modulation factor

modulation factor

[‚mäj·ə′lā·shən ‚fak·tər]
(communications)
In general, the ratio of the peak variation in the modulation actually used in a transmitter to the maximum variation for which the transmitter was designed.
In an amplitude-modulated wave, the ratio (usually expressed in percent) of the peak variation of the envelope from its reference value, to the reference value. Also known as index of modulation.
In a frequency-modulated wave, the ratio of the actual frequency swing to the frequency swing required for 100% modulation.
References in periodicals archive ?
Where [F.sub.LA] is the modulation factor from the luminance adaptation, [F.sub.M] is another modulation factor from the contrast masking, [T.sub.B] refers the base threshold.
The modulation factor behaves like the amplification factor.
The modulation factor (MF) was used to evaluate the modulating effects of compounds on MICs of antibiotics according to the following formula: MF = MIC antibiotic/MIC antibiotic + modulator.
Table 1 Minimum inhibitory concentration (MIC), modulation factor (MF), and fractional inhibitory concentration (FIC) values of antibiotics and ethidium bromide alone and in combination with compounds 1-13, for S.
The symbols [[sigma].sub.init], [[sigma].sub.fin] represent, respectively, initial and final values of the standard deviation, whereas m is a nonlinear modulation factor. Taking into account that the distance between plants can be interpreted as the number of transformations of the parent individual, value computed by the normal distribution generator is rounded to the nearest integer value.
number of seeds for a weed 0 0 [S.sub.min] Initial value of standard deviation 25 75 [[sigma].sub.init] Final value of standard deviation 0.001 0.005 [[sigma].sub.fin] Nonlinear modulation factor m 5 4.5 Number k of neighbours and neighbourhoods 1 1 examined during the rolling down Probability of the dispersing [P.sub.disp] 0.7 0.3 Probability of the spreading [P.sub.spr] 0.2 0.2 Probability of the rolling 0.1 0.5 down [P.sub.roll] Selection method Global Global Description Rastrigin Rosenbrock Population cardinality {20, 40, 80,160} Number of iterations (stop criterion) {1000,1500, 2000} Initialization of the first population Random Max.
From the Fourier transform of (6), the modulation factor loss K in a harmonic radar case can be obtained as
The section S2 is switched off from the myocardial contractility circuit, thereby decreasing the modulation factor from 1 to 0.17.
Any offset between [T.sub.sky] and [T.sub.ref] "can be balanced before differencing either by a variable back-end gain stage with a feedback scheme to maintain the output power as close as possible to zero, or by multiplying in software one of the two signals by a so-called gain modulation factor" [47].
The NFU's outright rejection of the modulation factor - which is seen as robbing Peter to pay Paul - is understandable.
is the modulation factor. The elementary frequency variation g(t) results from a convolution between the rectangle function rect(t) that define the digital pattern and the unit pulse response of the Gaussian filter h(t)
Over the years Denzil signed up to Tir Mynydd, the old hill land compensatory scheme with flock and suckler cow payments; then Tir Gofal, which worked around a points system for conservation issues and now Tir Cynnal, which is concerned with the environment and is intended to work around modulation factors.

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