Crest factor minimization in the frequency domain

Solomou, M.; Evans, C.; Rees, D.

doi:10.1109/tim.2002.803510

Cited by 14 publications

(8 citation statements)

References 9 publications

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“…The frequency contributions due to the nonlinearities can be divided into two types -harmonic contribution generated from pairs of equal positive and negative frequency or another input frequency with pair of equal pair of frequency (Type I) and inter-harmonic contribution not accounted for by Type I contributions (Type II). Even order nonlinearities can be suppressed by considering only odd harmonics, as the nonlinear contributions of the even order effects will fall at even harmonics (Solomou et al, 2002). As a result they will be distinct from the linear contributions as well as higher odd order one.…”

Section: Distortion Due To Nonlinearitiesmentioning

confidence: 99%

“…Simulation produces some interesting results, which is presented in next section. In this paper we have used the same concept that (Solomou et al 2002) propose to minimize the CF. The main idea of this method is that to achieve CF minimization by selecting their relative harmonic phases to reduce the error introduced by a cubic nonlinearity.…”

Section: No Interfering Distortion Signal With Optimized Crest Factormentioning

confidence: 99%

“…Use of non-interfering frequencies to generate input excitation can resolve this issue Rees, 2000, Mueller et al 1996). Proper scaling of amplitude for each frequency component leads to crest factor optimization problem (Solomou et al 2002) (Guillaume et al 1991).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Multi-frequency Technique for Frequency Response Measurement and its Application to Servo System with Friction

Keikha

Mamun

Lee

et al. 2011

IFAC Proceedings Volumes

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In this paper, the effect of nonlinear distortion on system identification is studied. In particular, the effect of nonlinear friction on frequency response measurement is examined. Design of multifrequency excitation signal that minimizes nonlinear effect on frequency response measurement has been explored and the best linear approximation model has been defined. An identification method using differential No Interharmonic Distortion (NID) excitation with optimized crest factor is proposed. The method is used to identify the best linear model of a hard disk drive actuator.

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Section: Distortion Due To Nonlinearitiesmentioning

confidence: 99%

Section: No Interfering Distortion Signal With Optimized Crest Factormentioning

confidence: 99%

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Multi-frequency Technique for Frequency Response Measurement and its Application to Servo System with Friction

Keikha

Mamun

Lee

et al. 2011

IFAC Proceedings Volumes

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“…This question is particularly crucial in communications schemes based on Orthogonal Frequency Division Multiplexing (OFDM) and in data processing, where the amplification of strongly fluctuating signals results in severe intermodulation nonlinear distortion and spectral spreading [1]. Interestingly this simple problem is still open and no systematic optimal solution has been provided yet [2][3][4][5]. However it turns out that particular choices of the phases lead to relatively low peak factors: among them the Rudin-Shapiro phases enable small peak factors but in the specific case of 2 p frequency components [6,7].…”

mentioning

confidence: 99%

Quiet broadband light

et al. 2014

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International audienceThe interference of waves evenly separated in frequency generates a periodic signal, whose intensity fluctuations depend on the phases of the individual waves. A fundamental question in telecommunications and acoustics is the minimization of the peak-to-average-power ratio (PAR): for a given spectrum, how to arrange the phases of the individual frequency components to ensure minimal intensity fluctuations of the resulting signal? For a flat spectrum a near-optimal solution is brought by the so-called Newman phases, commonly used in acoustic and radio waves. Here we transpose this property into the optical domain and prove the possibility to suppress the intensity fluctuations resulting from intermodal beating of a broadband comb of optical frequencies, whose phases are set according to a generalization of the Newman phases. We demonstrate experimentally a broadband laser, whose intensity contrast (defined as the standard deviation-to-mean ratio) is reduced down to 0.54 as compared to 1 when the phases are set randomly

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“…Time representation of one period of an example multisine − Phases of the tones: they are chosen to minimize the crest factor of the final multisine signal [8][9], to avoid problems related with the amplitude, as described in the previous item.…”

mentioning

confidence: 99%

Use of multisine excitations for frequency-response measurement of nonlinear DC-DC switching converters

Fernández-Herrero

Fernández

Carreras

et al. 2012

2012 Twenty-Seventh Annual IEEE Applied Power Electronics Conference and Exposition (APEC)

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In this paper, the application of multisine signals to the frequency-response measurement of switching converters is addressed. It makes some considerations on the available parameters of the signal and its influence on the measurement. The experimental set-up, where a boost converter is considered due to its well known non-linear effects, is described. Additionally, several experimental results are provided to illustrate all the concepts involved.

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Crest factor minimization in the frequency domain

Cited by 14 publications

References 9 publications

Multi-frequency Technique for Frequency Response Measurement and its Application to Servo System with Friction

Multi-frequency Technique for Frequency Response Measurement and its Application to Servo System with Friction

Quiet broadband light

Use of multisine excitations for frequency-response measurement of nonlinear DC-DC switching converters

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