Low-complexity peak-to-average power ratio reduction method for orthogonal frequencydivision multiplexing communications

Document Type

Article

Publication Date

11-26-2015

Abstract

The high peak-to-average power ratio (PAPR) of the transmitted signal is a major drawback of multicarrier transmission such as orthogonal frequency-division multiplexing OFDM. A plethora of PAPR reduction techniques has been reported in the literature. Some of the techniques modify the phase and/or amplitude of symbols in the original symbol alphabet (SA) such as selected mapping and partial transmit sequences techniques. However, such methods have shortcomings of a heavy computational burden caused by required multiple inverse fast-Fourier transform (IFFT) operations and bit error rate performance degradation due to side information (SI). In this study, a low-complexity PAPR reduction framework is proposed to jointly modify phase and amplitude values of the original symbols in the alphabet. This framework utilises only one IFFT/FFT operator pair for transmultiplexing of symbols without any SI. The merit of the proposed method to design a SA modifier matrix (SAM) for PAPR reduction is shown through performance comparisons for the application scenarios presented in this study.

Identifier

84948975109 (Scopus)

Publication Title

Iet Communications

External Full Text Location

https://doi.org/10.1049/iet-com.2015.0194

ISSN

17518628

First Page

2153

Last Page

2159

Issue

17

Volume

9

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