  This paper considers the asymptotic behavior of two-source block-fading
single-antenna Gaussian interference channels in the high-SNR regime by means
of the diversity-multiplexing tradeoff. We consider a general setting where the
users and the average channel gains are not restricted to be symmetric. Our
results are not just extensions of previous results for symmetric networks, as
our setting covers scenarios that are not possible under the symmetric
assumption, such as the case of "mixed" interference, i.e., when difference
sources have different distances from their intended receivers. We derive upper
and lower bounds on the diversity. We show that for a fairly large set of
channel parameters the two bounds coincides.
