  We propose and experimentally demonstrate an interference management system
that removes wideband wireless interference by using photonic signal processing
and free space optical communication. The receiver separates radio frequency
interferences by upconverting the mixed signals to optical frequencies and
processing the signals with the photonic circuits. Signals with GHz bandwidth
are processed and separated in real-time. The reference signals for
interference cancellation are transmitted in a free space optical communication
link, which provides large bandwidth for multi-band operation and accelerates
the mixed signal separation process by reducing the dimensions of the un-known
mixing matrix. Experimental results show that the system achieves 30dB
real-time cancellation depth with over 6GHz bandwidth. Multiple radio frequency
bands can be processed at the same time with a single system. In addition,
multiple radio frequency bands can be processed at the same time with a single
system.
