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Wireless Communication Systems Practice Test: 4G
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4G is the fourth generation of mobile phone technology, following 2G and 3G. It's the broadband cellular network technology that came after 3G and before 5G. 4G was first released to the public in 2009. 

4G makes it easier to access the internet on mobile devices, including tablets and laptops. It offers faster data rates, lower latency, and more efficient use of the radio frequency spectrum. 
4G LTE is a type of 4G that provides the fastest mobile internet experience. 
 

Topics include: Long Term Evolution (LTE), 4G Network Architecture, OFDMA, & MIMO.

Wireless Communication Systems Practice Test: 4G
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25 Questions

1. Which channel indicates the number of symbols used by the PDCCH?
2. Common data rates of IEEE 802.11 OFDM are ____________
3. _______ is a technique of transmit diversity used in UMTSS third-generation cellular systems.
4. Why is a cyclic prefix required in an OFDMA?
5. In MIMO, which factor has the greatest influence on data rates?
6. MIMO means both transmitter and receiver have multiple antennas.
7. MIMO stands for _______
8. What does the DC subcarrier indicate?
9. Which type of cell provides the best level of service for average subscribers?
10. MIMO is a smart antenna technology.
11. What is the largest channel bandwidth a UE is required to support in LTE?
12. What processing step combines multiple OFDM subcarriers into a single signal for transmission?
13. Which of the following technology does not use MIMO?
14. OFDMA stands for ________
15. In LTE, what is the benefit of PAPR reduction in the uplink?
16. What is the length of the shortest possible PDCCH in bits?
17. What is the average uploading speed of 4G LTE network?
18. How often can resources be allocated to the UE?
19. What does SGSN stands for?
20. OFDM uses complex equalizers.
21. What location management feature is supported by 4G?
22. What type of handovers is supported by LTE?
23. _______ is a transmission method used in MIMO wireless communications to transmit encoded data signals independently.
24. With the normal cyclic prefix, how many symbols are contained in 1 frame?
25. Which property of OFDMA system allows adjacent subcarriers to be used without interference?

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