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In this paper, we derive the analytical behavior of the limiting spectraldistribution of non-central covariance matrices of the "generalinformation-plus-noise" type, as studied in [14]. Through the equation definingits Stieltjes transform, it is shown that the limiting distribution has acontinuous derivative away from zero, the derivative being analytic wherever itis positive, and we show the determination criterion for its support. We alsoextend the result in [14] to allow for all possible ratios of row to column ofthe underlying random matrix.

Analysis of the limiting spectral distribution of large dimensional General information-plus-noise type matrices