2019
DOI: 10.1109/tvt.2019.2909643
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Frequency-Selective PAPR Reduction for OFDM

Abstract: We study the peak-to-average power ratio (PAPR) problem in orthogonal frequency-division multiplexing (OFDM) 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 reducti… Show more

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Cited by 27 publications
(24 citation statements)
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“…In the case of E-ICEF, the complexity is increased mainly due to the calculation of the subband specific INI components z (l−1) f,m,s and creating the aggregated signal in each iteration. In the case of FC-ICEF, the computational complexity per FC processing block per iteration corresponds to the complexity of the original ICEF algorithm [9]. In FC filtering, the number of FC processing blocks varies depending on the used overlap factor and bin spacing.…”
Section: B Proposed Enhanced Icef (E-icef)mentioning
confidence: 99%
See 1 more Smart Citation
“…In the case of E-ICEF, the complexity is increased mainly due to the calculation of the subband specific INI components z (l−1) f,m,s and creating the aggregated signal in each iteration. In the case of FC-ICEF, the computational complexity per FC processing block per iteration corresponds to the complexity of the original ICEF algorithm [9]. In FC filtering, the number of FC processing blocks varies depending on the used overlap factor and bin spacing.…”
Section: B Proposed Enhanced Icef (E-icef)mentioning
confidence: 99%
“…In this paper, we present a novel iterative-clipping-and-error-filtering (ICEF)-type algorithm applied on OFDM symbol basis for mixed-numerology waveforms. Traditional ICF [4] and ICEF [9] solutions suffer from the INI, leading to very poor PAPR reduction performance. The proposed enhanced ICEF (E-ICEF) relies on cancelling the INI in each BWP during the iterative PAPR reduction process.…”
Section: Introductionmentioning
confidence: 99%
“…where P DL is the transmit power of DL, while 10 dB is added to account for the PAPR, as an OFDM signal's power may rise upto 10 dB above the average power [28]. After the propagation-and analog-domain SIC, the SI input to ADC of BS receiver is P SI = P DL − C SI , where C SI is the total SI reduced in the propagation-and analogdomains.…”
Section: Requirement Of Self-interference Cancellationmentioning
confidence: 99%
“…where ξ = However, if the conditions stated in Proposition 1 are not satisfied, or more random PSs are used, orthogonalityachieving PSs may not be available. In this case, we can write (28) as y y y n = Q Q Q i g g g n,i + T T T i + z z z n (32) where by definition,…”
Section: Channel Estimation In Mdd/mu-mimo Systemsmentioning
confidence: 99%
“…By reducing the PAPR through the available characteristics, the benefits of OFDM has been preserved. In order to reduce the power amplifier and to improve the transmitter power efficiency, the low PAPR is used [6]. Selected mapping, partial transmit sequence, tone reservation (TR) [7], and iterative clipping and filtering (ICF) are the methods available for denoting the PAPR problem [8].…”
Section: Introductionmentioning
confidence: 99%