Adaptive Wireless Transceivers

Adaptive Wireless Transceivers PDF Author: Heung-No Lee
Publisher: LAP Lambert Academic Publishing
ISBN: 9783838318899
Category :
Languages : en
Pages : 304

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Book Description
Wireless devices find their ways into our everyday life. Experts say in a near future we will be immersed in environments where we can use small handheld wireless devices to make seamless connections to the Internet via body area networks, homes/offices networks, city networks, and cellular phone networks. Adaptive wireless transceivers enable these networks to handle multimedia traffic and operate robustly in many difficult channel conditions. The wireless channel is unpredictable and diverse. Its response can change very fast when users are in moving platforms. Its signal strength can fade away and responses can exhibit large delay dispersion due to multipath propagation of radio waves. This book provides adaptive wireless transceiver techniques capable of handling these harsh channel conditions and offering high spectrum efficient channels. A computer simulation model accurate but simple enough for fast evaluation is given. System components such as channel estimation, equalization, and sequence detection are discussed in details. Theoretical analyses are provided in each part so that simulation results can be cross-validated.

Adaptive Wireless Transceivers

Adaptive Wireless Transceivers PDF Author: Heung-No Lee
Publisher: LAP Lambert Academic Publishing
ISBN: 9783838318899
Category :
Languages : en
Pages : 304

Get Book Here

Book Description
Wireless devices find their ways into our everyday life. Experts say in a near future we will be immersed in environments where we can use small handheld wireless devices to make seamless connections to the Internet via body area networks, homes/offices networks, city networks, and cellular phone networks. Adaptive wireless transceivers enable these networks to handle multimedia traffic and operate robustly in many difficult channel conditions. The wireless channel is unpredictable and diverse. Its response can change very fast when users are in moving platforms. Its signal strength can fade away and responses can exhibit large delay dispersion due to multipath propagation of radio waves. This book provides adaptive wireless transceiver techniques capable of handling these harsh channel conditions and offering high spectrum efficient channels. A computer simulation model accurate but simple enough for fast evaluation is given. System components such as channel estimation, equalization, and sequence detection are discussed in details. Theoretical analyses are provided in each part so that simulation results can be cross-validated.

Adaptive Wireless Transceivers

Adaptive Wireless Transceivers PDF Author: Lajos Hanzo
Publisher: Wiley-IEEE Press
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 760

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Book Description
Adaptive Wireless Transceivers provides the reader with a broad overview of near-instantaneously adaptive transceivers in the context of TDMA, CDMA and OFDM systems. The adaptive transceivers examined employ powerful turbo codecs, turbo equalisers and space-time codecs, equipping the reader with a future-proof technological road map. It demonstrates that adaptive transceivers are capable of mitigating the channel quality fluctuations of the wireless channel as a lower-complexity alternative to space-time coding. By contrast, if the higher complexity of multiple transmitters and multiple receiver-assisted systems is deemed acceptable, the advantages of adaptability erode. Provides an in-depth introduction to channel equalisers and Kalman filtering and discusses the associated complexity versus performance trade-offs Introduces wideband near-instantaneously adaptive transceivers and studies their performance both with and without turbo channel coding Describes how to optimise adaptive modulation mode switching and highlights a range of practical considerations Introduces neural network based channel equalisers and discusses Radial Basis Function (RBF) assisted equalisers embedded into adaptive modems supported by turbo channel coding and turbo channel equalisation Employs the above adaptive principles also in the context of CDMA and OFDM transceivers and discusses the pros and cons of space-time coding versus adaptive modulation Researchers, advanced students and practising development engineers working in wireless communications will all find this valuable text an informative read.

Multi-Mode / Multi-Band RF Transceivers for Wireless Communications

Multi-Mode / Multi-Band RF Transceivers for Wireless Communications PDF Author: Gernot Hueber
Publisher: John Wiley & Sons
ISBN: 1118102207
Category : Technology & Engineering
Languages : en
Pages : 608

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Book Description
Summarizes cutting-edge physical layer technologies for multi-mode wireless RF transceivers. Includes original contributions from distinguished researchers and professionals. Covers cutting-edge physical layer technologies for multi-mode wireless RF transceivers. Contributors are all leading researchers and professionals in this field.

RF Transceiver Design for MIMO Wireless Communications

RF Transceiver Design for MIMO Wireless Communications PDF Author: Abbas Mohammadi
Publisher: Springer Science & Business Media
ISBN: 3642276350
Category : Technology & Engineering
Languages : en
Pages : 302

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Book Description
This practical resource offers a thorough examination of RF transceiver design for MIMO communications. Offering a practical view on MIMO wireless systems, this book extends fundamental concepts on classic wireless transceiver design techniques to MIMO transceivers. This helps reader gain a very comprehensive understanding of the subject. This in-depth volume describes many theoretical and implementation challenges on MIMO transceivers and provides the practical solutions for these issues. This comprehensive book provides thorough descriptions of MIMO theoretical concepts, MIMO single carrier and OFDM modulation, RF transceiver design concepts, power amplifier, MIMO transmitter design techniques and their RF impairments, MIMO receiver design methods, RF impairments study including nonlinearity, DC-offset, I/Q imbalance and phase noise and their compensation in OFDM and MIMO techniques. In addition, it provides the most practical techniques to realize RF front-ends in MIMO systems. This book is supported with many design equations and illustrations. The first book dedicated to RF Transceiver design for MIMO systems, this volume serves as a current, one-stop guide offering you cost-effective solutions for your challenging projects in the field.

