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Adaptive Mimo Ofdm Channel Estimation
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Book Synopsis Adaptive MIMO OFDM Channel Estimation by : Eswar Kumar Madhira
Download or read book Adaptive MIMO OFDM Channel Estimation written by Eswar Kumar Madhira and published by LAP Lambert Academic Publishing. This book was released on 2015-08-13 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book's main focus is present applications of MIMO OFDM and major aspects like channel Estimation.This book also provides information related to basic channel estimation schemes and also how they can be adapted to MIMO OFDM systems.And finally adaptive scheme was described which utilizes the resources much effective way.In this book i gave matlab implementation of the proposed schemes also and simmulation results areprovided.
Book Synopsis The Study of Adaptive Channel Estimation in MIMO-OFDM Based LTE Modem by : Guei-Ying Huang
Download or read book The Study of Adaptive Channel Estimation in MIMO-OFDM Based LTE Modem written by Guei-Ying Huang and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Channel Feedback Techniques for Adaptive Mimo-Ofdm Systems by : Muhammad Rehan Khalid
Download or read book Channel Feedback Techniques for Adaptive Mimo-Ofdm Systems written by Muhammad Rehan Khalid and published by LAP Lambert Academic Publishing. This book was released on 2012-04 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: The new generation of wireless devices support higher data rates. Most of the new standards like HSPA utilize the spatial multiplexing of MIMO channels to achieve higher data rates, and exploit the diversity of MIMO channels to provide better performance. Hence there is an increased interest in the analysis of MIMO communication systems. The eventual objective is to achieve higher data rates in MIMO systems under the constraints of limited bandwidth and power. The radio spectrum is a scarce resource, and very expensive to license. Hence improved and efficient channel utilization techniques are requisite, that exploit the radio spectrum more proficiently. The multipath characteristics of the environment cause the MIMO channels to be frequency selective. For frequency selective deep fading, MIMO system remains ineffective. OFDM, a multicarrier transmission scheme, is well recognized for its potential for attaining high rate transmission over frequency selective channels. It can transform such a frequency selective MIMO channel into a set of parallel frequency-flat channels. Implementing space resources based on OFDM i.e., MIMO-OFDM provides higher data rate.
Book Synopsis Signal Processing, Channel Estimation and Link Adaptation in MIMO-OFDM Systems by : Jianjun Ran
Download or read book Signal Processing, Channel Estimation and Link Adaptation in MIMO-OFDM Systems written by Jianjun Ran and published by Cuvillier Verlag. This book was released on 2008 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Intelligent Multi-Modal Data Processing by : Soham Sarkar
Download or read book Intelligent Multi-Modal Data Processing written by Soham Sarkar and published by John Wiley & Sons. This book was released on 2021-04-06 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive review of the most recent applications of intelligent multi-modal data processing Intelligent Multi-Modal Data Processing contains a review of the most recent applications of data processing. The Editors and contributors – noted experts on the topic – offer a review of the new and challenging areas of multimedia data processing as well as state-of-the-art algorithms to solve the problems in an intelligent manner. The text provides a clear understanding of the real-life implementation of different statistical theories and explains how to implement various statistical theories. Intelligent Multi-Modal Data Processing is an authoritative guide for developing innovative research ideas for interdisciplinary research practices. Designed as a practical resource, the book contains tables to compare statistical analysis results of a novel technique to that of the state-of-the-art techniques and illustrations in the form of algorithms to establish a pre-processing and/or post-processing technique for model building. The book also contains images that show the efficiency of the algorithm on standard data set. This important book: Includes an in-depth analysis of the state-of-the-art applications of signal and data processing Contains contributions from noted experts in the field Offers information on hybrid differential evolution for optimal multilevel image thresholding Presents a fuzzy decision based multi-objective evolutionary method for video summarisation Written for students of technology and management, computer scientists and professionals in information technology, Intelligent Multi-Modal Data Processing brings together in one volume the range of multi-modal data processing.
Book Synopsis Adaptive Filtering Applications by : Lino Garcia Morales
Download or read book Adaptive Filtering Applications written by Lino Garcia Morales and published by IntechOpen. This book was released on 2011-07-05 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: Adaptive filtering is useful in any application where the signals or the modeled system vary over time. The configuration of the system and, in particular, the position where the adaptive processor is placed generate different areas or application fields such as: prediction, system identification and modeling, equalization, cancellation of interference, etc. which are very important in many disciplines such as control systems, communications, signal processing, acoustics, voice, sound and image, etc. The book consists of noise and echo cancellation, medical applications, communications systems and others hardly joined by their heterogeneity. Each application is a case study with rigor that shows weakness/strength of the method used, assesses its suitability and suggests new forms and areas of use. The problems are becoming increasingly complex and applications must be adapted to solve them. The adaptive filters have proven to be useful in these environments of multiple input/output, variant-time behaviors, and long and complex transfer functions effectively, but fundamentally they still have to evolve. This book is a demonstration of this and a small illustration of everything that is to come.
