Abstract: 2×2 MIMO Radio over Fiber system with OFDM modulation at 60 GHz is presented in this paper. 60-GHz technology is considered as a best solution for multi Gb/s applications because of the wide 7 GHz spectrum.4 QAM and 16 QAM modulation system is employed and transmitted over 25 km and received with data rate upto69Gb/s. Optical coupler is utilised to implement the 2×2 MIMO system.Also the optical carrier was recovered fromthe millimetre wave produced for Full Duplex application .Eye diagrams and constellations are used to evaluate theefficiency of the system.

Keywords: radio-over-fiber (RoF),Full Duplex system, Multiple-input-multiple-output (MIMO),OrthogonalFrequency -Division Multiplexing (OFDM).