International Journal of Intelligent Systems and Applications(IJISA)

ISSN: 2074-904X (Print), ISSN: 2074-9058 (Online)

Published By: MECS Press

IJISA Vol.8, No.4, Apr. 2016

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

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Sandeepkumar Vangala, S.Anuradha

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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