One of the procedures for increasing the number of multiinput and multi-output (MIMO) branches without increasing the computational cost for MIMO detection or multiplexing is to exploit parallel transmissions by using polarization multiplexing. In this paper the effectiveness of using polarization multiplexing is confirmed under the existence of polarization rotation, which is inevitably present in short-range multiinput and multi-output (SR-MIMO) channels with planar array antennas. It is confirmed that 8 × 8 SR-MIMO transmission system with polarization multiplexing has 60 bit/s/Hz of channel capacity. This paper also shows a model for theoretical cross polarization discrimination (XPD) degradation, which is useful to calculate XPD degradations on diagonal paths.
- Polarization multiplexing
ASJC Scopus subject areas
- Computer Networks and Communications
- Electrical and Electronic Engineering