Rake Receiver

Wireless & Mobile Communications

This set of Wireless & Mobile Communications Multiple Choice Questions & Answers (MCQs) focuses on “Rake Receiver”.

1. In CDMA spread spectrum systems, chip rate is less than the bandwidth of the channel.
a) True
b) False

2. A RAKE receiver collects the __________ versions of the original signal.
a) Time shifted
b) Amplitude shifted
c) Frequency shifted
d) Phase shifted

3. RAKE receiver uses separate _________ to provide the time shifted version of the signal.
a) IF receiver
b) Equalizer
c) Correlation receiver
d) Channel

4. Each correlation receiver in RAKE receiver is adjusted in ____________
a) Frequency shift
b) Amplitude change
c) Phase shift
d) Time delay

5. The range of time delays that a particular correlator can search is called ________
a) Search window
b) Sliding window
c) Time span
d) Dwell time

6. RAKE receiver is used for _______ technique.

7. A RAKE receiver uses __________ to separately detect the M strongest signals.
a) Single correlator
b) Multiple correlator
c) Single IF receiver
d) Multiple IF receivers

8. In a RAKE receiver, if the output from one correlator is corrupted by fading, all the other correlator’s output are also corrupted.
a) True
b) False

9. A RAKE receiver uses __________
a) Equalization
b) Channel coding
c) Diversity
d) Encryption

10. Interleaving is used to obtain ___________ diversity.
a) Time
b) Frequency
c) Polarization
d) Antenna

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