Multi Carrier Digital Communications Theory And Applications Of Ofdm Pdf


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multi carrier digital communications theory and applications of ofdm pdf

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It seems that you're in Germany. We have a dedicated site for Germany. Authors: Bahai , Ahmad R. This is clear from the high volume of papers appearing in technical journals and conferences.

Orthogonal frequency-division multiplexing

Bahai, Burton R. OFDM has been chosen as the physical layer standard for a variety of important systems and its implementation techniques continue to evolve rapidly. This book is a valuable summary of the technology, providing an understanding of new advances as well as the present core technology. Highlights of the Second Edition: During the past few years since the publication of the first edition of this text, the technology and application of OFDM have continued their rapid pace of advancement. As a result, it became clear that a new edition of the text would be highly desirable.

Skip to search form Skip to main content You are currently offline. Some features of the site may not work correctly. Bahai and B. Bahai , B. Saltzberg Published Computer Science. From the Publisher: Multi-carrier modulation, in particular orthogonal frequency division multiplexing OFDM , has been successfully applied to a wide variety of digital communications applications for several years.

Multi-Carrier Digital Communications

In telecommunications , orthogonal frequency-division multiplexing OFDM is a type of digital transmission and a method of encoding digital data on multiple carrier frequencies. Chang of Bell Labs in OFDM was improved by Weinstein and Ebert in with the introduction of a guard interval , providing better orthogonality in transmission channels affected by multipath propagation. This maintains total data rates similar to conventional single-carrier modulation schemes in the same bandwidth. The main advantage of OFDM over single-carrier schemes is its ability to cope with severe channel conditions for example, attenuation of high frequencies in a long copper wire, narrowband interference and frequency-selective fading due to multipath without complex equalization filters. Channel equalization is simplified because OFDM may be viewed as using many slowly modulated narrowband signals rather than one rapidly modulated wideband signal. The low symbol rate makes the use of a guard interval between symbols affordable, making it possible to eliminate intersymbol interference ISI and use echoes and time-spreading in analog television visible as ghosting and blurring, respectively to achieve a diversity gain , i.

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Jetzt bewerten Jetzt bewerten. Combining theoretical knowledge and practical applications, this advanced-level textbook covers the most important aspects of contemporary digital communication systems. Introduction to Digital Communication Systems focuses on the rules of functioning digital communication system blocks, starting with the performance limits set by the information theory.

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It seems that you're in Germany. We have a dedicated site for Germany. Authors: Bahai , Ahmad R. Multi-carrier modulation, in particular orthogonal frequency division multiplexing OFDM , has been successfully applied to a wide variety of digital communications applications for several years.

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Multi Carrier Digital Communications Theory And Applications of OFDM Ahmad The QAM line signal is of the form Evolution of OFDMThe use of Frequency.

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