A Hybrid PAPR Reduction Method Based on SLM and Multi-Data Block PTS for FBMC/OQAM Systems

Han Wang

doi:10.3390/info9100246

Abstract

The filter bank multicarrier employing offset quadrature amplitude modulation (FBMC/OQAM) is a candidate transmission scheme for 5G wireless communication systems. However, it has a high peak-to-average power ratio (PAPR). Due to the nature of overlapped signal structure of FBMC/OQAM, conventional PAPR reduction schemes cannot work effectively. A hybrid PAPR reduction scheme based on selective mapping (SLM) and multi data block partial transmit sequence (M-PTS) methods is proposed for FBMC/OQAM signals in this paper. Different from the simple SLM-PTS method, the proposed hybrid algorithm takes into account the overlapping effect of multiple adjacent data blocks on its PTS process. From simulation results, it can be obtained that the proposed method can offer a significant PAPR reduction performance improvement compared with the SLM, PTS and SLM-PTS methods. The proposed method can effectively reduce the PAPR in FBMC/OQAM systems.

Highlights

Multicarrier technology is widely used in various wireless communication systems [1,2,3].Recently, many researchers have given a great deal of attention to the filter bank multicarrier (FBMC)employing the offset quadrature amplitude modulation (OQAM) technique [4,5,6], since it is considered as a potential alternative to the best-known orthogonal frequency division multiplexing (OFDM)scheme for 5G wireless communication systems [7,8,9,10]
This paper provides the following three main contributions: 1
The purpose of this paper is to propose an effective peak-to-average power ratio (PAPR) reduction method for FBMC/OQAM

Summary

Introduction

Multicarrier technology is widely used in various wireless communication systems [1,2,3].Recently, many researchers have given a great deal of attention to the filter bank multicarrier (FBMC)employing the offset quadrature amplitude modulation (OQAM) technique [4,5,6], since it is considered as a potential alternative to the best-known orthogonal frequency division multiplexing (OFDM)scheme for 5G wireless communication systems [7,8,9,10]. Multicarrier technology is widely used in various wireless communication systems [1,2,3]. Employing the offset quadrature amplitude modulation (OQAM) technique [4,5,6], since it is considered as a potential alternative to the best-known orthogonal frequency division multiplexing (OFDM). FBMC/OQAM, without inserting cyclic prefix, can overcome the drawbacks of OFDM. The FBMC/OQAM utilizes an inverse fast fourier transform/fast fourier transform (IFFT/FFT)-based filter bank for time-frequency-localized (TFL). FBMC/OQAM is more complex than cyclic prefix (CP)-OFDM, it can provide higher robustness against carrier frequency offsets, significantly reduce out-of-band emissions, and have better spectrum in bandwidth-sensitive systems [12]. Since FBMC/OQAM is a multi-carrier transmission technology, it has high peak-to-average power ratio (PAPR). In order to make use of FBMC/OQAM technical characteristics, it is very necessary to conduct the study of how to reduce the PAPR of FBMC/OQAM systems

Objectives

Results

Conclusion