Root high-order cumulant MUSIC

Analysis of the fourth-order co-array for a mixture of circular and noncircular signals

“…Moreover, two or all three of the approaches can be combined together to increase the DOFs further. Examples include algorithms combining the noncircular properties and the fourthorder cumulants [15,16,17,18,19], combining the noncircular properties and sparse arrays [20,21,22,23], or combining the fourth-order cumulants and sparse arrays [24,25,26,27,28]. In [29], all the three approaches are employed together.…”