Download or read book OFDM and MC-CDMA written by Lajos Hanzo and published by John Wiley & Sons. This book was released on 2007-01-11 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wireless communications has witnessed a tremendous growth during the past decade and further spectacular enabling technology advances are expected in an effort to render ubiquitous wireless connectivity a reality. Currently, a technical in-depth book on this subject is unavailable, which has a similar detailed exposure of OFDM, MIMO-OFDM and MC-CDMA. A further attraction of the joint treatment of these topics is that it allows the reader to view their design trade-offs in a comparative context. Divided into three main parts: Part I provides a detailed exposure of OFDM designed for employment in various applications Part II is another design alternative applicable in the context of OFDM systems where the channel quality fluctuations observed are averaged out with the aid of frequency-domain spreading codes, which leads to the concept of MC-CDMA Part III discusses how to employ multiple antennas at the base station for the sake of supporting multiple users in the uplink By providing an all-encompassing self-contained treatment this volume will appeal to a wide readership, as it is both an easy-reading textbook and a high-level research monograph.
Book Synopsis Adaptive MIMO-OFDM System for Spectral Efficiency of Wireless System by : Rajvirsinh C. Rana
Download or read book Adaptive MIMO-OFDM System for Spectral Efficiency of Wireless System written by Rajvirsinh C. Rana and published by . This book was released on 2018-09-22 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Optimal Pilot-aided Channel Estimation for MIMO DVB-T OFDM Systems by : Yuefeng Xu
Download or read book Optimal Pilot-aided Channel Estimation for MIMO DVB-T OFDM Systems written by Yuefeng Xu and published by . This book was released on 2008 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: The need for wireless data and multimedia services promotes the development and application of many high-speed wireless communication techniques. Orthogonal Frequency Division Multiplexing (OFDM) techniques and Multiple Input and Multiple Output (MIMO) techniques have gained more and more interest in the last a few years. But there are still many key problems to be solved in OFDM and MIMO, including synchronization, channel estimation, and adaptive modulation. Channel estimation is the research target in this paper. In this thesis, we introduce an optimal Pilot-Aided Channel Estimation (PACE) algorithm. It works in Non Line of Sight (NLOS) environments with low Bit Error Rate (BER) and its computation cost is relatively small.
Book Synopsis On MIMO Signal Processing for Adaptive W-CDMA and OFDM Wireless Transceivers by :
Download or read book On MIMO Signal Processing for Adaptive W-CDMA and OFDM Wireless Transceivers written by and published by . This book was released on 2005 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this paper, we consider wideband extensions of narrowband signal processing techniques for MIMO wireless transceivers. The extensions are applied and analyzed on commonly used wideband systems such as W-CDMA and OFDM. We focus on signal processing techniques for channel estimation and correction, including pilot-aided and decision-directed LMS-based adaptive estimation. Simulation study compares cases with one and two transmit/receive antennas and shows that BER of W-CDMA system consistently improves by exploiting multi-path diversity through additional antenna at the receiver, while additional transmit antenna is beneficial under specific channel conditions. BER performance in OFDM is more sensitive to the value of the channel's smallest eigen-value than to the eigen-spread. In most practical cases, therefore, the sub-channels with small eigen-values are not usable due to poor BER.
Book Synopsis Adaptive MMSE Multiuser Receivers in MIMO OFDM Wireless Communication Systems by : Titus Ikechukwu Eneh
Download or read book Adaptive MMSE Multiuser Receivers in MIMO OFDM Wireless Communication Systems written by Titus Ikechukwu Eneh and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In a bid to cope with challenges of increasing demand for higher data rate, better quality of service, and higher network capacity, there is a migration from Single Input Single Output (SISO) antenna technology to a more promising Multiple Input Multiple Output (MIMO) antenna technology. On the other hand, Orthogonal Frequency Division Multiplexing (OFDM) technique has emerged as a very popular multi-carrier modulation technique, thus it is considered as a promising solution to enhance the data rate of future broadband wireless communication systems. The first contribution of this thesis is the development of a low complexity adaptive algorithm that is robust against slow and fast fading channel scenarios, in comparison to the conventional individual parameter estimation by E. Teletar in his famous paper of 1999. Implementing the Adaptive MMSE Receivers in MIMO OFDM systems which I refer to (AMUD MIMO OFDM), combines the adaptive minimum mean square error multiuser receiver's scheme with prior information of the channel and interference cancelation in the spatial domain, achieves enhanced joint channel estimation and signal detection which makes the new technique effectively mobile. A mathematical analysis and simulation results to estimate the Information Capacity of Mobile Communication system with MMSE DFE and OFDM receivers were investigated. The capacity of a stationary channel with ISI is achievable by both the single carrier MMSE DFE and multicarrier modulation over narrow sub channels with OFDM receivers. The achieved capacity result shows that in both techniques single carrier and multicarrier, apart from different implementations are essentially identical when it comes to achievable criteria for information channel capacity. Lastly, AMUD MIMO OFDM were compared with both adaptive vector pre-coding and iterative system and their performance were fantastic, results shows that it will assure transmission over a high channel capacity.
