A new way to reduce ICI of OFDM system with precoding

In this paper we groped for the feasibility about ICI decreasing in precoding OFDM system. First, a model of precoding OFDM system was introduced, then, we present the algorithm of the precoding matrix, Through simulation and analysis, we get the ICI of OFDM system with precoding is reduced, otherwise, the complexity of the receiver does not increase, so the method adapts to the downlink especially.