Low-PAPR Preamble Design for FBMC Systems

TL;DR

This paper introduces a new family of low-PAPR preambles for FBMC systems using Golay sequences, achieving PAPR below 3 dB with high probability by inserting zero guard symbols.

Contribution

It proposes the use of Golay sequences as preambles in FBMC, providing a method to significantly reduce PAPR in these systems.

Findings

Preamble PAPR less than 3 dB achievable with zero guard symbols.

Golay sequences effectively reduce PAPR in FBMC preambles.

The method applies to PHYDYAS and Hermite filters with overlapping factor 4.

Abstract

This paper presents a family of training preambles for offset QAM (OQAM) based filter-bank multi-carrier (FBMC) modulations with low peak-to-average power ratio (PAPR) property. We propose to use binary Golay sequences as FBMC preambles and analyze the maximum PAPR for different numbers of zero guard symbols. For both the PHYDYAS and Hermite prototype filters with overlapping factor of 4, as an illustration of the proposed preambles, we show that a preamble PAPR less than 3 dB can be achieved with probability of one, when three or more zero guard symbols are inserted in the vicinity of each preamble.