Multiuser Detection in CDMA Mobile Terminals

Multiuser Detection in CDMA Mobile Terminals PDF Author: Piero Castoldi
Publisher: Artech House
ISBN: 9781580538015
Category : Technology & Engineering
Languages : en
Pages : 256

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Book Description
Here's an authoritative, cutting-edge resource that gives you a thorough understanding of CDMA transmission and detection. It offers practical guidance in designing interference-reducing multi-user receivers for mobile radio systems and multi-user adaptive modems for accessing satellite earth stations. The book provides in-depth descriptions of CDMA principles, and of linear and non-linear multi-user detection , and covers the fine details of the realization of a linear multi-user receiver.

Search Algorithms and Applications

Search Algorithms and Applications PDF Author: Nashat Mansour
Publisher: BoD – Books on Demand
ISBN: 9533071567
Category : Computers
Languages : en
Pages : 508

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Book Description
Search algorithms aim to find solutions or objects with specified properties and constraints in a large solution search space or among a collection of objects. A solution can be a set of value assignments to variables that will satisfy the constraints or a sub-structure of a given discrete structure. In addition, there are search algorithms, mostly probabilistic, that are designed for the prospective quantum computer. This book demonstrates the wide applicability of search algorithms for the purpose of developing useful and practical solutions to problems that arise in a variety of problem domains. Although it is targeted to a wide group of readers: researchers, graduate students, and practitioners, it does not offer an exhaustive coverage of search algorithms and applications. The chapters are organized into three parts: Population-based and quantum search algorithms, Search algorithms for image and video processing, and Search algorithms for engineering applications.

Multiple Access Communications

Multiple Access Communications PDF Author: Alexey Vinel
Publisher: Springer
ISBN: 364215428X
Category : Computers
Languages : en
Pages : 300

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Book Description
It is our great pleasure to present the proceedings of the Third International Workshop on Multiple Access Communications (MACOM) that was held in Barcelona during September 13–14, 2010. In 1961, Claude Shannon established the foundation for the discipline now known as “multi-user information theory” in his pioneering paper “Two-way Communication Channels,” and later Norman Abramson published his paper “The Aloha System—Another Alternative for Computer Communications” in 1970 which introduced the concept of multiple access using a shared common channel. Thereafter, for more than 40 years of study, numerous elegant theories and algorithms have been developed for multiple-access communications. During the 1980s and 1990s the evolution of multiple-access techniques p- ceeded in conjunction with the evolution of wireless networks. Novel multiple access techniques like code division multiple access (CDMA) and orthogonal frequency division multiple access (OFDMA) provided increased spectral - ?ciency, dynamicity and ?exibility in radio resource allocation with intrinsic anti-multipath and anti-interference features. In this ?rst decade of the 21st century,multiple-accesstechniques,derivedfromadvancedwirelesstransmission methodologiesbasedonthediversityconcept(e. g. ,MC-CDMA,MIMO-OFDMA and SC-FDMA), opened the road to a renewed idea of multiple access. Today multiple-access communications involve many challenging aspects not only l- ited (like in the past) to physical layer design. Medium access control (MAC) techniques play a crucial role in managing the radio resources that users will exploit to transmit their data streams. Recent developments in software radios and cognitive radios have led to a signi?cant impact also on spectrum m- agement and access paradigms.

Traffic Analysis and Design of Wireless IP Networks

Traffic Analysis and Design of Wireless IP Networks PDF Author: Toni Janevski
Publisher: Artech House
ISBN: 9781580536547
Category : Computers
Languages : en
Pages : 394

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Book Description
HereOCOs a unique new book that focuses on the future direction in wireless/mobile telecommunications as a standalone concept for building wireless IP systems, including commercial, campus, local, and global networks. It examines the integration of the Internet and mobile networks, which are merging as a result of global demand for seamless mobile communication."

Advances in Mobile Radio Access Networks

Advances in Mobile Radio Access Networks PDF Author: Y. Jay Guo
Publisher: Artech House
ISBN: 9781580537285
Category : Computers
Languages : en
Pages : 268

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Book Description
As the demand for and the variety of 3G services increase, more advanced hardware and software technologies will be needed to enhance the mobile radio communications infrastructure. This forward-looking book delivers a comprehensive overview of the advanced technologies driving the evolution of mobile radio access networks, focusing on high-level architectural issues and system engineering. The book highlights the advantages and drawbacks of these advanced technologies and helps you make strategic decisions on R&D planning and system deployment.

