Performance Analysis of GLRT-based OFDM SIMO Demodulation System with Pilot-aided Channel Estimation PDF Download
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Author: 廖芝青
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Languages : en
Pages :
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Author: 廖芝青
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Mansour Tahernezhadi
Publisher:
ISBN: 9783838329000
Category :
Languages : en
Pages : 92
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Author: 李啟碩
Publisher:
ISBN:
Category :
Languages : en
Pages : 106
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Author:
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Category :
Languages : en
Pages :
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Book Description
Coherent modulation is more effective than differential modulation for orthogonal frequency division multiplexing (OFDM) systems requiring high data rate and spectral efficiency. Channel estimation is therefore an integral part of the receiver design. In this thesis, two iterative maximum likelihood based channel estimation algorithms are proposed for an OFDM system in dispersive time-varying channels. A multipath channel model is proposed for OFDM uplink transmission in macrocellular systems. The multipath fading channel is modeled such that the channel state can be determined by estimating the unknown channel parameters. A second-order Taylor series expansion is adopted to simplify the channel estimation problem. Based on the system model, an iterative maximum likelihood based algorithm is first proposed to estimate the discrete-time channel parameters. The mean square error performance of the proposed algorithm is analyzed using a small perturbation technique. Based on a convergence rate analysis, an improved iterative maximum likelihood based channel estimation algorithm is presented using a successive overrelaxation method. Numerical experiments are performed to confirm the theoretical analyses and show the improvement in convergence rate of the improved algorithm.
Author: 曾裕鴻
Publisher:
ISBN:
Category :
Languages : en
Pages : 35
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Author: Eugene Golovins
Publisher:
ISBN:
Category :
Languages : en
Pages : 227
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Author: Xiang Yu
Publisher:
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Category : Mobile communications systems
Languages : en
Pages : 204
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Author:
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Category :
Languages : en
Pages :
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Author: Tim Schenk
Publisher: Springer Science & Business Media
ISBN: 1402069030
Category : Technology & Engineering
Languages : en
Pages : 323
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Book Description
This is one of the first books on the emerging research topic of digital compensation of RF imperfections. The book presents a new multidisciplinary vision on the design of wireless communication systems. In this approach the imperfections of the RF front-ends are accepted and digital signal processing algorithms are designed to suppress their impact on system performance. The book focuses on multiple-antenna orthogonal frequency division multiplexing (MIMO OFDM).
Author: David Tse
Publisher: Cambridge University Press
ISBN: 9780521845274
Category : Computers
Languages : en
Pages : 598
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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.
