Adaptive antenna systems of telecommunication networks

Abstract

In modern wireless telecommunication networks are widely used adaptation to change, for example, communication channel parametres. Adaptive modulation, the coding and so on is thus used, that considerably improves efficiency of systems. Recently adaptation also is used in antenna systems. Substantial increase of efficiency of wireless networks as a whole is thus reached. "Intellectual" antennas (Smart-antennas) which can change the form of the directional pattern depending on concrete circumstances in a communication channel, and ways of increase of their efficiency are investigated.