Interference Analysis and Reduction for Wireless Systems
Interference Analysis and Reduction for Wireless Systems

Author: Peter Stavroulakis

Publisher: Artech House

Published: 2003

Total Pages: 442

ISBN-13: 9781580535748

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This leading-edge resource offers you a new methodology for analyzing and studying the behavior of wireless communication systems in an interference environment. It provides you with modern tools and techniques for use in real-world applications that help you guarantee optimum system performance. The book treats both additive and multiplicative interfering signals, including in-depth descriptions of how these signals behave, regardless of the source.

Practical Radio Resource Management in Wireless Systems
Practical Radio Resource Management in Wireless Systems

Author: Sofoklis A. Kyriazakos

Publisher: Artech House

Published: 2004

Total Pages: 262

ISBN-13: 9781580536332

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Despite frustrating customers and loss of revenue for telecommunications providers, cellular network congestion has remained a problem for which few solutions have been found. Covering GSM, GPRS, UMTS and beyond 3G systems, this practical book breaks new ground by providing you with proven techniques for decreasing blocking and dropped call rate due to network congestion. Using real measurements, this book clearly shows you that the maximum traffic that can be accommodated in a wireless network is not a constant value and varies significantly.

MIMO Wireless Communications
MIMO Wireless Communications

Author: Ezio Biglieri

Publisher: Cambridge University Press

Published: 2007-01-08

Total Pages: 23

ISBN-13: 1139461265

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Multiple-input multiple-output (MIMO) technology constitutes a breakthrough in the design of wireless communications systems, and is already at the core of several wireless standards. Exploiting multipath scattering, MIMO techniques deliver significant performance enhancements in terms of data transmission rate and interference reduction. This 2007 book is a detailed introduction to the analysis and design of MIMO wireless systems. Beginning with an overview of MIMO technology, the authors then examine the fundamental capacity limits of MIMO systems. Transmitter design, including precoding and space-time coding, is then treated in depth, and the book closes with two chapters devoted to receiver design. Written by a team of leading experts, the book blends theoretical analysis with physical insights, and highlights a range of key design challenges. It can be used as a textbook for advanced courses on wireless communications, and will also appeal to researchers and practitioners working on MIMO wireless systems.

Interference in Large Wireless Networks
Interference in Large Wireless Networks

Author: Martin Haenggi

Publisher: Now Publishers Inc

Published: 2009

Total Pages: 136

ISBN-13: 1601982984

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Since interference is the main performance-limiting factor in most wireless networks, it is crucial to characterize the interference statistics. The main two determinants of the interference are the network geometry (spatial distribution of concurrently transmitting nodes) and the path loss law (signal attenuation with distance). For certain classes of node distributions, most notably Poisson point processes, and attenuation laws, closed-form results are available, for both the interference itself as well as the signal-to-interference ratios, which determine the network performance. This monograph presents an overview of these results and gives an introduction to the analytical techniques used in their derivation. The node distribution models range from lattices to homogeneous and clustered Poisson models to general motion-invariant ones. The analysis of the more general models requires the use of Palm theory, in particular conditional probability generating functionals, which are briefly introduced in the appendix.

Achieving Interoperability in Critical IT and Communication Systems
Achieving Interoperability in Critical IT and Communication Systems

Author: Robert I. Desourdis

Publisher: Artech House

Published: 2009

Total Pages: 441

ISBN-13: 1596933909

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Supported by over 90 illustrations, this unique book provides a detailed examination of the subject, focusing on the use of voice, data, and video systems for public safety and emergency response. This practical resource makes in-depth recommendations spanning technical, planning, and procedural approaches to provide efficient public safety response performance. You find covered the many approaches used to achieve interoperability, including a synopsis of the enabling technologies and systems intended to provide radio interoperability. Featuring specific examples nationwide, the book takes you from strategy to proper implementation, using enterprise architecture, systems engineering, and systems integration planning.

WLANs and WPANs Towards 4G Wireless
WLANs and WPANs Towards 4G Wireless

Author: Ramjee Prasad

Publisher: Artech House

Published: 2003

Total Pages: 272

ISBN-13: 9781580536141

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Explore the present and future trends of WLANs and WPANs with this new, forwarding looking resource. You discover the path that these infrastructures are following from a perspective of synergies with 3G systems, and how they will pave the way for future 4G systems. The book presents a thorough overview of 3G networks and standards, and discusses interworking and handover mechanisms between WLANs and UMTS. You learn what performance can be expected from WLANs and WPANs when they support the TCP/IP stack. Several critical issues are examined in depth, including IP routing and mobility, PHY and MAC layers for the main WLAN specifications, the TCP-UDP/IP protocol stack, and performance of TCP/IP over IEEE 802.11b.

