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Frequency-selective PAPR reduction for OFDM

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Details

Original languageEnglish
Pages (from-to)6167-6171
Number of pages5
JournalIEEE Transactions on Vehicular Technology
Volume68
Issue number6
DOIs
Publication statusPublished - 1 Jun 2019
Publication typeA1 Journal article-refereed

Abstract

In this correspondence paper, we study the peak-To-Average power ratio (PAPR) problem in orthogonal frequency-division multiplexing systems. In conventional clipping and filtering based PAPR reduction techniques, clipping noise is allowed to spread over the whole active passband, thus degrading the transmit signal quality similarly at all active subcarriers. However, since modern radio networks support frequency multiplexing of users and services with highly different quality-of-service expectations, clipping noise from PAPR reduction should be distributed unequally over the corresponding physical resource blocks (PRBs). To facilitate this, we present an efficient PAPR reduction technique, where clipping noise can be flexibly controlled and filtered inside the transmitter passband, allowing to control the transmitted signal quality per PRB. Numerical results are provided in 5G new radio mobile network context, demonstrating the flexibility and efficiency of the proposed method.

Keywords

  • 5G New Radio (NR), clipping, filtering, orthogonal frequency-division multiplexing (OFDM), peak-To-Average-power ratio (PAPR), waveform, wireless communications

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