Semi Blind Carrier Frequency Offset Estimation And Channel Equalization

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Semi-Blind Carrier Frequency Offset Estimation and Channel Equalization

Author : Yufei Jiang
Publisher : Springer
ISBN 13 : 3319249843
Total Pages : 96 pages
Book Rating : 4.3/5 (192 download)

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Book Synopsis Semi-Blind Carrier Frequency Offset Estimation and Channel Equalization by : Yufei Jiang

Download or read book Semi-Blind Carrier Frequency Offset Estimation and Channel Equalization written by Yufei Jiang and published by Springer. This book was released on 2015-12-01 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: This SpringerBrief investigates the performance of semi-blind independent component analysis (ICA) based equalization and carrier frequency offset estimation approaches (CFO) for a number of orthogonal frequency division multiplexing (OFDM) based wireless communication systems. It provides a comprehensive overview of the challenges of channel equalization and frequency synchronization for different wireless systems. The authors present the wireless communication channel and system models. Key existing CFO estimation methods are reviewed, along with a number of the training based and non-training based (blind) channel estimation methods. This is followed by a study of ICA and its applications to OFDM-based wireless communication systems. Later chapters provide a detailed description of recent research on semi-blind CFO estimation and ICA based equalization approaches for various wireless communication systems including multiple-input multiple-output (MIMO) OFDM and coordinated multipoint (CoMP) systems. Semi-blind CFO estimation and equalization structures provide a spectrum-efficient and high-performance solution for high speed wireless communications. This book is suitable for postgraduate students, researchers or professionals in the area of wireless communications.

Carrier Frequency Offset Estimation for Multicarrier Communications

Author : Cheng Li
Publisher :
ISBN 13 : 9781374709478
Total Pages : pages
Book Rating : 4.7/5 (94 download)

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Book Synopsis Carrier Frequency Offset Estimation for Multicarrier Communications by : Cheng Li

Download or read book Carrier Frequency Offset Estimation for Multicarrier Communications written by Cheng Li and published by . This book was released on 2017-01-27 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Carrier Frequency Offset Estimation for Multicarrier Communications" by Cheng, Li, 李鋮, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Abstract of thesis entitled Carrier Frequency Offset Estimation for Multicarrier Communications Submitted by Li Cheng For the degree of Master of Philosophy at the University of Hong Kong in Feb., 2004 Multicarrier (MC) transmission is a promising technology in broadband wireless access involving high-throughput data transmission. MC communications are advantageous over single-carrier transmission in dealing with inter-symbol interference (ISI) due to the channel delay spread. However, MC communications also have certain drawbacks, including the vulnerability to carrier frequency offset (CFO) arising from the difference of oscillator frequencies between the transmitter and the receiver or from the Doppler shift. The performance of MC systems degrades severely even if the CFO is a small fraction of the subcarrier spacing. Therefore, correction of CFO is very important for MC communications. This thesis considers two variants of MC technologies, OFDM and MC-CDMA, and investigates CFO estimation for both systems. For OFDM systems, a semi-blind CFO estimation algorithm utilizing the embedded pilot tones, which are primarily used for channel estimation, is proposed for slowly-varying multipath channels. The algorithm is bandwidth efficient because it requires no training symbols. It is also demonstrated that the proposed algorithm can be regarded as the general form of the virtual-carrier-based CFO estimation algorithm previously proposed in the literature. For the purpose of practical implementation, a reduced-complexity estimator is also developed. It offers a tradeoff between estimation accuracy and implementation complexity. It is shown by simulation results that the proposed algorithm outperforms the cyclic-prefix-based algorithm in terms of the estimated CFO mean-square error performance. For MC- CDMA systems, a blind CFO estimator is proposed for the downlink transmission, where all users' signals are synchronously transmitted. The estimation scheme consists of two stages: feed-forward acquisition and error-feedback data-directed tracking. The acquisition stage is implemented utilizing the orthogonality among spreading codes and it is capable of bringing the CFO as large as the signal bandwidth to a small value. The residual CFO is refined by the tracking stage, which estimates the CFO and users' data simultaneously based on the maximum likelihood criterion. A reduced-complexity estimator based on the zero-padding FFT technique is also developed to reduce the implementation complexity. The performance of the proposed algorithm is investigated by extensive computer simulations. DOI: 10.5353/th_b2972533 Subjects: Signal processing - Digital techniques - Mathematics Multiplexing Wireless communication systems

Advanced Control Engineering Methods in Electrical Engineering Systems

Author : Mohammed Chadli
Publisher : Springer
ISBN 13 : 3319978160
Total Pages : 576 pages
Book Rating : 4.3/5 (199 download)

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Book Synopsis Advanced Control Engineering Methods in Electrical Engineering Systems by : Mohammed Chadli

Download or read book Advanced Control Engineering Methods in Electrical Engineering Systems written by Mohammed Chadli and published by Springer. This book was released on 2018-09-10 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the proceedings of the Third International Conference on Electrical Engineering and Control (ICEECA2017). It covers new control system models and troubleshooting tips, and also addresses complex system requirements, such as increased speed, precision and remote capabilities, bridging the gap between the complex, math-heavy controls theory taught in formal courses, and the efficient implementation required in real-world industry settings. Further, it considers both the engineering aspects of signal processing and the practical issues in the broad field of information transmission and novel technologies for communication networks and modern antenna design. This book is intended for researchers, engineers, and advanced postgraduate students in control and electrical engineering, computer science, signal processing, as well as mechanical and chemical engineering.

