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Wireless Personal Communications

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07-04-2022

Optimizing the Reduction of PAPR of OFDM System Using Hybrid Methods

Authors: Malleswari Akurati, Satish Kumar Pentamsetty, Satya Prasad Kodati

Published in: Wireless Personal Communications | Issue 3/2022

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Abstract

Orthogonal Frequency Division Multiplexing (OFDM) is a multi-carrier modulation, which transfers multimedia data in both wired/wireless communications. It suffers from high Peak to Average Power Ratio (PAPR) which slowdowns the implementation of OFDM in practical communication systems due to the nonlinear operation of High-power amplifier. It makes the OFDM system design more complex and costlier. Many authors presented different strategies to mitigate the high PAPR. One of them is companding which lowers the out-of-band interference in OFDM, but it degrades the Bit Error Rate (BER) performance. The other one is the Selected mapping (SLM) which improves the BER performance, but the system complexity is increased for large values of phase rotation factor. Hence, a new hybrid algorithm is proposed in this paper which is the combination of SLM with different types of companding techniques to acquire the advantages of both the techniques. With this proposed scheme, the PAPR is reduced by a large amount compared to conventional OFDM and OFDM with SLM techniques. Also, it enhances the spectral efficiency and reduces system complexity. The outcome of the proposed hybrid techniques is encouraging; hence this technique can be used in LTE, Fourth Generation (4G), Fifth Generation (5G) and beyond wireless communication systems.

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Title: Optimizing the Reduction of PAPR of OFDM System Using Hybrid Methods
Authors: Malleswari Akurati
Satish Kumar Pentamsetty
Satya Prasad Kodati
Publication date: 07-04-2022
Publisher: Springer US
Published in: Wireless Personal Communications / Issue 3/2022
Print ISSN: 0929-6212
Electronic ISSN: 1572-834X
DOI: https://doi.org/10.1007/s11277-022-09679-x

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