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crest factor
(redirected from Peak-to-average ratio)

   Also found in: Acronyms, Wikipedia 0.01 sec.
crest factor [′krest ‚fak·tər]
(physics)
The ratio of the peak value to the effective value of any periodic quantity such as a sinusoidal alternating current. Also known as amplitude factor; peak factor.


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The PowerDPD solution offers the following features: reduces the peak-to-average ratio (PAR) for single-carrier and multi-carrier signals; improves adjacent channel leakage ratio (ACLR) without the need for separate chipset or DSP; enables 45% efficiency using Axis Power Amplifiers; reduces cost for multi-channel MIMO systems; supports single and multicarrier environments; can be used in burst mode systems such as TDD-LTE and TD-SCDMA, the company said.
In addition to testing for two-way level and noise, echo-return measurements and singing-return loss like their smaller cousins, the larger systems should also be expected to report peak-to-average ratio, which will determine the suitability of voice lines for data transmission.
TruPwr[TM] RMS Detector Offers Industry's Best Temperature and Frequency Performance ADI's new ADL5902 TruPwr[TM] rms detector (root-to-means square detector) is designed for high-performance RF applications including power amplifier (PA) linearization/control loops, transmitter power control, transmitter signal strength indication (TSSI) and RF instrumentation that require accurate control of output power and use complex signals with highly varying peak-to-average ratios.
 
 
 
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