OFDM signal formation with adaptive guard interval duration change

The method of dealing with the phenomenon of intersymbol interference, based on a new OFDM technology, based on the adaptive OFDM-symbols cyclic prefix length changing, depending on the conditions of radio signals propagation, which allows to increase the effective bandwidth of fourth generation cellular networks in size from 17 to 30%, compared with the maximum value of the cyclic prefix length was improved. In particular, the method which allows the statistical analysis of the collected data on the mobile station power received signals allows to determine the optimal length of the OFDM symbols cyclic prefix. The principles of device building for adaptive OFDM-symbol cyclic prefix length changing in OFDM-signals shaping based on the proposed method were developed.