This book explains the functional parts of the Wireless LAN system and their basic operations. Explained is the basic operation of WLAN systems and how performance can vary based on a variety of controlled and uncontrolled events. This book will explain the main differences between the WLAN system versions such as frequency and data rate together with a version that is compatible with one another. Tips are included on how to install a WLAN system along with common problems you might encounter and possible solutions you use. The basics of frequency hopping and spread spectrum technology used in 802.11 systems will help you to understand how 802.11 systems can co-exist with devices using the same ISM frequency band. You will learn how to use the system independently 802.11 DCF "Ad-hoc" and / or controlled PCF "non-contention" based operations. Various types of antennas commonly used in WLAN systems are explained and you will find a typical range for WLAN systems and how to expand the reach of the WLAN system through the use of directional antennas. Comparison of different WLAN System Version. How to Install WLAN System.