  Filter bank multi-carrier (FBMC) offers superior spectral properties compared
to cyclic-prefix orthogonal frequency-division multiplexing (CP-OFDM), at the
cost of an inherent shortcoming in dispersive channels called intrinsic
imaginary interference. In this paper we propose a new FBMC based communication
system using two orthogonal polarizations for wireless communication systems:
dual-polarization FBMC (DP-FBMC). Using this system we can significantly
suppress the FBMC intrinsic interference. Therefore in DP-FBMC all the
multicarrier techniques used in CP-OFDM systems such as channel equalization,
etc., should be applicable without using the complex processing methods
required for conventional FBMC. DP-FBMC also has other interesting advantages
over CP-OFDM and FBMC: it is more robust in highly dispersive channels, and
also to receiver carrier frequency offset (CFO) and timing offset (TO). In our
DP-FBMC system we propose three different structures based on different
multiplexing techniques. We show that compared to conventional FBMC, one of
these DP-FBMC structures has equivalent complexity and equipment requirements.
We compare DP-FBMC with other systems through simulations. According to our
results DP-FBMC has potential as a promising candidate for future wireless
communication networks.
