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Performance Enhancements In A Frequency Hopping Gsm Network

RRP $491.99

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Due to the explosive global growth in the number of mobile subscribers, as well as the growth predicted in the mobile data segment, the need for improved spectrum efficiency on the radio interface becomes more and more important. Frequency hopping (FH) is an effective method for improving the spectrum efficiency. One of the advantages of FH is that it can be combined with other spectral efficiency improving features like power control, handover and reuse partitioning.
Performance Enhancements in a Frequency Hopping GSM Network covers FH and some of the additional features in detail. It begins with an in-depth description of the basic concept of FH on link level as well as on system level. Different methods have been used for analysis, such as link level simulations, network level simulations and classic tele-traffic theory.
Special features of Performance Enhancements in a Frequency Hopping GSM Network:

  • Combines the practical experiences of operator and vendor with more theoretical research methods. An in-depth treatment of prevailing problems in GSM networks;
  • Presentation of a new method, computer-aided network design (CAND), which has been developed to analyse the complex network structures of a GSM network. CAND provides the possibility for more realistic performance evaluations than conventional methods;
  • Provides GSM-specific analysis of functionality improvements in power control, discontinuous transmission, and several handover algorithms;
  • Explanation of the quality and capacity gains of features like the combination of FH and reuse partitioning, referred to as intelligent frequency hopping;
  • A frequency planning method for FH GSM networks is presented. This method exploits the benefits from FH directly in the allocation process, increasing the overall frequency plan.


Frequency Methods In Oscillation Theory

RRP $519.99

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The linear theory of oscillations traditionally operates with frequency representa­ tions based on the concepts of a transfer function and a frequency response. The universality of the critria of Nyquist and Mikhailov and the simplicity and obvi­ ousness of the application of frequency and amplitude - frequency characteristics in analysing forced linear oscillations greatly encouraged the development of practi­ cally important nonlinear theories based on various forms of the harmonic balance hypothesis [303]. Therefore mathematically rigorous frequency methods of investi­ gating nonlinear systems, which appeared in the 60s, also began to influence many areas of nonlinear theory of oscillations. First in this sphere of influence was a wide range of problems connected with multidimensional analogues of the famous van der Pol equation describing auto­ oscillations of generators of various radiotechnical devices. Such analogues have as a rule a unique unstable stationary point in the phase space and are Levinson dis­ sipative. One of the pioneering works in this field, which started the investigation of a three-dimensional analogue of the van der Pol equation, was K. O. Friedrichs's paper [123]. The author suggested a scheme for constructing a positively invariant set homeomorphic to a torus, by means of which the existence of non-trivial periodic solutions was established. That scheme was then developed and improved for dif­ ferent classes of multidimensional dynamical systems [131, 132, 297, 317, 334, 357, 358]. The method of Poincare mapping [12, 13, 17] in piecewise linear systems was another intensively developed direction.


Radio Frequency Principles And Applications

RRP $414.99

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"Now, in a single convenient volume, you can have all the information you need on real-world applications of electromagnetic theory, including the prediction, analysis, and measurement of electromagnetic fields and their effects. RADIO FREQUENCY PRINCIPLES and APPLICATIONS will guide you from the basics of electromagnetic theory to the full range of new and vital applications.<br> <br> Author Albert A. Smith, Jr. provides a wealth of practical information in an accessible style, without using obtuse theory or requiring complex mathematical derivations.<br> <br> This exceptionally ""readable"" text ties together the various related topics in a logical development, and the material flows from the fundamentals of electromagnetic fields to areas of practical application. The numerous figures provide helpful illustrations, and the appendicies offer additional mathematical details.<br> <br> This book will be of particular use to engineers working in the many diverse fields relating to the application of electromagnetic concepts, including engineers involved in RF technology, EMC, radio wave propagation, antennas, radio frequency environments, wireless communications, microwaves, and space systems.<br> <br> Professors: To request an examination copy simply e-mail collegeadoption@ieee.org."<br> <br> Sponsored by:<br> IEEE Electromagnetic Compatibility Society, IEEE Microwave Theory and Techniques Society.


Frontiers In European Radiology

RRP $409.99

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ContentsAbdominal and Thoracic Magnetic Resonance Angiography:Challenges, Technical Approaches and First ClinicalApplications. H.U. Kauczor, R. Hausmann, W. SemmlerMagnetic Resonance Spectroscopy of Skeletal Muscle.F. Tr{ber, W.A. Kaiser, G. Layer,C. Kuhl, M. ReiserHepatic Tumors: Relaxometry and Quantitative TissueCharacterization with Magnetic Resonance Imaging.A. Steudel, F. Tr{ber, M. ReiserLiver-Specific Particulate Contrast Agents: An OverviewI. Ivancev, A. LunderquistContrast Medium Induced Nephropathy:Animal ExperimentsH.S. Thomsen et al.Rheological Properties of Blood after Diagnostic CardiacCatheterisation with Iopromide. R. Bach et al.Color Coded Doppler Sonography of the Male Urethra DuringVoiding: New Observations of Flow in an Aqueous Medium andTheir Physical Foundations. P. H}bsch, F. Hager, E. BenesDevelopment of a Model of Arterial Stenosis Analysis UsingDigital Subtraction Angiography: A Parametric Study ofImage Quality. C. Renaudin, I. Magnin, A. AmielArterial Calcifications in Thoracoabdominal ComputerTomography: Frequency and Correlation with Risk Factors andCardiovascular Diseases. J. G|rich et al.


Time Frequency Analysis

RRP $958.99

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Time Frequency Signal Analysis and Processing covers fundamental concepts, principles and techniques, treatment of specialised and advanced topics, methods and applications, including results of recent research.
This book deals with the modern methodologies, key techniques and concepts that form the core of new technologies used in IT, multimedia, telecommunications as well as most fields of engineering, science and technology. It focuses on advanced techniques and methods that allow a refined extraction and processing of information, allowing efficient and effective decision making that would not be possible with classical techniques. The Author, fellow of IEEE for Pioneering contributions to time-frequency analysis and signal processing education, is an expert in the field, having written over 300 papers on the subject over a period pf 25 years.
This is a REAL book, not a mere collection of specialised papers, making it essential reading for researchers and practitioners in the field of signal processing.
*The most comprehensive text and reference book published on the subject, all the most up to date research on this subject in one place
*Key computer procedures and code are provided to assist the reader with practical implementations and applications
*This book brings together the main knowledge of time-frequency signal analysis and processing, (TFSAP), from theory and applications, in a user-friendly reference suitable for both experts and beginners



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