Channel Estimation, Data Detection and Carrier Frequency Offset Estimation in OFDM Systems

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (654 download)

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Book Synopsis Channel Estimation, Data Detection and Carrier Frequency Offset Estimation in OFDM Systems by :

Download or read book Channel Estimation, Data Detection and Carrier Frequency Offset Estimation in OFDM Systems written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Channel Estimation and Carrier Frequency Offset Estimation for Wireless OFDM Systems

Author : Jie Zhu
Publisher :
ISBN 13 :
Total Pages : 246 pages
Book Rating : 4.:/5 (614 download)

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Book Synopsis Channel Estimation and Carrier Frequency Offset Estimation for Wireless OFDM Systems by : Jie Zhu

Download or read book Channel Estimation and Carrier Frequency Offset Estimation for Wireless OFDM Systems written by Jie Zhu and published by . This book was released on 2004 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Carrier Frequency Offset Estimation for Orthogonal Frequency Division Multiplexing Systems

Author : Xiangnian Zeng
Publisher :
ISBN 13 :
Total Pages : 250 pages
Book Rating : 4.:/5 (463 download)

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Book Synopsis Carrier Frequency Offset Estimation for Orthogonal Frequency Division Multiplexing Systems by : Xiangnian Zeng

Download or read book Carrier Frequency Offset Estimation for Orthogonal Frequency Division Multiplexing Systems written by Xiangnian Zeng and published by . This book was released on 2008 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Blind Equalization and Identification

Author : Zhi Ding
Publisher : CRC Press
ISBN 13 : 1482270730
Total Pages : 418 pages
Book Rating : 4.4/5 (822 download)

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Book Synopsis Blind Equalization and Identification by : Zhi Ding

Download or read book Blind Equalization and Identification written by Zhi Ding and published by CRC Press. This book was released on 2018-10-08 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text seeks to clarify various contradictory claims regarding capabilities and limitations of blind equalization. It highlights basic operating conditions and potential for malfunction. The authors also address concepts and principles of blind algorithms for single input multiple output (SIMO) systems and multi-user extensions of SIMO equalization and identification.

Networking -- ICN 2005

Author : Pascal Lorenz
Publisher : Springer Science & Business Media
ISBN 13 : 3540253386
Total Pages : 1184 pages
Book Rating : 4.5/5 (42 download)

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Book Synopsis Networking -- ICN 2005 by : Pascal Lorenz

Download or read book Networking -- ICN 2005 written by Pascal Lorenz and published by Springer Science & Business Media. This book was released on 2005-04 with total page 1184 pages. Available in PDF, EPUB and Kindle. Book excerpt: The two-volume set LNCS 3420/3421 constitutes the refereed proceedings of the 4th International Conference on Networking, ICN 2005, held in Reunion Island, France in April 2005. The 238 revised full papers presented were carefully reviewed and selected from 651 submissions. The papers are organized in topical sections on grid computing, optical networks, wireless networks, QoS, WPAN, sensor networks, traffic control, communication architectures, audio and video communications, differentiated services, switching, streaming, MIMO, MPLS, ad-hoc networks, TCP, routing, signal processing, mobility, performance, peer-to-peer networks, network security, CDMA, network anomaly detection, multicast, 802.11 networks, and emergency, disaster, and resiliency.

Blind Carrier Frequency Offset Estimation for Differentially Coded OFDM Systems

Author : Binwei Weng
Publisher :
ISBN 13 :
Total Pages : 106 pages
Book Rating : 4.:/5 (148 download)

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Book Synopsis Blind Carrier Frequency Offset Estimation for Differentially Coded OFDM Systems by : Binwei Weng

Download or read book Blind Carrier Frequency Offset Estimation for Differentially Coded OFDM Systems written by Binwei Weng and published by . This book was released on 2003 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Adaptive Blind Signal and Image Processing

Author : Andrzej Cichocki
Publisher : John Wiley & Sons
ISBN 13 : 9780471607915
Total Pages : 596 pages
Book Rating : 4.6/5 (79 download)

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Book Synopsis Adaptive Blind Signal and Image Processing by : Andrzej Cichocki

Download or read book Adaptive Blind Signal and Image Processing written by Andrzej Cichocki and published by John Wiley & Sons. This book was released on 2002-06-14 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt: Im Mittelpunkt dieses modernen und spezialisierten Bandes stehen adaptive Strukturen und unüberwachte Lernalgorithmen, besonders im Hinblick auf effektive Computersimulationsprogramme. Anschauliche Illustrationen und viele Beispiele sowie eine interaktive CD-ROM ergänzen den Text.

