An dual-polarized transmission system with OFDM multiplexing

In this paper, we propose a novel dual-polarized transmission system with orthogonal frequency division multiplexing (OFDM). The purpose of using the dual-polarized frequency reuse scheme is to double the capacity of the OFDM system. We modify the one-tap equalizer of the OFDM system to a cross-structure compensator to enable dual-polarized signals be transmitted in an OFDM multiplexing environment. Simulation results show that simple cross-structure compensator can efficiently reuse the frequency band and can still perform well even under the multipath channel. The only requirement is that the weightings should be adjusted adaptively in accordance with the change of environment.