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Author: Maruf Sendogan Publisher: ISBN: 9781423561927 Category : Languages : en Pages : 76
Book Description
The error probability analysis of a Differential Phase Shift Keyed (DPSK) receiver employing diversity combining techniques is performed. It is assumed that the system operates over a frequency non-selective, slowly fading Rician channel. This thesis analyzes Equal Gain Combining (EGC), Selection Combining (SC) and Post Detection Selection Combining (PDSC). The first two diversity combining techniques are widely used in communication systems, while Post Detection Selection Combining is a new technique. Previous analysis of the EGC and the SC techniques shows that the EGC technique has a better performance than the SC technique in a Rayleigh fading channel. In this thesis, the effect on the performance of a noncoherent DPSK receiver using the diversity combining techniques for Rician fading is examined. It is shown that the PDSC technique provides a performance that is better than the SC but worse than the EGC technique. The PDSC technique allows a relatively simple receiver structure independent of the number of diversity branches.
Author: Maruf Sendogan Publisher: ISBN: 9781423561927 Category : Languages : en Pages : 76
Book Description
The error probability analysis of a Differential Phase Shift Keyed (DPSK) receiver employing diversity combining techniques is performed. It is assumed that the system operates over a frequency non-selective, slowly fading Rician channel. This thesis analyzes Equal Gain Combining (EGC), Selection Combining (SC) and Post Detection Selection Combining (PDSC). The first two diversity combining techniques are widely used in communication systems, while Post Detection Selection Combining is a new technique. Previous analysis of the EGC and the SC techniques shows that the EGC technique has a better performance than the SC technique in a Rayleigh fading channel. In this thesis, the effect on the performance of a noncoherent DPSK receiver using the diversity combining techniques for Rician fading is examined. It is shown that the PDSC technique provides a performance that is better than the SC but worse than the EGC technique. The PDSC technique allows a relatively simple receiver structure independent of the number of diversity branches.
Author: Tahir Conka Publisher: ISBN: 9781423560920 Category : Languages : en Pages : 90
Book Description
In this thesis, the performance analysis of a non-coherent Differential Phase Shift Keying (DPSK) receiver using Post-Detection Selection Combining techniques over a Rayleigh fading channel is investigated. Post- Detection Selection Combining (PDSC) is evaluated and compared to Equal Gain Combining (EGC) and Selection Combining (SC), the two common diversity techniques discussed in the literature. Numerical results obtained for Post- Detection Selection Combining are compared to Selection Combining and Equal Gain Combining. The Post-Detection Selection Combining method is shown to be superior to the Selection Combining method but inferior to Equal Gain Combining method for a non-coherent DPSK receiver operating over a Rayleigh fading channel.
Author: Iyad Abdelrazzaqe Al Falujah Publisher: ProQuest ISBN: 9780549145028 Category : Electrical engineering Languages : en Pages :
Book Description
The proliferation of digital wireless communication services has increased the congestion of the available radio spectrum. In addition to that, wireless communications are encountered by multipath channel fading. To alleviate the scarcity of the radio spectrum and multipath channel fading, attention in this dissertation is placed on differentially coherent phase shift keying (DPSK) systems with equal gain combining (EGC) diversity reception. DPSK systems are capable of achieving high spectral efficiency with adequate performance over wireless fading channels. Several wireless communication systems have adopted DPSK such as the time division multiple access (TDMA) version of the North American Digital Cellular (NADC) system. DPSK systems together with multiple-input multiple-output (MIMO) antenna systems have the potential to further improve the diversity gain and increase the spectral efficiency in wireless communication systems. This dissertation analyzes the error rates of a variety of wireless digital techniques over fading channels with particular emphasis on the DPSK systems. This work leads to a useful framework to analyze the error rates of digital techniques over fading channels, and the proposal of a reduced-complexity and low-cost MIMO system for wireless communications. This dissertation also simplifies and generalizes the previous results of the error rates of wireless communication techniques over independent and correlated fading without resorting to approximations. In addition to that, this study investigates the impact of fading correlation and imperfect phase recovery on the performance of noncoherent and coherent digital wireless communication systems respectively. From practical point of view, this research study is expected to be helpful in the design of the practical radio communication receivers. First, this research starts with a study of the DPSK systems over independent and correlated fading channels. We present two approaches to analyze the average bit error probability (BEP) of differential quaternary phase shift keying (DQPSK) systems with equal gain combining (EGC) diversity reception over fading channels. The first approach relies on the integral definition of the associated Legendre functions, which can lead to nite-series closed-form expressions for the average BEP of DQPSK over L independent Rayleigh and Nakagami-m, when the product Lm is integer, fading channels. In the second approach, we propose a finite sum of a finite-range integral for the average BEP of DQPSK with EGC over arbitrarily Nakagami- m and Rician fading channels. Besides, a finite-series closed-form expression is given for the average BEP of differential binary phase shift keying (DBPSK) with EGC over independent Rician fading channels. It is observed that the performance degradation due to the correlation among the diversity branches in Rician fading channels is severer than that in Nakagami- m fading channels as a result of the presence of the specular component. Second, we propose and analyze a reduced-complexity