Spectrally Efficient 60-GHz xy-MIMO Data Transport Over a Radio-Over-Fiber System for Gigabit Wireless Local Area Networks

A radio-over-fiber system can provide a robust backbone network for the deployment of multi-gigabit wireless local area networks. By transmitting 2x2, MIMO signals over two polarizations in an optical fiber, the authors developed a new radio-over-fiber system to support MIMO-based wireless communications to improve the signal diversity or multiplexity. Two-Gb/s millimeter-wave signals were successfully transmitted through a 10-km optical fiber and a wireless channel with the equivalent spectral efficiency of 2bits/Hz using MIMO spatial multiplexing.