Methods to improve equalization in connection systems with OFDM

Authors: Kovalev V. V., Pokamestov D. A.

Annotation: This article discusses methods to improve equalization in multipath channel with noise for telecommunications systems with OFDM. The OFDM access method was used in fourth generation communication system. Compared with previous technologies, it has several advantages. The study solves a prob- lem of finding the best way to position pilot-signals to improve the quality of the received information. As basis for application of these methods the receiver–transmitter complex of OFDM signals, implemented in MatLAB is used. The main results of the work consist in obtaining the dependencies of probabilities of bit errors on the signal-to-noise ratio by the simulation method. The results can be used in the development of advanced communication systems, including fifthgeneration wireless communication systems.

Keywords: ofdm, equalization, multipath, matlab, pilotsignal