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Wireless Communication Systems Practice Test: Equalization, Diversity & Channel Coding
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Equalization, diversity, and channel coding are three techniques that can be used to improve the quality of a communication link's signal and overall quality of service. These techniques can be used independently or in combination.  Equalizers require periodic retraining in order to maintain effective ISI cancellation. Equalizers track the changing channel and adjust their filter characteristics over time. Here's some more information about each technique: Equalization: A filtering technique that reduces the effects of frequency selective fading. Equalization compensates for intersymbol... Show more
Wireless Communication Systems Practice Test: Equalization, Diversity & Channel Coding
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25 Questions

1. For a distorted channel, LTE performance is superior to DFE.
2. In a RAKE receiver, if the output from one correlator is corrupted by fading, all the other correlator’s output are also corrupted.
3. Coherence time is dependent on the choice of the algorithm and corresponding rate of convergence.
4. Which of the following is not an advantage of Fano’s algorithm in comparison to Viterbi’s algorithm?
5. Frequency diversity is implemented by transmitting information on more than one ___________
6. Which of the following does not hold true for MLSE?
7. Block codes can achieve a larger coding gain than convolution coding.
8. For (n,k) block codes, rate of the code is defined as __________
9. Space diversity s also known as ________
10. In comparison to stack algorithm, Fano’s algorithm is simpler.
11. LMS equalizer minimizes __________
12. Which of the following algorithm uses simple programming?
13. Which of the following is not an example of block code?
14. In CDMA spread spectrum systems, chip rate is less than the bandwidth of the channel.
15. Time for convergence of an equalizer is not a function of _______
16. Which of the following code is a class of non-binary BCH?
17. The adaptive algorithms in equalizer that do not require training sequence are called ________
18. Which of the following is not a property of block code?
19. Zero forcing algorithm performs well for wireless links.
20. RAKE receiver is used for _______ technique.
21. Convergence rate of LMS is fast.
22. ______ controls the adaptive algorithm in an equalizer.
23. ____________ is used to prevent deep fade for rapidly varying channel.
24. In selection diversity, the gain of each diversity branch provides different SNR.
25. Equalization is linear if an analog signal is fed back to change the subsequent outputs of the equalizer.