PAPR Reduction in the FBMC-OQAM System via Segment-Based Optimization

Multicarrier modulation (MCM) schemes have been intensively studied and developed, because of their numerous advantages, which include high data rate and immunity to multipath fading. Among MCM schemes, filter bank multicarrier with offset quadrature amplitude modulation (FBMC-OQAM) has attracted co...

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Bibliographic Details
Published in:IEEE access 2018-01, Vol.6, p.4994-5002
Main Authors: Moon, Ji-Hyun, Nam, Ye-Ri, Kim, Jeong-Ho
Format: Article
Language:English
Subjects:
Algorithms
Bit error rate
Clipping signal recovery
Error analysis
FBMC-OQAM
Filter banks
high PAPR
Modulation
Optimization
overlap
Partial transmit sequences
Peak to average power ratio
Quadrature amplitude modulation
segment-based optimization
Segments
Time-domain analysis
Transmitters
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Summary:Multicarrier modulation (MCM) schemes have been intensively studied and developed, because of their numerous advantages, which include high data rate and immunity to multipath fading. Among MCM schemes, filter bank multicarrier with offset quadrature amplitude modulation (FBMC-OQAM) has attracted considerable interest in recent years. However, the FBMC-OQAM system exhibits a high peak-to-average power ratio (PAPR). In this paper, we investigate the FBMC-OQAM system and present a solution for the problem of high PAPR that involves two separate components: minimizing the PAPR of each data block and optimizing each segment based on the preceding result. Unlike conventional partial transmit sequence techniques, the new method uses fewer combinations of phase factors, thereby decreasing the complexity of the algorithm while still reducing PAPR. In addition, sparse clipping signals are recovered by compressed sensing, and the bit error rates were analyzed based on sparsity level. The reductions in PAPR were also numerically evaluated using simulations. The simulation results confirm that the proposed technique effectively reduces the high peaks in the FBMC-OQAM system.
ISSN:2169-3536
2169-3536
DOI:10.1109/ACCESS.2018.2794366