PAPR Analysis for Dual-Polarization FBMC

TL;DR

This paper analyzes the peak-to-average power ratio (PAPR) of dual-polarization FBMC, showing that with appropriate filters, its PAPR is comparable to conventional FBMC, enhancing its practical viability.

Contribution

It provides the first detailed PAPR analysis of DP-FBMC and compares it with FBMC, highlighting the impact of prototype filter choices.

Findings

DP-FBMC has comparable PAPR to FBMC with proper filters.

PAPR performance depends on prototype filter selection.

DP-FBMC maintains advantages over CP-OFDM in dispersive channels.

Abstract

In a recent work we proposed a new radio access technique based on filter bank multi-carrier (FBMC) modulation using two orthogonal polarizations: dual-polarization 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.