Mumbai University > Electronics and Telecommunication Engineering > Sem 6 > Data Communication

Marks: 10 Marks

Year: Dec 2016

TAPPED DELAY-LINE EQUALIZATION

• In theory, if the channel response is precisely known, it is virtually possible to make the ISI very small by using suitable transmit and receive filters.

• In practice, the channel response is not exactly known. Therefore, the channel effects which creates ISI must be compensated.

• The process to mitigate ISI issue is called equalization.

• The filter used to perform this operation is called equalizer.

• Equation : To compensate for the residual distinction

• Equation : Step

  • A device well ousted for the design of a linear equalizer is the tapped delay - line filter

  • Total Number of wps is chosen to be {2N+1}

$$h(t)=\sum^N_{k=-N}w_k \delta (t-kT) $$