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Crest Factor Reduction Application Note - Intel
https://www.intel.cn/content/dam/altera-www/global/zh_CN/pdfs/literature/an/an396.pdf#:~:text=Crest%20factor%20reduction%20%28CFR%29%20reduces%20the%20output%20peak-to-average,efficient.%20Figure%202%20shows%20output%20clipping%20with%20CFR.
What Is Crest Factor and Why Is It Important? - iZotope
https://www.izotope.com/en/learn/what-is-crest-factor.html
Crest factor of a sine wave If we do the decibel math, we see that the crest factor of a steady sine wave is 20*log (1/0.707) = 3dB. So far though, we’re thinking like electrical engineers. Two things happen when we make the transition to audio engineering:
Crest factor reduction techniques (Chapter 11) - Digital ...
https://www.cambridge.org/core/books/digital-frontend-in-wireless-communications-and-broadcasting/crest-factor-reduction-techniques/89D766CBC59A1147B92668263BE02C0E
Vaananen, O.Vankka, J.Viero, T.Halonen, K.Reducing the crest factor of a CDMA downlink signal by adding unused channelization codesCommunications Letters, IEEE 6 2002 443 CrossRef Google Scholar Chow, J. S.Bingham, J. A. C.Flowers, M. S.IEEE International Conference on Communications 2 8 1997
Crest Factor Reduction Application Note - Intel
https://www.intel.cn/content/dam/altera-www/global/zh_CN/pdfs/literature/an/an396.pdf
Crest factor reduction (CFR) reduces the output peak-to-average ratio by clipping and allows additional gain on the output of CFR. You can operate closer to the amplifier compression point, therefore it is more efficient. Figure 2 shows output clipping with CFR. Figure 2. …
Crest Factor Reduction (CFR) Concept - Keysight
https://rfmw.em.keysight.com/wireless/helpfiles/n7614/Content/Main/Crest_Factor_Reduction_Concept.htm
Crest Factor Reduction (CFR) Concept. CFR is a technique used to reduce the PAPR (Peak To Average Power Ratio) of the transmitted signals so that the power amplifier can operate more efficiently. In practice, there are different CFR algorithms. In this section, the two algorithms used in N7614C Signal Studio for Power Amplifier Test 2022 are ...
Understanding The Nuances Of Crest Factor - …
https://www.prosoundweb.com/understanding-the-nuances-of-crest-factor/
The crest factor of an audio signal is the dB difference between the peaks and the RMS value of the signal. The RMS (Root Mean Square) is defined as the “heating value” of the signal – the voltage that would generate the same heat as a DC (Direct Current) signal, over the same time. The RMS value of a complex signal must be read with an RMS voltmeter.
Tech Tip Of The Day: The Crest Factor In ... - ProSoundWeb
https://www.prosoundweb.com/tech-tip-of-the-day-the-crest-factor-in-mastering/
Typically music has a crest factor of 10 to 20 dB (much more in some cases). That loosely means there is a 10 to 20 dB difference between the peak and the “average” electrical power of the music. Now, think about what a compressor does: it decreases the dynamic range of an audio signal, usually by lowering the peaks.
New Methods for HD Radio Crest Factor Reduction …
https://www.gatesair.com/documents/slides/2015-04-Anderson-Berndsen-Methods-HD-Radio-Crest-Factor-Redux.pdf
peak reduction algorithm the OFDM signal alone is modestly clipped and filtered once, yielding an HD-only PAR of around 8dB When combined with analog FM at - 10dBc (10%) injection ratio the .01% distribution crest factor is 3.98 dB with total peak power of 4.28 dB. Almost 2.75kW of linear amplification is needed to produce 1kW of FM+HD at -10.
Peak Cancellation Crest Factor Reduction (PC-CFR)
https://www.xilinx.com/products/intellectual-property/ef-di-pc-cfr.html
Xilinx provides a CFR solution for common wireless standards that is low cost, flexible, low power and solves your time to market needs. Crest Factor Reduction (CFR) is one of the most fundamental building blocks in wireless communication systems today. CFR is used to reduce the dynamic range of a transmitted signal so that amplifiers being used to transmit that signal can …
Crest Factor Reduction for Down-link LTE by Transmitting ...
http://pasymposium.ucsd.edu/papers2009/PAS2009_LTE_CFR.pdf
• Crest factor reduce (CFR) the LTE down-link waveform. – OFDM. – High PAPR (peak to average power ratio). • Modify Partial Transmit Sequence (PTS) approach to CFR – Exploit the structure of the LTE down-link waveform. – Improve computational efficiency.
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