unidirectional pulse-amplitude modulation

unidirectional pulse-amplitude modulation

[¦yü·nə·də′rek·shən·əl ¦pəls ¦am·plə‚tüd ‚mäj·ə′lā·shən]
(communications)
Modulation of pulse-amplitude type in which all pulses rise in the same direction. Also known as single-polarity pulse-amplitude modulation.
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