Multiamplitude Signals Quadrature Amplitude Modulation (QAM) PDF Download

Author: Marlina A. Hamid
Publisher:
ISBN:
Category : Modulation (Electronics)
Languages : en
Pages :

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Author: William Webb
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 584

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Author: Lab-Volt (Quebec) Ltd
Publisher:
ISBN: 9782896401895
Category :
Languages : en
Pages : 99

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Author:
Publisher:
ISBN: 9782897477943
Category :
Languages : en
Pages :

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Author:
Publisher:
ISBN: 9782897478117
Category :
Languages : en
Pages :

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Author: Randy Simpson
Publisher: Emereo Publishing
ISBN: 9781488863905
Category :
Languages : en
Pages : 78

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Book Description
Experience quadrature amplitude modulation in a whole new way. There has never been a quadrature amplitude modulation Guide like this. It contains 78 answers, much more than you can imagine; comprehensive answers and extensive details and references, with insights that have never before been offered in print. Get the information you need--fast! This all-embracing guide offers a thorough view of key knowledge and detailed insight. This Guide introduces what you want to know about quadrature amplitude modulation. A quick look inside of some of the subjects covered: C-QUAM, Radio communications - Data (digital radio), Asymmetric phase-shift keying, Trellis modulation, IEEE 802.11-2007 - 802.11ac, Cable modem termination system Connections, Vector signal analyzer - DSP Display stage, OFDM system comparison table, Kip Thorne - Gravitational waves and LIGO, 64QAM, Modulator - List of common digital modulation techniques, Digital cable - Technical information, Satellite modem - Features, G.992.1 - Reducing Bit Errors with QAM PSK, Modulation order, Broadcast television systems - ATSC, Digital modulation - Analog modulation methods, Outline of television broadcasting - Modulation and frequency conversion, QAM (disambiguation), Cable television headend - Modulation, Global navigation satellite systems - CDMA signals, Grand Alliance (HDTV), Orthogonal frequency-division multiplexing, ISDB - Transmission, Error correction - Satellite broadcasting (DVB), Telecommunications - Modulation, COFDM, Pulse amplitude modulation - Types, 8-VSB - Throughput, Independent sideband, Digital terrestrial - Thailand, AM broadcast band - AM stereo, Carrierless Amplitude Phase Modulation, Amplitude and phase-shift keying, Discrete multi-tone modulation, Modulation - Fundamental digital modulation methods, 8VSB, Chrominance - Television standards, Web-to-TV - Video on demand, and much more...

Author:
Publisher:
ISBN: 9782897477950
Category :
Languages : en
Pages :

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Author: Martin Webb
Publisher:
ISBN: 9780471964216
Category :
Languages : en
Pages : 574

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Author: Lajos L. Hanzo
Publisher:
ISBN:
Category : Mathematics
Languages : en
Pages : 776

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Book Description
Single- and Multi-carrier Quadrature Amplitude Modulation Principles and Applications for Personal Communications, WLANs and Broadcasting L. Hanzo Department of Electronics and Computer Science, University of Southampton, UK W. Webb Motorola, Arlington Heights, USA formerly at Multiple Access Communications Ltd, Southampton, UK T. Keller Ubinetics, Cambridge Technology Centre, Melbourn, UK formerly at Department of Electronics and Computer Science, University of Southampton, UK Motivated by the rapid evolution of wireless communication systems, this expanded second edition provides an overview of most major single- and multi-carrier Quadrature Amplitude Modulation (QAM) techniques commencing with simple QAM schemes for the uninitiated through to complex, rapidly-evolving areas, such as arrangements for wide-band mobile channels. Targeted at the more advanced reader, the multi-carrier modulation based second half of the book presents a research-orientated outlook using a variety of novel QAM-based arrangements. * Features six new chapters dealing with the complexities of multi-carrier modulation which has found applications ranging from Wireless Local Area Networks (WLAN) to Digital Video Broadcasting (DVB) * Provides a rudimentary introduction for readers requiring a background in the field of modulation and radio wave propagation * Discusses classic QAM transmission issues relevant to Gaussian channels * Examines QAM-based transmissions over mobile radio channels * Incorporates QAM-related orthogonal techniques, considers the spectral efficiency of QAM in cellular frequency re-use structures and presents a QAM-based speech communications system design study * Introduces Orthogonal Frequency Division Multiplexing (OFDM) over both Gaussian and wideband fading channels By providing an all-encompassing self-contained treatment of single- and multi- carrier QAM based communications, a wide range of readers including senior undergraduate and postgraduate students, practising engineers and researchers alike will all find the coverage of this book attractive.

Author: Michael T. Donovan
Publisher:
ISBN: 9781423578147
Category :
Languages : en
Pages : 96

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Book Description
Modern digital communication systems are being called upon to move ever increasing amounts of information over decreasingly available bandwidth. This requires that communication systems employ bandwidth-efficient modulation schemes to conserve bandwidth while moving the information at higher data rates. A major stumbling block to using higher order modulation schemes in long haul communication is the distortion caused by high power amplifiers. These high power amplifiers are required to amplify the signal power to a level that will allow distant receivers to correctly demodulate and decode the information. The distortion caused by the high power amplifiers can render a modulation scheme unusable due to the high symbol error rates which result from the extensive skewing of the modulation scheme's signal constellation. This thesis details a predistortion technique using Volterra series approximation techniques to model the inverse of the high power amplifier's distortion characteristics. A 64 Quadrature Amplitude Modulation (64-QAM) system incorporating a predistorter is used to demonstrate the ability to achieve acceptable bit error rates. The implementation of the inverse model and the communication system is performed in MATLAB. The results show the viability of predistortion of digital data to allow the higher order modulation schemes to be incorporated into communication schemes, increasing the overall data rate while conserving bandwidth.