A Fiber-wireless uplink consists of a wireless channel followed by a radio-over-fiber
(ROF) link. Typically, nonlinear distortion of the ROF link is the major concern
when the radio frequency is only a few GHz. This especially severe in the uplink,
because of the multipath fading of the wireless channel. A Hammerstein type decision
feedback equalizer is described for the fiber wireless uplink, that compensates
for nonlinear distortion of the ROF link as well as linear dispersion of the wireless
channel. Since the linear and nonlinear parts of the receiver are separated, tracking
the fast changing wireless channel is virtually independent of compensating for
the relatively static nonlinearity. Analytical results show that the receiver provides
excellent compensation with notably less complexity.
