Adaptive Equalization Quiz

Which of the following is an example of a linear equalizer?

• LMS Equalizer

• RLS Equalizer

• Zero Forcing Equalizer

• Pseudo-Random Binary Sequence Generator

What is the main advantage of an adaptive equalizer?

• It uses a fixed filter for all channels

• It can adjust its coefficients in real-time to track channel changes

• It works only for wired channels

• It always uses zero forcing

What algorithm is commonly used in adaptive equalization?

• ASK

• PRBS

• LMS

• QAM

What is the purpose of scrambling in a communication system?

• To encrypt data

• To modulate the carrier frequency

• To maintain DC balance and help synchronization

• To amplify the signal

Which device XORs the input bit stream with a pseudo-random sequence?

• Equalizer

• Amplifier

• Regenerative Repeater

• Scrambler using LFSR

Which of the following is NOT a function of a regenerative repeater?

• Reception of signal

• Amplification

• Encryption of data

• Time recovery

Which technique is used for pulse shaping?

• LMS Algorithm

• Raised Cosine Filtering

• XOR operation

• Zero Forcing Equalizer

Which statement about QAM is TRUE?

• It modulates only the amplitude of the carrier

• It combines amplitude and phase modulation

• It does not require a carrier signal

• It is the same as FSK

Over-modulation in AM occurs when the modulation index is:

• Zero

• Equal to 1

• Less than 1

• Greater than 1

What is the purpose of envelope detection?

• Modulate the signal

• Shape the pulse

• Demodulate AM signals

• Scramble the data