Method of formation soft solutions in the system broadband communication channel with unknown parameters

There is resolved the problem of soft-decision symbols indexes forming (SDI) with reference to technology of signal processing with orthogonal frequency division multiplexing (OFDM). The specified technology uses channels with unknown parameters. Such problems are relevant to data exchange between the real-time systems while interaction of two or more mobile objects with wideband communication systems. The SDI calculation is based on Euclidean metrics.