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{{merge from|Water-pouring algorithm|discuss=Talk:Water filling algorithm#Merge proposal: Water-pouring algorithm|date=June 2025}}
'''Water filling algorithm''' is a general name given to the ideas in [[communication systems]] design and practice for [[adaptive equalizer|equalization]] strategies on [[channel (communications)|communications channels]]. As the name suggests, just as water finds its level even when filled in one part of a vessel with multiple openings, as a consequence of [[Pascal's law]], the amplifier systems in communications network repeaters, or receivers amplify each channel up to the required power level compensating for the channel impairments. See, for example, channel power allocation in [[MIMO]] systems.
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