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5 results for "OFDM"
An Overview Peak to Average Power Ratio In Orthogonal Frequency Division Multiplexing System Using Some New Peak to Average Power Ratio Techniques With Matlab Code By zainab saad hadi alhashemi
Paperback: $75.00
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In order to reduce the PAPR, several techniques have been proposed in this thesis, primarily the repeated frequency domain filtering and clipping (RFC) has been proposed and compared with the... More > existing method repeated clipping and frequency domain filtering (RCF). The RFC is better than RCF in performance especially when oversampling (I) ≥ 2, although they have the same complexity and cost. In addition to (RFC) six new types of companding have been proposed and compared with the μ-law and A-law compandings. All these proposed methods have better performance than the μ-law and A-law compandings, and the best one is Absolute Exponential (AEXP) companding. Also four new types of hybrids PAPR reduction techniques have been proposed. These methods are: RCF with precodings, RCF with compandings, RFC with compandings, and precodings with compandings. The best improvement is at (RFC with AEXP) because the PAPR, CCDF of PAPR, and BER. and the SNR has not changed. All methods are simulated using matlab.< Less
Signal Processing Techniques for Software Radios, 2nd edition By Behrouz Farhang-Boroujeny
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This book puts together a collection of signal processing algorithms, filter design methods, and signal processing techniques (tricks) to provide the practicing engineers with the tools necessary for... More > efficient implementation of software defined radios. To demonstrate the implementation of various algorithms on a software radio platform and also to demonstrate their performance, MATLAB scripts (programs) are presented throughout the book. Features include: Digital filter and pulse shape designs; A comprehensive review of multirate signal processing techniques; A review of adaptive filters and techniques; A comprehensive review of phase-locked loops and their application to carrier and timing recovery; A practical introduction to channel equalization techniques; MATLAB codes; A wide range of the end of the chapter problems; A comprehensive project; A comprehensive treatment of OFDM, including tips for implementations; A novel introduction for filter bank multicarrier communications.< Less
Signal Processing Techniques for Software Radios, 2nd edition By Behrouz Farhang-Boroujeny
eBook (PDF): $30.00
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This book puts together a collection of signal processing algorithms, filter design methods, and signal processing techniques (tricks) to provide the practicing engineers with the tools necessary for... More > efficient implementation of software defined radios. To demonstrate the implementation of various algorithms on a software radio platform and also to demonstrate their performance, MATLAB scripts (programs) are presented throughout the book. Features include: Digital filter and pulse shape designs; A comprehensive review of multirate signal processing techniques; A review of adaptive filters and techniques; A comprehensive review of phase-locked loops and their application to carrier and timing recovery; A practical introduction to channel equalization techniques; MATLAB codes; A wide range of the end of the chapter problems; A comprehensive project; A comprehensive treatment of OFDM, including tips for implementations; A novel introduction for filter bank multicarrier communications.< Less
Peak to Average Power Ratio By zainab saad, zainab saad hadi AL hashemi
eBook (PDF): $10.00
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In order to reduce the PAPR, several techniques have been proposed in this thesis, primarily the repeated frequency domain filtering and clipping (RFC) has been proposed and compared with the... More > existing method repeated clipping and frequency domain filtering (RCF). The RFC is better than RCF in performance especially when oversampling (I) ≥ 2 In addition to (RFC) six new types of companding have been proposed and compared with the μ-law and A-law compandings. the best one is Absolute Exponential (AEXP) companding. Five types of pre-coding are used in this work and then compared them with each other. Also four new types of hybrids PAPR reduction techniques have been proposed. These methods are: RCF with precodings, RCF with compandings, RFC with compandings, and precodings with compandings. The best improvement is at (RFC with AEXP) because the PAPR, CCDF of PAPR, and BER. All methods are simulated using matlab.< Less
Banda Ancha Inalámbrica By Jesús Hamilton Ortiz, Bazil Taha Ahmed, Andrés Enríquez
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En la actualidad, buena parte de las pequeñas empresas, poblaciones ubicadas en áreas rurales y los hogares en general, están requiriendo acceso de mayor velocidad a Internet del... More > que podría ofrecer un módem tradicional en una conexión conmutada. Existen distintas alternativas para lograr este cometido, tales como ADSL (Asymmetric Digital Subscriber Line), cable módem, conexión por fibra óptica, radio enlace (micro-ondas, spread spectrum), entre otras. Este documento presenta el estado del arte en el estándar IEEE 802.16, Interface aérea para sistemas de acceso inalámbrico de banda ancha fija que soportan servicios multimedia, así como la revisión del estándar IEEE 802.16e que es una actualización y ampliación del estándar aplicable tanto a entornos fijos como en movimiento. Incluye el estándar IEEE 802.16m en su versión actualizada en IEEE 802.16-2012.< Less