Performance of Poly-Polarization Multiplexing in Narrow-Band Wireless Communication Aided by Pre-Compensation and Multi-Notch OPPFs

摘要

In this letter, a poly-polarization multiplexing system applying orthogonal dual polarized antennas is designed to enhance the spectrum efficiency for narrow-band wireless communication. In order to minimize the co-channel interference, we apply the multi-notch oblique projection polarization filters (OPPFs) to separate parallel streams at the same frequency at the receiver. Due to the polarization dependent loss effects of the narrow-band polarized channel, the pre-compensation method is proposed to mitigate the impairment of the signal-to-interference ratio in OPPFs. Whereas, the signal-to-noise of polarized channel would decrease after pre-compensation. Therefore, the optimal pre-compensation coefficient is calculated to obtain maximum capacity of the multiplexing system by signal to interference plus noise ratio. Simulation results demonstrate the performance of our design.