Introduction to OFDM Receiver Design and Simulation
Introduction to OFDM Receiver Design and Simulation

Author: Y.J. Liu

Publisher: Artech House

Published: 2019-11-30

Total Pages: 285

ISBN-13: 1630817392

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This practical book is an accessible introduction to Orthogonal frequency-division multiplexing (OFDM) receiver design, a technology that allows digitized data to be carried by multiple carriers. It offers a detailed simulation study of an OFDM algorithm for Wi-Fi and 4G cellular that can be used to understand other OFDM waveforms. Extensive simulation studies are included using the transmissionwaveform given by the IEEE 802.11 standard. Scrambler, error-correcting codes, interleaver and radio-wave propagation model are included. OFDM waveform characteristics, signal acquisition, synchronization issues, channel estimation and tracking, hard and soft decision decoding are all covered. Detailed derivations leading to the final formula for any algorithm are given, which allows the reader to clearly understand the approximations and conditions behind the formulas and apply them appropriately. The algorithms are selected not just for the best performance from simulation study but also for easy implementation. An example is a unique algorithm for signal acquisition using the principle of maximum likelihood detection.

WiMax RF Systems Engineering
WiMax RF Systems Engineering

Author: Zerihun Abate

Publisher: Artech House

Published: 2009

Total Pages: 341

ISBN-13: 1596939761

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Already deployed in over 42 countries, WiMAX is quickly becoming one of the most important technologies for IP-based high-speed communications. This practical book delivers a solid understanding of WiMAX technology and RF network planning and deployment techniques without undue mathematical rigors. You find numerous examples and real-world case studies that illustrate the evolution of the design process. The book provides hands-on details on essential considerations and important aspects of the technology, from link budget, communication channel characterization, and capacity, to frequency planning, channel impairments and point-to-point link design. You also find in-depth discussions on WiMAX security and how WiMAX complements other technologies.

Full-Duplex Wireless Communications Systems
Full-Duplex Wireless Communications Systems

Author: Tho Le-Ngoc

Publisher: Springer

Published: 2017-07-02

Total Pages: 170

ISBN-13: 3319576909

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This book introduces the development of self-interference (SI)-cancellation techniques for full-duplex wireless communication systems. The authors rely on estimation theory and signal processing to develop SI-cancellation algorithms by generating an estimate of the received SI and subtracting it from the received signal. The authors also cover two new SI-cancellation methods using the new concept of active signal injection (ASI) for full-duplex MIMO-OFDM systems. The ASI approach adds an appropriate cancelling signal to each transmitted signal such that the combined signals from transmit antennas attenuate the SI at the receive antennas. The authors illustrate that the SI-pre-cancelling signal does not affect the data-bearing signal. This book is for researchers and professionals working in wireless communications and engineers willing to understand the challenges of deploying full-duplex and practical solutions to implement a full-duplex system. Advanced-level students in electrical engineering and computer science studying wireless communications will also find this book useful as a secondary textbook.

An Introduction to Optical Wireless Mobile Communication
An Introduction to Optical Wireless Mobile Communication

Author: Harald Haas

Publisher: Artech House

Published: 2021-09-30

Total Pages: 364

ISBN-13: 1630816566

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The use of the optical spectrum for wireless communications has gained significant interest in recent years. Applications range from low-rate simplex transmission links using existing embedded CMOS cameras in smartphones, referred to as optical camera communications (OCC), mobile light fidelity (LiFi) networking in homes, offices, urban and sub-sea environments to free-space gigabit interconnects in data centers and point-to-point long-range wireless backhaul links outdoors and in space. This exciting book focuses on the use of optical wireless communications (OWC) for mobile use cases. The book discusses existing conventional radio frequency (RF)-based wireless access technology and presents the challenges that can impact the requirements of the future wave of new wireless services in the context of artificial intelligence (AI) driven autonomous systems and machine-type communications. The relationship between visible light communications (VLC) and light fidelity (LiFi), is explored, and the major advantages of VLC and LiFi such as security and data density, and discuss existing research challenges are also introduced. Channel modeling techniques are provided for mobile multiuser scenarios, and will introduce key building blocks to achieve LiFi cellular networks achieving orders of magnitude improvements of area spectral efficiency compared to state-of-the-art. Challenges that arise from moving from a static point-to-point visible light link to a LiFi network that is capable of serving hundreds of mobile and fixed nodes are discussed. An overview of recent standardization activities and the commercialization challenges of this disruptive technology is also provided.