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access icon free Sparse PTS scheme based on TR schemes for PAPR reduction in FBMC-OQAM systems

© The Institution of Engineering and Technology
Received 17/11/2017, Accepted 22/04/2018, Revised 16/04/2018, Published 02/05/2018

The filter bank multicarrier with offset quadrature amplitude modulation (FBMC-OQAM) has aroused widespread concern in the 5G communication. However, FBMC-OQAM has an inherent drawback of high peak-to-average power ratio (PAPR) that should be mitigated. Here, the authors propose an efficient hybrid scheme based on sparse partial transmit sequence (sparse PTS) scheme and tone reservation (TR) scheme to reduce the PAPR in FBMC-OQAM systems. The first step is to detect and record the location of peak of FBMC-OQAM signals and adopt phase rotation factors (based on PTS) to directly optimise the phase of recorded peak signals, which is called sparse PTS. Then the result is further processed by TR scheme for PAPR reduction. Simulation results show that the proposed hybrid scheme provides better PAPR reduction performance than the two schemes, and can achieve less side information transmitted than the sparse PTS scheme.

Inspec keywords: quadrature amplitude modulation; 5G mobile communication; channel bank filters; signal detection

Other keywords: FBMC-OQAM signals; 5G communication; sparse PTS scheme; filter bank multicarrier; offset quadrature amplitude modulation; PAPR reduction performance; TR scheme; tone reservation scheme; sparse partial transmit sequence scheme; FBMC-OQAM systems; recorded peak signals; efficient hybrid scheme; phase rotation factors; peak-to-average power ratio

Subjects: Modulation and coding methods; Filtering methods in signal processing; Mobile radio systems; Signal detection

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