Multipath Phenomena in Cellular Networks

Multipath Phenomena in Cellular Networks PDF Author: Nathan Blaunstein
Publisher: Artech House
ISBN: 9781580531856
Category : Technology
Languages : en
Pages : 328

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Book Description
Cellular telephone system reception is dramatically affected by various factors in urban environments. This practical text covers the types of problem, like fading, that is encountered when using multipath propagation.

Interference Analysis and Reduction for Wireless Systems

Interference Analysis and Reduction for Wireless Systems PDF Author: Peter Stavroulakis
Publisher: Artech House
ISBN: 9781580535748
Category : Computers
Languages : en
Pages : 442

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Book Description
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.

Wireless Networks: Multiuser Detection in Cross-Layer Design

Wireless Networks: Multiuser Detection in Cross-Layer Design PDF Author: Christina Comaniciu
Publisher: Springer Science & Business Media
ISBN: 0387277501
Category : Technology & Engineering
Languages : en
Pages : 214

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Book Description
Cross-layer design seeks to enhance the capacity of wireless networks significantly through the joint optimization of multiple layers in the network, primarily the physical (PHY) and medium access control (MAC) layers. Although there are advantages of such design in wireline networks as well, this approach is particularly advantageous for wireless networks due to the properties (such as mobility and interference) that strongly affect performance and design of higher layer protocols. This unique monograph is concerned with the issue of cross-layer design in wireless networks, and more particularly with the impact of node-level multiuser detection on such design. It provides an introduction to this vibrant and active research area insufficiently covered in existing literature, presenting some of the principal methods developed and results obtained to date. Accompanied by numerous illustrations, the text is an excellent reference for engineers, researchers and students working in communication networks.

SMS and MMS Interworking in Mobile Networks

SMS and MMS Interworking in Mobile Networks PDF Author: A. Henry-Labordère
Publisher: Artech House
ISBN: 9781580538916
Category : Computers
Languages : en
Pages : 372

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Book Description
Here is a comprehensive and highly practical guide to SMS and MMS interworking in GSM, TDMA, and CDMA mobile communications systems. The text provides the knowledge needed to plan SMS or MMS interworking both commercially and technically, and to develop software for SMS and MMS centers.

Designing RF Combining Systems for Shared Radio Sites

Designing RF Combining Systems for Shared Radio Sites PDF Author: Ian Graham
Publisher: Artech House
ISBN: 1685690262
Category : Technology & Engineering
Languages : en
Pages : 317

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Book Description
This book explores Radio Access Networks (RANs) within LMR systems, comprising base stations, mobile radios, and hand portable radios. These components facilitate communication among end users via a network of fixed base stations, antennas, and combining systems strategically placed across radio repeater sites throughout the coverage area. This resource also delves into the consequences of interference, highlighting the painstaking efforts required to diagnose and rectify interference issues through field testing and redesign. The central focus being on the design intricacies of base station antennas and combining systems at densely populated shared radio repeater sites. The book underscores how to identify potential sources of interference from co-located transmitters and receivers, effectively surveying sites to anticipate high-level interfering signals. This critical information forms the foundation for crafting base station antenna and combining systems that curtail interference, subsequently optimizing coverage and minimizing costs. Throughout its pages, the book lays out a detailed roadmap for designing LMR systems resilient to interference. By outlining essential principles and methodologies, the book guides practitioners in creating LMR networks that flawlessly align with end users' communication requirements. The resulting systems not only meet expectations but surpass them, offering the coverage area and communication quality demanded by public safety and utility organizations during critical operations. Ultimately, the book serves as an indispensable resource for engineers, designers, and professionals engaged in crafting LMR systems capable of delivering impeccable performance and reliability.

Introduction to OFDM Receiver Design and Simulation

Introduction to OFDM Receiver Design and Simulation PDF Author: Y.J. Liu
Publisher: Artech House
ISBN: 1630817392
Category : Technology & Engineering
Languages : en
Pages : 285

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Book Description
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.