This book is compiled in such a manner that it will provide in-depth knowledge about the theory and practice of wireless communications and technology. It describes in detail the various concepts and technologies used in this subject. Wireless communication allows transfer of data in the form of text, voice and image between two points which are not connected via wires. Wireless communication technology is used in mobile and portable applications, wireless networks, and personal digital assistants (PDAs), etc. Most of the topics introduced in this text cover new techniques and applications of the subject. Different approaches, evaluations and methodologies on the subject have been included in it. For all those who are interested in wireless communications and technology, this textbook can prove to be an essential guide.