PAPR Analysis for Dual-Polarization FBMC

Abstract

In a recent work we proposed a new radio access technique based on filter bank multi-carrier (FBMC) modulation using two orthogonal polarizations: dualpolarization FBMC (DP-FBMC). We showed that with good cross-polarization discrimination (XPD), DP-FBMC solves the intrinsic imaginary interference shortcoming of FBMC without extra processing. DP-FBMC also has other interesting advantages over cyclic prefix orthogonal frequency-division multiplexing (CP-OFDM) and FBMC such as more robustness in dispersive channels, and it is also more robust to receiver carrier frequency offset (CFO) and timing offset (TO). In this paper we analyze the peak to average power ratio (PAPR) of DP-FBMC and compare PAPR simulation results with that of conventional FBMC, for different prototype filters and overlapping factors. According to the analysis and results, with a proper choice of prototype filter, DP-FBMC has comparable PAPR to FBMC.

Dual-Polarization OFDM-OQAM Wireless Communication System

“…For FBMC systems we assume frame structures without end tails caused from filter tails from the overlapping factor. In [14] we study the PAPR of DP-FBMC systems in detail. As can be seen, the DP-FBMC Structure I has PAPR very close to that of conventional FBMC and CP-OFDM for larger overlapping factors such as K = 8.…”