Adaptive Transceivers for Wireless Spectrum Networks

Adaptive Transceivers for Wireless Spectrum Networks PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 18

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Book Description
This project has been concerned with joint transmitter-receiver adaptation in a distributed, peer-to-peer wireless network. Parameters that can be adapted at the transmitter include rate, power, and signatures in space-time-frequency. In this report we summarize our work on the following topics: (1) Limited feedback schemes for optimizing spatial signatures for Multi-Input Multi-Output (MIMO) channels, and power and rates for multi-carrier transmission; (2) Optimization of training overhead for MIMO block fading channels with least squares filter estimation; (3) Optimization of training overhead with limited feedback for wideband multi-carrier channels, and for a narrowband channel with beamforming; (4) Allocation of training and data power U for a time-selective fading channel with known channel state information; (5) Source-channel coding schemes for block fading channels based on erasure and multi-resolution coding; and (6) Distributed power control for peer-to-peer networks based on the exchange of interference prices. Our main results characterize what channel state information should be exchange between the recover and transmitter (or neighboring transmitters in a distributed network) to provide substantial gains in spectral efficiency.

Adaptive Multi-Standard RF Front-Ends

Adaptive Multi-Standard RF Front-Ends PDF Author: Vojkan Vidojkovic
Publisher: Springer Science & Business Media
ISBN: 1402065345
Category : Technology & Engineering
Languages : en
Pages : 204

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Book Description
This book investigates solutions, benefits, limitations, and costs associated with multi-standard operation of RF front-ends and their ability to adapt to variable radio environments. Next, it highlights the optimization of RF front-ends to allow maximum performance within a certain power budget, while targeting full integration. Finally, the book investigates possibilities for low-voltage, low-power circuit topologies in CMOS technology.

Adaptive Wireless Communications

Adaptive Wireless Communications PDF Author: Daniel W. Bliss
Publisher: Cambridge University Press
ISBN: 1107033209
Category : Computers
Languages : en
Pages : 619

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Book Description
History -- Notational and mathematical preliminaries

Third-Generation Systems and Intelligent Wireless Networking

Third-Generation Systems and Intelligent Wireless Networking PDF Author: J. S. Blogh
Publisher: John Wiley & Sons
ISBN: 9780470845196
Category : Computers
Languages : en
Pages : 446

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Book Description
Of Non-Wraparound Network Performance -- Wrap-around Network Performance Results -- Performance Results over a LOS Channel -- Performance Results over a Multipath Channel -- Performance over a Multipath Channel using Power Control -- Performance of an AQAM based Network using Power Control -- UTRA, Adaptive Arrays and Adaptive Modulation -- Direct Sequence Code Division Multiple Access -- UMTS Terrestrial Radio Access -- Spreading and Modulation -- Common Pilot Channel -- Power Control -- Uplink Power Control -- Downlink Power Control -- Soft Handover -- Signal-to-Interference plus Noise Ratio Calculations -- Downlink -- Uplink -- Multi-User Detection -- Simulation Results -- Simulation Parameters -- The Effect of Pilot Power on Soft Handover Results -- Fixed Received Pilot Power Thresholds without Shadowing -- Fixed Received Pilot Power Thresholds with 0.5 Hz Shadowing -- Fixed Received Pilot Power Thresholds with 1.0 Hz Shadowing -- Relative Received Pilot Power Thresholds without Shadowing -- Relative Received Pilot Power Thresholds with 0.5 Hz Shadowing -- Relative Received Pilot Power Thresholds with 1.0 Hz Shadowing -- E[subscript c]/I[subscript o] Power Based Soft Handover Results -- Fixed E[subscript c]/I[subscript o] Thresholds without Shadowing -- Fixed E[subscript c]/I[subscript o] Thresholds with 0.5 Hz Shadowing -- Fixed E[subscript c]/I[subscript o] Thresholds with 1.0 Hz Shadowing -- Relative E[subscript c]/I[subscript o] Thresholds without Shadowing.

Adaptive Signal Processing in Wireless Communications

Adaptive Signal Processing in Wireless Communications PDF Author: Mohamed Ibnkahla
Publisher: CRC Press
ISBN: 1420046020
Category : Technology & Engineering
Languages : en
Pages : 520

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Book Description
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.

Transceiver and System Design for Digital Communications

Transceiver and System Design for Digital Communications PDF Author: Scott R. Bullock
Publisher: IET
ISBN: 1613532032
Category : Technology & Engineering
Languages : en
Pages : 396

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Book Description
This book discusses design of the transceiver, the device that both sends and receives signals, and its place within the wireless communication system. It gives engineers and others a good intuitive understanding of wireless systems and spread spectrum. New topics in this fourth edition include cognitive radio, systems, networks, and commercial communications. In addition, many items have been extensively updated to improve the flow of the book and enhance comprehension. --