A transfer of power or information can occur between two or more points without wires, cables or fiber optics facilitating the transmission. This is possible through wireless technology using infrared, radio-frequency, microwave or acoustic wave communication. Cell phones, remote garage-door openers, two-way radios, GPS receivers, television remote controls, etc. use wireless technology. Wireless telecommunication networks are implemented using radio communication. Wireless sensor networks, cell phone networks, wireless local area networks, etc. are examples of wireless networks. The use of wireless modems, satellites and microwave transmitters has facilitated the access to Internet. This book unfolds the innovative aspects of wireless communication. It is a valuable compilation of topics, ranging from the basic to the most complex advancements in this area of study. The coherent flow of topics, student-friendly language and extensive use of examples make it an invaluable source of knowledge.