Abstract
This paper presents a new technique for blind identification of MIMO systems excited by cyclostationary inputs with unique cyclic frequencies. The cyclic spectral density is determined, effectively reducing the system from a MIMO to a SIMO scenario, and curve fitted in the cepstrum domain, which allows for the separation of the input and path effects. This technique is demonstrated using a steel beam excited by two cyclostationary inputs. Two separate modal analyses were conducted using each of the inputs separately. In this way, the other input acts as extraneous noise of equal magnitude, thereby demonstrating the relative insensitivity of the technique to the presence of noise.
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