Second-order blind deconvolution of single input multiple output (SIMO) fin
ite impulse response (FIR) channels is considered herein. A major drawback
of several blind diversity techniques using antenna arrays/temporal-oversam
pling is high sensitivity to the choice of the model order. In this contrib
ution, a robust method using only the second-order statistics is described.
It provides high and robust estimation accuracy even for a limited sample
size and an unknown model order. In contrast to other suggested approaches,
that often exploit properties valid only in the large sample case, the pro
posed method is applicable both in the large sample and high signal-to-nois
e ratio (SNR) scenario.