... Channels¹

This research was supported by ONR under Grant N00014-98-1-0892.

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.

... distribution.²

As a matter of notation, throughout this paper we use the symbol $\doteq$ to mean ``equivalent within an additive and/or multiplicative constant'' for equations in which such constants have no effect for purposes here.

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.