The present invention relates to the field of wireless access systems and
more particularly to a broadband wireless access system and a
transmission method for such system. At least two data streams (2, 3, 4)
are simultaneously transmitted in a multi-user channel (1) having a
location dependent capacity. The data streams (2, 3, 4) are transmitted
on the same radio resources. Preferably, the data streams are combined in
a transmitter and separated in a receiver using different modulation
and/or coding for the data streams.