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modulation index

   Also found in: Wikipedia 0.03 sec.
modulation index [‚mäj·ə′lā·shən ‚in‚deks]
(communications)
The ratio of the frequency deviation to the frequency of the modulating wave in a frequency-modulation system when using a sinusoidal modulating wave. Also known as ratio deviation.


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The final test result is an averaged modulation index, which represents the normalized strength of the sideband signals in db.
A special index, called the modulation index (MI), was formulated to assess the adaptation of muscular activity pattern to the movement profile of the platform.
ClearBurst GB uses TDD and a dynamically adjustable modulation index, which combine to maximize efficiency and throughput.
 
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