A method and apparatus for pilot signal transmission is disclosed herein.
In particular, a pilot transmission scheme is utilized where pilot
sub-carrier bandwidth differs from data sub-carrier bandwidth. Because
some user's data sub-carriers will no longer have the user's pilot
sub-carriers adjacent to them, the set, or pattern of sub-carriers used
by the pilot blocks changes at least once in a burst. Changing the pilot
block pattern (the set of occupied pilot block sub-carriers) at least
once in the burst serves to increase the frequency proximity of occupied
data sub-carriers to occupied pilot sub-carriers in the burst.