Chapter

Fading and Shadowing in Wireless Systems

pp 1-6

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Overview

  • P. Mohana ShankarAffiliated withElectrical and Computer Engineering, Drexel University Email author 

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Abstract

Wireless communications are ubiquitous, covering all aspects of everyday life from simple voice communication to vital transmission of critical information in battle fields and healthcare complexes. This expansive use of wireless channels is an important tool for fast and efficient means of data transmission. It requires a careful study of the characteristics of the channel so that the communication can be maintained with high fidelity and reliability. In this context, the study of the signal transmission and deterioration in the signal quality and characteristics as they pass through these channels assumes great significance. In this book, the signal strengths in these channels are described using appropriate statistical models. Such modeling and study of the models present a challenge to the instructors, graduate students, and researchers who are in the forefront of developing techniques to improve signal quality and to enhance overall reliability of the communication link between the sender and the recipient. This book is an effort to address this challenge. It provides a thorough discussion of the models used to describe signal strength fluctuations. It also examines the diversity techniques which are developed to mitigate the effects of these fluctuations.