An energy efficient Polarization Modulation scheme for nonlinear Power Amplifier

To improve the Power Amplifier (PA) energy efficiency, a Polarization Modulation (PM) scheme that uses the Polarization State (PS) as the information bearing parameter is proposed. Since the PS determined by orthogonally dual-polarized antennas is unaffected by PA, PM can let PA operate in nonlinear region without suffering the distortion. Furthermore, to mitigate the wireless channel depolarization impairment to PM from the polarization dependent loss and the polarization mode dispersion, an Optimal Constellation Pre-compensation (OCP) algorithm is also presented. The simulation results show, with same symbol error rate, PM can reduce the energy consumption per bit by 25% at most compared with the traditional multi-phase shift keying.