Examples of 'predistortion' in a sentence
Meaning of "predistortion"
Predistortion is an adjective used to describe a process or technique that modifies a signal or data before it is transmitted or processed in order to compensate for expected distortion or non-linear effects
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- distortion prior to some other process
How to use "predistortion" in a sentence
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predistortion
Predistortion arrangement for a digital transmission system.
Various patents on digital predistortion have been filed.
Various predistortion techniques are already known in themselves.
This technique is called predistortion with memory.
Predistortion values are stored in precalculated look up tables.
It is then used to construct the predistortion table.
The phase predistortion can now be calculated.
Digital transmission system with predistortion.
The amplitude predistortion can now be calculated.
The linearization principle generally used in satellite payloads is predistortion.
Predistortion linearizer for microwave power amplifiers.
The third method is the predistortion or postdistortion technique.
Predistortion systems using this principle operate in baseband.
The second order predistortion is usually adjusted first.
Predistortion of the signal before it is amplified is used to combat it.
See also
The values contained in the predistortion table are calculated adaptively.
Predistortion is used to try to ensure that a transmitter is linear.
The averaging also allows the predistortion algorithm to converge faster.
The predistortion to be applied can be calculated by the spline method.
Systems and methods for digital predistortion in a dual band transmitter.
The predistortion parameters can not at present be corrected in flight.
The determination of the polynomials is advantageously used to update a predistortion table.
Various types of predistortion linearizer have already been designed.
There are various techniques for producing adaptive digital baseband predistortion.
Predistortion linearization device with adjustable amplitude and shape.
This is particularly significant when the predistortion circuit utilizes a memory.
Description of predistortion algorithm for use with an external power amplifier.
The downconversion chain therefore allows regular updating of the predistortion coefficients.
Determining predistortion setting parameters.
The invention is related to the implementation of the cuber in such predistortion linearizer.
A predistortion linearizer is a device that is placed upstream of the input of a power amplifier.
Modifying the setting parameters of the predistortion linearizer leads to different errors.
Broadband predistortion linearizer with automatic temperature compensation for microwave amplifiers.
Modifying the setting parameters of the predistortion linearizer yields a different quadratic error.
Predistortion is thus performed individually for each frequency prior to signal combining.
The present invention relates to improvements in predistortion linearizers for microwave power amplifiers.
The predistortion applied is the inverse of the distortion caused by the amplifier.
Second known technique of adaptive digital baseband predistortion consists in using mathematical models.
The predistortion means carry out a predistortion of the phase or frequency modulation signal.
The invention will be further described for a system comprising a fixed predistortion circuit.
The predistortion table can therefore have its inputs graduated in modulus or in power.
Balance and quadrature defects therefore degrade the performance of linearization using predistortion.
The same predistortion coefficient is then applied over the duration of an entire frame.
The generator generates test signals for the purpose of determining the predistortion setting parameters.
Another more recent predistortion technique consists of modifying the alphabet of data to be transmitted.
The method comprises predistorting the input signal according to a predistortion characteristic to obtain a processed signal.
Phase predistortion is determined by comparing the reference phase with the measured phase.
The dashed curve indicates the amount of predistortion which is subtracted from the inherent distortion.
Amplitude predistortion is determined by comparing the reference amplitude with the measured amplitude.
More particularly it relates to a system and method for determining predistortion coefficients for microwave transmitters.