Blind Carrier Frequency Offset Estimation for Multicarrier Systems

Author : Mahmoud Mohammad Qasaymeh
Publisher :
ISBN 13 :
Total Pages : 63 pages
Book Rating : 4.:/5 (697 download)

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Book Synopsis Blind Carrier Frequency Offset Estimation for Multicarrier Systems by : Mahmoud Mohammad Qasaymeh

Download or read book Blind Carrier Frequency Offset Estimation for Multicarrier Systems written by Mahmoud Mohammad Qasaymeh and published by . This book was released on 2009 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Multicarrier Communication (MCM) system such as an Orthogonal Frequency Division Multiplexing OFDM or Discrete Multi Tone (DMT) system has been shown to be an effective technique to combat multipath fading in wireless communications. OFDM is a modulation scheme that allows digital data to be efficiently and reliably transmitted over a radio channel, even in multipath environments. OFDM transmits data by using a large number of narrow bandwidth carriers. These carriers are regularly spaced in frequency, forming a block of spectrum. The frequency spacing and time synchronization of the carriers is chosen in such a way that the carriers are orthogonal, meaning that they do not cause interference to each other. In spite of the success and effectiveness of the OFDM systems, it suffers from two well known draw backs: large Peak to Average Power Ratio (PAPR) and high sensitivity to Carrier Frequency Offset (CFO). The presence of the CFO in the received carrier will lose orthogonality among the carriers and because the CFO causes a reduction of desired signal amplitude in the output decision variable and introduces Inter Carrier Interference (ICI). It then brings up an increase of Bit Error Rate (BER). This makes the problem of estimating the CFO an attractive and necessary research problem. In this dissertation blind estimation techniques will be proposed to estimate the offset parameter.

Decision-feedback Equalization and Channel Estimation for Single-carrier Frequency Division Multiple Access

Author : Gillian Huang
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (931 download)

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Book Synopsis Decision-feedback Equalization and Channel Estimation for Single-carrier Frequency Division Multiple Access by : Gillian Huang

Download or read book Decision-feedback Equalization and Channel Estimation for Single-carrier Frequency Division Multiple Access written by Gillian Huang and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Intercarrier Interference Reduction and Channel Estimation in OFDM Systems

Author : Yihai Zhang
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (858 download)

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Book Synopsis Intercarrier Interference Reduction and Channel Estimation in OFDM Systems by : Yihai Zhang

Download or read book Intercarrier Interference Reduction and Channel Estimation in OFDM Systems written by Yihai Zhang and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: With the increasing demand for more wireless multimedia applications, it is desired to design a wireless system with higher data rate. Furthermore, the frequency spectrum has becomea limited and valuable resource, making it necessary to utilize the available spectrum efficiently and coexist with other wireless systems. Orthogonal frequency division multiplexing (OFDM)modulation is widely used in communication systems to meet the demand for ever increasing data rates. The major advantage of OFDM over single-carrier transmission is its ability to deal with severe channel conditions without complex equalization. However, OFDM systems suffer from a high peak to average power ratio, and they are sensitive to carrier frequency offset and Doppler spread. This dissertation first focuses on the development of intercarrier interference (ICI) reduction and signal detection algorithms for OFDM systems over time-varying channels. Several ICI reduction algorithms are proposed for OFDM systems over doubly-selective channels. The OFDM ICI reduction problem over time-varying channels is formulated as a combinatorial optimization problem based on the maximum likelihood (ML)criterion. First, two relaxation methods are utilized to convert the ICI reduction problem into convex quadratic programming (QP) problems. Next, a low complexity ICI reduction algorithm applicable to $M$-QAM signal constellations for OFDM systems is proposed. This formulates the ICI reduction problem as a QP problem with non-convex constraints. A successive method is then utilized to deduce a sequence ofreduced-size QP problems. For the proposed algorithms, the QPproblems are solved by limiting the search in the 2-dimensional subspace spanned by its steepest-descent and Newton directions to reduce the computational complexity. Furthermore, a low-bit descent search (LBDS) is employed to improve the system performance. Performance results are given to demonstrate that the proposed ICI reduction algorithms provide excellent performance with reasonable computational complexity. A low complexity joint semiblind detection algorithm based on the channel correlation and noisevariance is proposed which does not require channel state information. The detection problem is relaxed to a continuous non-convex quadratic programming problem. Then an iterative method is utilized to deduce a sequence of reduced-size quadratic programming problems. A LBDS method is also employed to improve the solution of the derived QP problems. Results are given which demonstrate that the proposed algorithm provides similar performance with lower computational complexity compared to that of a sphere decoder. A major challenge to OFDM systems is how to obtain accurate channel state information for coherent detection of the transmitted signals. Thus several channel estimation algorithms are proposed for OFDM systems over time-invariant channels. A channel estimation method is developed to utilize the noncircularity of the input signals to obtain an estimate of the channel coefficients ...