Book Synopsis Channel Estimation and ICI Cancellation for Adaptive OFDM Systems in Doubly Selective Channels by : Ali Ramadan M. Ali
Download or read book Channel Estimation and ICI Cancellation for Adaptive OFDM Systems in Doubly Selective Channels written by Ali Ramadan M. Ali and published by . This book was released on 2010 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis פירוק ובניה של הדנ"א הקינטופלסטי על ידי פעילות טופואיזומראז מתאי CRITHIDIA FASCICULATA by :
Download or read book פירוק ובניה של הדנ"א הקינטופלסטי על ידי פעילות טופואיזומראז מתאי CRITHIDIA FASCICULATA written by and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis MIMO OFDM Pilot Designs by : Daniel J. Munoz
Download or read book MIMO OFDM Pilot Designs written by Daniel J. Munoz and published by . This book was released on 2012 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: Systems which utilize multiple input-multiple output orthogonal frequency division multiplexing (MIMO OFDM) for current and emerging wireless standards benefit from its advantages in terms of resource adaptation, simplicity in equalization, and rate and reliability improvement. Realizing most of these advantages will require channel state information (CSI). Thus, reliable CSI acquisition is crucial which is typically accomplished by transmitting pilots. MIMO OFDM pilot designs have been studied, but advances in technology have caused new considerations for designing these reference signals. In-phase and quadrature (I/Q) imbalances, practical device imperfections whose impacts are more pronounced as semiconductor technology moves towards smaller scale, can have a significant impact on CSI estimation performance. Some works have addressed pilot designs considering I/Q imbalance but not in an optimal fashion in terms of estimation performance and pilot overhead. We propose new pilot designs for MIMO OFDM systems with frequency dependent and independent I/Q imbalances that meet optimal pilot conditions which we derive to maintain optimal estimation performance while minimizing overhead. Another emerging concept is the use of relay and multi-point to multi-point (MP-MP) systems for transmission of signals. How these are incorporated into the communication system will significantly affect CSI acquisition algorithms, and previous works have limited scopes. We provide pilot designs, channel estimators, and CSI acquisition/sharing algorithms for many various relay and MP-MP transmission strategies which use minimal overhead while maintaining nearly optimal estimation performance. Additionally, we present a new adaptive relay transmission scheme which utilizes an initial CSI estimate of a time varying channel to switch between relays, transmit antennas, subbands, and MIMO transmission modes to enhance reliability of the relay link. For this adaptive scheme we implement temporal power and bit loading for the cascaded source-relay-destination link with/without inter-hop power allocation to further enhance the performance. The simulation results demonstrate an improved performance in the overall bit error rate (BER) and throughput.
Book Synopsis Blind Adaptive Channel Estimation in OFDM Systems by : Xenofon G.. Doukopoulos
Download or read book Blind Adaptive Channel Estimation in OFDM Systems written by Xenofon G.. Doukopoulos and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Adaptive Modulation, Channel Coding and MIMO Schemes for Practical OFDM Systems by : Alfonso Camargo
Download or read book Adaptive Modulation, Channel Coding and MIMO Schemes for Practical OFDM Systems written by Alfonso Camargo and published by . This book was released on 2009 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of International Conference on Communication, Circuits, and Systems by : Sukanta Kumar Sabut
Download or read book Proceedings of International Conference on Communication, Circuits, and Systems written by Sukanta Kumar Sabut and published by Springer Nature. This book was released on 2021-04-02 with total page 575 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book proposes new technologies and discusses innovative solutions to various problems in the field of communication, circuits, and systems, as reflected in high-quality papers presented at International Conference on Communication, Circuits, and Systems (IC3S 2020) held at KIIT, Bhubaneswar, India from 16 – 18 October 2020. It brings together new works from academicians, scientists, industry professionals, scholars, and students together to exchange research outcomes and open up new horizons in the areas of signal processing, communications, and devices.
