Modern wireless communications are one of the fastest growing human activities. Just during one-third of а human life, three generations of mobile cellular systems have emerged and wireless networks have been established that now define an entirely new communication style between people. There are fourth generation networks (LTE, WiMAX) now, characterized by a variety of new services and fast data transfer, multimedia and software radio. The growth rate in wireless modes of speech and data transfer for private and corporate purposes is really impressive. There is expansion and qualitative transformation in functions of wireless networks for Internet connection, secure data and image transmission, voice over Internet VoIP, new multimedia services, “mobile wireless office”, tele-medicine, radio frequency identification devices, sensor networks, etc. The key moment was in 2004 when the number of users of “wireless” Internet worldwide surpassed the users with “wired” Internet. Wireless LANs (WLAN) develop nowadays particularly fast as well as personal computers and terminals with their interface devices (Personal Area Networks, PAN). Under discussion are already networks with working range around the human body (Body Area Networks, BAN). Unification of computer, wireless, optical and mobile networks takes place, new functionalities and next generation services constantly emerge. This inevitably changes the ways of communication and social development – social networks, electronic data interchange, e-government, etc. In 2020, 5G communications will be up to date: tremendous transfer speeds up to 10 Gb/s, thousands of users, hundreds of thousands of sensor links, Internet of Things IoT, smart homes, smart cities, driverless cars, and more.