Communication channel identification in frequency domain based on the Volterra model

摘要

An efficient technique of continuous communication channel experimental research for identification of amplitude-frequency characteristics (AFC) is given. The technique is Volterra model based and founded on the application of the approximating method of identification of nonlinear dynamic system. The identification is carried out by means of compiling the linear combinations of responses from researched system to the test polyharmonic signals with different amplitudes. Designed software-hardware tools, that realize the methodology of identification, is used for construction of informational model of communication channel in the form of first and second orders AFC on the basis of input-output experiment data, using harmonic and biharmonic test signals.