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Why do we need equalizers in OFDM system?

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cambyzhu

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In OFDM system, why do we need Equilizer?
 

Equilizer purpose

cyclic prefix should be longer than channel length for elimination channel effect. in some scenarios channel length may be long and it reduce efficient transmission of data due to long cyclic prefix. so a channel shortening time domain equalizer should be used for efficient transmission.

regards
 

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