Overlapped Segmental Active Constellation Extension for the PAPR Reduction of the OFDM-OQAM System

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Sandeepkumar Vangala 1,* S. Anuradha 1

1. Dept. of Electronics and Communication Engineering, National Institute of Technology Warangal, India

* Corresponding author.

DOI: https://doi.org/10.5815/ijisa.2016.04.03

Received: 27 Jun. 2015 / Revised: 11 Oct. 2015 / Accepted: 22 Dec. 2015 / Published: 8 Apr. 2016

Index Terms

OFDM-OQAM, Peak-to-Average Power Ratio, Active Constellation Extension, Overlapped Segment


Orthogonal frequency division multiplexing with Offset Quadrature Amplitude Modulation (OFDM-OQAM) technique has drawn significant interests in recent years. However, most of the existing OFDM peak-to-average ratio (PAPR) reduction schemes cannot be used in the OFDM-OQAM system directly. In this paper, a modified scheme called overlapped segmental Active Constellation Extension (OS-ACE) is proposed to deal with the high PAPR problem specifically in the OFDM-OQAM system. For the proposed OS-ACE scheme, the input signals are divided into a number of overlapped segments and then the ACE operation is processed on each segment. Simulation results show that the modified scheme used in the OFDM-OQAM system can provide better performance than conventional ACE scheme directly used in the OFDM-OQAM system, and even outperforms conventional ACE scheme applied in the OFDM system.

Cite This Paper

Sandeepkumar Vangala, S.Anuradha, "Overlapped Segmental Active Constellation Extension for the PAPR Reduction of the OFDM-OQAM System", International Journal of Intelligent Systems and Applications(IJISA), Vol.8, No.4, pp.26-32, 2016. DOI:10.5815/ijisa.2016.04.03


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