Adaptation in Wireless Communications - 2 Volume Set

Author : Mohamed Ibnkahla
Publisher : CRC Press
ISBN 13 : 1482290332
Total Pages : 1048 pages
Book Rating : 4.4/5 (822 download)

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Book Synopsis Adaptation in Wireless Communications - 2 Volume Set by : Mohamed Ibnkahla

Download or read book Adaptation in Wireless Communications - 2 Volume Set written by Mohamed Ibnkahla and published by CRC Press. This book was released on 2018-10-08 with total page 1048 pages. Available in PDF, EPUB and Kindle. Book excerpt: The widespread use of adaptation techniques has helped to meet the increased demand for new applications. From adaptive signal processing to cross layer design, Adaptation in Wireless Communications covers all aspects of adaptation in wireless communications in a two-volume set. Each volume provides a unified framework for understanding adaptation and relates various specializations through common terminologies. In addition to simplified state-of-the-art cross layer design approaches, they also describe advanced techniques, such as adaptive resource management, 4G communications, and energy and mobility aware MAC protocols.

Adaptive Signal Processing in Wireless Communications

Author : Mohamed Ibnkahla
Publisher : CRC Press
ISBN 13 : 1420046020
Total Pages : 520 pages
Book Rating : 4.4/5 (2 download)

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Book Synopsis Adaptive Signal Processing in Wireless Communications by : Mohamed Ibnkahla

Download or read book Adaptive Signal Processing in Wireless Communications written by Mohamed Ibnkahla and published by CRC Press. This book was released on 2017-12-19 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: Adaptive techniques play a key role in modern wireless communication systems. The concept of adaptation is emphasized in the Adaptation in Wireless Communications Series through a unified framework across all layers of the wireless protocol stack ranging from the physical layer to the application layer, and from cellular systems to next-generation wireless networks. This specific volume, Adaptive Signal Processing in Wireless Communications is devoted to adaptation in the physical layer. It gives an in-depth survey of adaptive signal processing techniques used in current and future generations of wireless communication systems. Featuring the work of leading international experts, it covers adaptive channel modeling, identification and equalization, adaptive modulation and coding, adaptive multiple-input-multiple-output (MIMO) systems, and cooperative diversity. It also addresses other important aspects of adaptation in wireless communications such as hardware implementation, reconfigurable processing, and cognitive radio. A second volume in the series, Adaptation and Cross-layer Design in Wireless Networks(cat no.46039) is devoted to adaptation in the data link, network, and application layers.

Industrial Networks and Intelligent Systems

Author : Yuanfang Chen
Publisher : Springer
ISBN 13 : 3319741764
Total Pages : 382 pages
Book Rating : 4.3/5 (197 download)

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Book Synopsis Industrial Networks and Intelligent Systems by : Yuanfang Chen

Download or read book Industrial Networks and Intelligent Systems written by Yuanfang Chen and published by Springer. This book was released on 2018-01-11 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the thoroughly refereed post-conference proceedings of the Third International Conference on Industrial Networks and Intelligent Systems, INISCOM 2017, held in Ho chi Minh City, Vietnam, in September 2017. The 31 revised full papers carefully reviewed and selected from 45 submissions. The papers cover topics on telecommunications systems and networks, intelligent systems, industrial networks, and applications, computer science, security and privacy, hardware and software design.

Fourier Transform

Author : Salih Salih
Publisher : BoD – Books on Demand
ISBN 13 : 9535104535
Total Pages : 370 pages
Book Rating : 4.5/5 (351 download)

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Book Synopsis Fourier Transform by : Salih Salih

Download or read book Fourier Transform written by Salih Salih and published by BoD – Books on Demand. This book was released on 2012-04-11 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of signal processing has seen explosive growth during the past decades; almost all textbooks on signal processing have a section devoted to the Fourier transform theory. For this reason, this book focuses on the Fourier transform applications in signal processing techniques. The book chapters are related to DFT, FFT, OFDM, estimation techniques and the image processing techqniques. It is hoped that this book will provide the background, references and the incentive to encourage further research and results in this area as well as provide tools for practical applications. It provides an applications-oriented to signal processing written primarily for electrical engineers, communication engineers, signal processing engineers, mathematicians and graduate students will also find it useful as a reference for their research activities.