Wireless Communications

Andreas F. Molisch
John Wiley & Sons Ltd. • 668 pages; $75
ISBN: 0-470-84888-X

This book is written for advanced undergraduate and graduate students, as well as for practicing engineers and researchers. Readers are assumed to have an understanding of elementary communication theory, like modulation/demodulation as well as basic aspects of electromagnetic theory. The book is divided into five parts. The first part, the introduction, gives a high level overview of wireless communications. The second part describes the various aspects of wireless propagation channels. As the propagation channel is the medium over which communication happens, understanding it is vital to understanding the remainder of the book. The third part of the book deals with the structure and theory of wireless transceivers. After a short summary of the components of an RF transceiver, the different formats that are used for wireless applications are discussed. The fourth part then takes into account the desire to operate a number of wireless links simultaneously in a given area. This so-called ‘multiple access’ problem has a number of different solutions. The last part of the book describes standardized wireless systems. Standardization is critical so that devices from different manufacturers can work together and systems can work seamlessly across national borders. The book describes the most successful cellular wireless standards, namely GSM (Global System for Mobile Communications), IS-95 and its advanced form CDMA 2000, as well as Wideband CDMA (also known as UMTS). The most important standard for wireless LANs — namely IEEE 802.11 — is also described. A companion web site (www.wiley.com/go/molisch) contains some material which would have made the printed version overly bulky. In particular, the appendices of the various chapters, as well as supplementary material on the DECT (Digital Enhanced Cordless Telecommunications) system, the most important cordless phone standard, can be found there.

To order this book, contact:
John Wiley & Sons Ltd.
The Atrium, Southern Gate Chichester, West Sussex
PO19 8SQ, England
+44 1243 779777

RF Power Amplifiers for Wireless Communications: Second Edition

Steve C. Cripps
Artech House • 465 pages; $139, £82
ISBN: 1-59693-018-7

This is the second edition of this book, where the general flow of the original book has been kept. There are several new chapters and nearly all of the original material has been updated and extended as appropriate. A new Chapter 4 digs a bit deeper into all the things that make PA devices behave differently at gigahertz frequencies than at audio. Some of this analysis leads into another new chapter, Chapter 8, where an undisguised attempt is made to persuade RF designers that transistors do not behave as switches anymore and the classical ‘switch’ modes can be approximated using more conventional RF thinking on impedance and harmonic matching. Modulation and nonlinear effects in PAs are closely interwoven and both are covered in Chapter 9. The design of bias networks for PAs has been promoted to chapter status, Chapter 11. The problems of maintaining stability and simultaneously minimizing supply modulation effects can cause as much difficulty for a PA designer as does the design of the RF matching networks and hopefully this new chapter will provide some useful new insights for the PA practitioner. PA linearization has become a huge subject and several books have been devoted to it. Chapter 14 has therefore been carefully limited to an overview, as in the original edition. Efficiency enhancement techniques, as in the first edition, are considered as a separate subject from linearization and Chapter 10 is a much extended and updated treatment of this important topic. A feature of this second edition is the inclusion of a CD, which contains most of the simulation files and some of the Excel spreadsheets that are used in the text.

To order this book, contact:
Artech House
685 Canton St.
Norwood, MA 02062
(781) 769-9750 ext. 4030;
or 46 Gillingham St.
London SW1V 1HH, UK
+44 (0) 207-8750