无线传播信道的Wiley建模附matlab代码.zip

# Modeling the Wireless Propagation Channel: A Simulation Approach with MATLAB® [](https://onlinelibrary.wiley.com/doi/book/10.1002/9780470751749) [https://onlinelibrary.wiley.com/doi/book/10.1002/9780470751749](https://onlinelibrary.wiley.com/doi/book/10.1002/9780470751749) ## Introduction This book deals with several issues related to the wireless propagation channel using a simulation approach. This means thatwe will be generating synthetic, but realistic, series of relevant propagation parameters as a function of time or traversed distance. It is hoped that this will allow the reader to become acquainted with this topic in a simpler, more intuitive way than by using cumbersome mathematical formulations. This will be done in a step-by-step fashion whereby new concepts will be presented as we progress in our familiarization process with the wireless propagation channel. This book will reproduce the characteristics of the wanted and interfering signals and especially their dynamics. Thus, time series will be generated in most of the projects proposed. Sometimes, the term ‘time series’ will be used indistinctly for series with the abscissas in time units and in length units (traveled distance), thus explicitly showing the time and/or location variability in the received signal, or in the propagation channel parameters of interest: power, voltage, phase, attenuation, frequency response, impulse response, etc. The procedure followed in all chapters will be to first define a propagation scenario, either statistically or geometrically, then generate one or several time series and, finally, perform a statistical analysis of the produced series, in order to extract relevant parameters from which conclusions may be drawn. Only in Chapter 1 we will be using series already produced using simulators from other chapters. ## Content features Part of the proposed material currently complements a lecture on Mobile Communications Systems corresponding to the fifth year of a Telecommunications Engineering course (Masters degree) at the University of Vigo, Spain. This lecture is complemented by simulation work carried out during one semester in sessions of two hours per week, where several issues related to the mobile radio channel and, in general, to any radio channel are studied by means of simulations carried out in Matlab. This book covers a number of issues related to the mobile or wireless propagation channel on a step-by-step basis, where we briefly introduce the needed theoretical background relevant to the topic at the beginning of each chapter. This book is not intended as a theoretical book with a full coverage of the various fundamental concepts, and existing models. It is rather a complement to such books. A thorough coverage of the various topics discussed in this book can found in some of the books mentioned in the References of the various chapters.  This book is structured as follows: first a brief theoretical background is provided, then a number of simulation projects are proposed. In some cases, further theoretical background relative to each specific project is provided. Then, we go on to describe the simulation approach followed. The basic result in each simulation is a synthetic series. This is further processed to obtain a number of statistical parameters, e.g., a cumulative distribution. The obtained results are commented upon to point out the underlying concepts, and the influence of the inputs employed. The codes for all projects will be provided by the authors on request, see email addresses below. The reader is also prompted to change the inputs to observe the influence of such changes in the obtained results. Sometimes, the reader is also encouraged to modify the code provided to implement other algorithms not included in the text. Each chapter ends with a list of references, and the list of Matlab scripts and functions used. ## Installation and configuration The Matlab software developed is not totally optimized, since the main objective is that the algorithms implemented can be better understood by the reader. Such programs can also be modified by the reader and used in the development of more complex simulators. If the reader identifies problems in the software, he or she is encouraged to report them to the authors ([email protected]) so that we can make the required updates or provide solutions. Readers can contact the above email addresses so that we can supply them with the ftp address (or alternative means) for downloading the software. We have used version 7 of Matlab, and the programs may not work on earlier versions. Matlab's signal processing toolbox should also be available for a proper operation of the programs supplied. ## Who is targeted? We recommend this book for different types of readers going through different stages in their process to approaching the wireless propagation channel. Possible readers include senior undergraduates, and first-year graduate instructors and students for complementing their lecture materials with a practical, simulation-based book. The Matlab functions and scripts provided should allow them to quickly step through the first learning phases. The programs provided could help these students in developing their own programs, for example, for their project and thesis work. The material supplied could also be of interest to first-year Ph.D. students. Other potential readers could be the self-learning professionals who need to get acquainted with this topic by first gaining a good intuitive insight into the wireless channel. In a second step, these readers could go on and approach other texts where more thorough mathematical and statistical developments of the various phenomena are available. Other possible readers are practicing engineers who are involved in projects where the dynamics of the channel need to be included in their studies. System engineers who work on the definition of the transmission scheme needed for a new system under development, where a good understanding of the basic propagation phenomena is needed, can find the help they may require on the channel dynamics in this book. ## Table of contents ### 1. Introduction to Wireless Propagation We present a brief introduction to the basic concepts and mechanisms driving the wireless propagation channel. Then, we present very simple time-series analysis techniques which cover the basics previously introduced. These include the fast variations due to multipath and the combined effects of shadowing and multipath. Finally, we have a look into the signal's complex envelope, and we plot its magnitude and phase. We also present the Rayleigh and Rice cases which correspond to harsh and benign propagation conditions. Code: [Cap. 01: Introduction to Wireless Propagation.](https://github.com/RadioPropagationChannel/Wiley-Modeling-the-Wireless-Propagation-Channel/tree/main/code/Cap01_Introduction%20to%20Wireless%20Propagation) ### 2. Shadowing Effects We present several techniques for quantifying the shadowing effects caused by totally absorbing screens. Even though the formulations presented are somehow more involved than those in other chapters, we have thought it helpful to provide the reader with tools to reproduce the effect of the presence of buildings and other large obstacles. In this way, the reader will be able to replicate the effects of the terrain or the signal variations while driving along a street. We also wanted to point out that, through fairly simple physical models, it is possible to reproduce the inherent cross-correlation properties observed between wanted or interfering signals converging on a given mobile terminal. Code: [Cap. 02: Shadowing Efects.](https://github.com/RadioPropagationChannel/Wiley-Modeling-the-Wireless-Propagation-Channel/tree/main/code/Cap02_Shadowing%20Effects) ### 3. Coverage and Interference Looks into the shadowing phenomen