and low-cost DPSK system with MIMO employing EGC (MIMO EGC) diversity reception. The proposed structure provides a reduced-complexity and low-cost receiver for MIMO systems compared to the coherent phase shift keying system (PSK) with MIMO employing maximal ratio combining (MIMO MRC). The average BEP for DBPSK and DQPSK with MIMO EGC over independent Rayleigh fading channels has been derived. The associated Legendre functions approach has been used to analyze the average BEP of DQPSK with MIMO EGC. Finite closed-form expressions for the average BEP of DBPSK and DQPSK are presented. Third, we present another useful utilization of the associated Legendre functions approach. The associated Legendre functions approach is devoted to analyze the performance of coherent PSK systems over fading channels in the presence of imperfect phase recovery. We address an evaluation (without any kind of approximation) for the average BEP of the PSK systems with imperfect phase recovery over fading channels. Moreover, using the Fourier series expansion and the associated Legendre functions, the exact average BEP of the binary and quaternary phase shift keying (BPSK and QPSK respectively) on a single channel (no diversity) in the presence of different kinds of slow fading channels (Rayleigh, Nakagami-m, and Rician), phase recovery error, and additive white Gaussian noise (AWGN) has been evaluated. The detection loss and phase precision for both of BPSK and QPSK have been calculated. The series expressions of the average BEP proposed in our study are found to be converged with reasonable number of terms. Fourth, we turn our attention onto the performance of the square M-ary quadrature amplitude modulation (MQAM) with maximal ratio combining (MRC) receive diversity. We present closed-form expressions for the average SEP of MQAM with arbitrarily fading index m. Two models of MQAM receivers are analyzed. Closed-form expressions are provided for the average SEP in terms of the Appell and Gauss hypergeometric functions. Simplified error expressions are proposed when the product Lm is either integer or half integer. Finally this dissertation is concluded with summarized remarks and future extensions.
Author: Marvin K. Simon Publisher: John Wiley & Sons ISBN: 0471715239 Category : Science Languages : en Pages : 936
Book Description
The four short years since Digital Communication over Fading Channels became an instant classic have seen a virtual explosion of significant new work on the subject, both by the authors and by numerous researchers around the world. Foremost among these is a great deal of progress in the area of transmit diversity and space-time coding and the associated multiple input-multiple output (MIMO) channel. This new edition gathers these and other results, previously scattered throughout numerous publications, into a single convenient and informative volume. Like its predecessor, this Second Edition discusses in detail coherent and noncoherent communication systems as well as a large variety of fading channel models typical of communication links found in the real world. Coverage includes single- and multichannel reception and, in the case of the latter, a large variety of diversity types. The moment generating function (MGF)-based approach for performance analysis, introduced by the authors in the first edition and referred to in literally hundreds of publications, still represents the backbone of the book's presentation. Important features of this new edition include: * An all-new, comprehensive chapter on transmit diversity, space-time coding, and the MIMO channel, focusing on performance evaluation * Coverage of new and improved diversity schemes * Performance analyses of previously known schemes in new and different fading scenarios * A new chapter on the outage probability of cellular mobile radio systems * A new chapter on the capacity of fading channels * And much more Digital Communication over Fading Channels, Second Edition is an indispensable resource for graduate students, researchers investigating these systems, and practicing engineers responsible for evaluating their performance.
Author: Marvin K. Simon Publisher: Wiley-Interscience ISBN: Category : Mathematics Languages : en Pages : 582
Book Description
A unified presentation, broad coverage, single-volume convenience This timesaving reference provides a unified approach to the performance analysis of digital communication systems over generalized fading channels. Employing alternative forms of such classical mathematical functions as the Gaussian Q-function, the Marcum Q-function, and the incomplete Gamma function, the book expresses communication system error probability performance in terms of the moment generation function (MGF) of the fading process. This MGF-based approach provides the unifying backbone of the book. Digital Communication over Fading Channels discusses in detail coherent, differentially coherent, and noncoherent communication systems as well as a large variety of fading channel models typical of communication links found in the real world. Coverage also includes single- and multichannel reception and, in the case of the latter, a large variety of diversity types. For each combination of communication type, channel fading model, and diversity type, the average bit error rate and/or symbol error rate is expressed in an easy-to-evaluate form. Special features include: * Important results previously scattered over many publications-now in a single volume * Simplified results heretofore available only in complex forms * Extremely broad coverage of topics * Explores practical applications, including the problem of optimum combining in the presence of co-channel interference
Author: David Tse Publisher: Cambridge University Press ISBN: 9780521845274 Category : Computers Languages : en Pages : 598
Book Description
This textbook takes a unified view of the fundamentals of wireless communication and explains cutting-edge concepts in a simple and intuitive way. An abundant supply of exercises make it ideal for graduate courses in electrical and computer engineering and it will also be of great interest to practising engineers.
Author: Maruf Sendogan
Author: Maruf Sendogan
Author: Tahir Conka
Author: Iyad Abdelrazzaqe Al Falujah
Author: Marvin K. Simon
Author: Thomas Eng
Author: Marvin K. Simon
Author: 
Author: Il-Jin Youn
Author: David Tse
Author: