic effects on the transmission system performance. Furthermore, synchronization circuits comprehend such a large part of the receiver hardware that their implementation has a substantial impact on the overall costs. For these reasons design engineers are particularly concerned with the development of new and more efficient synchronization structures. Unfortunately, the advent of digital VLSI technology has radically affected modem design rules, to a point that most analog techniques employed so far have become totally obsolete. Although digital synchronization methods are well established by now in the literature, they only appear in the form of technical papers, often concentrating on specific performance or implementation issues. As a consequence they are hardly useful to give a unified view of an otherwise seemingly heterogeneous field. It is widely recognized that a fundamental understanding of digital synchronization can only be reached by providing the designer with a solid theoretical framework, or else he will not know where to adjust his methods when he attempts to apply them to new situations. The task of the present book is just to develop such a framework.
Feedforward Symbol Timing Recovery
Feedforward Symbol Timing Recovery - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Feedforward Symbol Timing Recovery write by Axel Gesell. This book was released on 2003-01. Feedforward Symbol Timing Recovery available in PDF, EPUB and Kindle.
Symbol Synchronization Techniques in Digital Communications
Symbol Synchronization Techniques in Digital Communications - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Symbol Synchronization Techniques in Digital Communications write by Mohammed Al-Hamiri. This book was released on 2017. Symbol Synchronization Techniques in Digital Communications available in PDF, EPUB and Kindle. "Timing synchronization plays an important role in recovering the original transmitted signal in telecommunication systems. In order to have a communication system that operates at the correct time and in the correct order, it is necessary to synchronize to the transmitter’s symbol timing. Synchronization can be accomplished when the receiver clock tracks the periodic timing information in a transmitted signal to reproduce the original signal. In this thesis work, we report the design, implementation and evaluation of a timing synchronization algorithm based on the technique first proposed by Gardner [1], applied to wireless communication using the Alamouti spacetime code [2] under QPSK modulation with halfsine pulses. To achieve this, a mathematical model is introduced which includes software design of communication algorithms. In this modeling, we simulate the Gardner algorithm in MATLAB. Then, five techniques are introduced to improve the performance of the loop filter in the digital receiver, and they are successfully implemented and evaluated in Matlab. These five techniques prove that there is an improvement in digital receiver performance in terms of the convergence speed and the communication system complexity. On the other hand, the optimum decoding of the Alamouti spacetime code, as initially proposed, makes the nontrivial assumption that the communication system is perfectly synchronized. Realistic wireless environments contain additive white Gaussian noise (AWGN), multipath fading, and it is not perfectly synchronized. In this thesis, the Alamouti spacetime code technique is written for QPSK modulation scheme to work in realistic environment that involves a timing synchronization technique. We compare the bit error rate (BER) of the Alamouti decoder when synchronized using the proposed algorithms with the ideal results found in the literature, and we find them to be similar, proving that the synchronization algorithm is in fact achieving optimum synchronization. This thesis presents synchronization algorithms that are necessary for a complete working wireless Alamouti technique. Also, this thesis improves the communication system performance in terms of the convergence speed with reducing the computational complexity of the communication system design."--Abstract.
Digital Communication Receivers, Synchronization, Channel Estimation, and Signal Processing
Digital Communication Receivers, Synchronization, Channel Estimation, and Signal Processing - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Digital Communication Receivers, Synchronization, Channel Estimation, and Signal Processing write by Heinrich Meyr. This book was released on 1997-11-03. Digital Communication Receivers, Synchronization, Channel Estimation, and Signal Processing available in PDF, EPUB and Kindle. Digital Communication Receivers Synchronization, Channel Estimation, and Signal Processing Digital Communication Receivers offers a complete treatment on the theoretical and practical aspects of synchronization and channel estimation from the standpoint of digital signal processing. The focus on these increasingly important topics, the systematic approach to algorithm development, and the linked algorithm-architecture methodology in digital receiver design are unique features of this book. The material is structured according to different classes of transmission channels. In Part C, baseband transmission over wire or optical fiber is addressed. Part D covers passband transmission over satellite or terrestrial wireless channels. Part E deals with transmission over fading channels. Designed for the practicing communication engineer and the graduate student, the book places considerable emphasis on helpful examples, summaries, illustrations, and bibliographies. Contents include: * Basic material * Baseband communications * Passband transmission * Receiver structure for PAM signals * Synthesis of synchronization algorithms * Performance analysis of synchronizers * Bit error degradation caused by random tracking errors * Frequency estimation * Timing adjustment by interpolation * DSP system implementation * Characterization, modeling, and simulation of linear fading channels * Detection and parameter synchronization on fading channels * Receiver structures for fading channels * Parameter synchronization for flat fading channels * Parameter synchronization for selective fading channels
