ALTERNATIVE LOW-COMPLEXITY APPROACHES FOR PAPR REDUCTION IN FBMC-OQAM SYSTEMS

Abstract

Recently, the Filter Bank Multi-Carrier with Offset-QAM modulation (FBMC-OQAM) system proved to be a strong candidate wave that can replace the conventional OFDM (Orthogonal Frequency Division Multiplexing) through several properties in future mobile generations (5G and 5G+). However, it faces a significant issue, which is high Peak-to-Average-Power-Ratio (PAPR) as all advanced waveforms. Many researchers have proposed either hybrid or non-hybrid techniques adapted to the FBMC-OQAM structure to minimize the PAPR parameter. Nevertheless, all of these techniques suffer from high complexity, which is a significant challenge in practical implementations. Therefore, in this paper, we propose two alternative low-complexity approaches, TD and TC, to effectively mitigate the PAPR problem in FBMC-OQAM systems. Both proposed hybrid schemes achieve superior PAPR performance compared to the conventional TR and very competitive results in comparison to the existing literature algorithms while requiring less computational complexity.

Keywords

• fbmc-oqam
• papr
• tr
• td
• tc