The
subject matter described herein relates to various
antenna element configurations,
antenna array configurations, their operations including various systems and methods to generate modulated data for transmission by an RF
antenna array via an
optical processing engine. The
subject matter includes
optical processing engine structure and methods (e.g., modulating in the optical domain,
MIMO and
spatial modulation via RF beam formation, coherent transmission of RF
signal components, coherent operation of spatially separate RF antenna arrays) that may be implemented with the various RF
antenna array structures. In some examples, the
system combines the virtues of digital, analog and
optical processing to arrive at a solution for scalable, non-blocking, simultaneous transmission to multiple UE-s. Much of the
system architecture is independent of the RF carrier frequency, and different frequency bands can be accessed easily and rapidly by tuning the optical source (TOPS). In some examples, multiple communication channels may be transmitted simultaneously to different locations. The
transmitter may be formed by an array of optically fed antennas.