Question

Equalizer is usually implemented in __________

(a) Transmitter

(b) Baseband or at IF in a receiver

(c) Radio channel

(d) Modulator stage

This question was posed to me by my college director while I was bunking the class.

This question is from Fundamentals of Equalization in chapter Equalization, Diversity and Channel Coding of Wireless/Mobile

Answer 1

The correct answer is (b) Baseband or at IF in a receiver

The explanation is: An equalizer is implemented at baseband or at IF in a receiver. Since the baseband complex envelope expression can be used to represent bandpass waveform, the channel response, the demodulated signal and adaptive equalizer algorithm are usually simulated and implemented at baseband.