Coherent optics uses quadrature amplitude modulation (QAM), a method of complex modulation that increases transmission speed and efficiency by extending multi-level modulation to two or more ...

Abstract This document describes some of the uses of hierarchical modulation in DVB-T. There is also a brief explanation of hierarchical modulation.

There are several modern digital modulation techniques that provide increased information capacity, higher data security and quicker system availability with great communication qualities.

Quadrature modulation is widely used in digital communications systems up to and including 5G. The basic idea behind modulation is to control one or more parameters of an RF carrier by the modulating ...

Here’s how it works. Mention ‘modulation’ to a computer musician and their hand will most likely reach for the nearest soft synth or keyboard mod wheel. On the theoretical side of music, though, the ...

Kolkata: The city will soon have a specialised ‘neuro-modulation' unit that will treat brain ailments using external and ...