12. How many subscriber stations can simultaneously communicate with a single Wi
ID: 3813106 • Letter: 1
Question
12. How many subscriber stations can simultaneously communicate with a single WiMAX base station?
13. What is the mandatory FEC coding rates for 802.16 using 64-QAM modulation?
14. What are the advantages of WiMAX's adaptive modulation?
15. What are the factors that impact the maximum achievable data rates in WiMAX?
16. What are the PHY-layer transmission modes in 802.16?
17. What are the differences between broadband and baseband?
18. What is the length of the MAC address of each station in WiMAX?
19. What are the differences between WirelessMAN-OFDM and WirelessMAN-OFDMA?
20. Which layer of WiMAX is responsible for QoS?
21. What does the term latency mean in a wireless network?
22. What is the most significant disadvantage of FSO?
23. What does occur after a device has been authenticated to a BS with a digital certificate?
24. List three encryption algorithms available for use with WiMAX.
25. Describe how WiMAX base and subscriber stations perform ranging to establish which modulation and FEC coding combination should be used in a connection.
Explanation / Answer
Hi
It is recommended to post fewer question in a single post .here i will be answering some of the given questions.
12. How many subscriber stations can simultaneously communicate with a single WiMAX base station?
Answer: 256 subscriber station can simultaneously communicate with a single WiMAX base station.
13. What is the mandatory FEC coding rates for 802.16 using 64-QAM modulation?
Answer: FEC Coding rate for 64-QAM modulation is 5/6
14. What are the advantages of WiMAX's adaptive modulation?
Answer : Different order modulations allow you to send more bits per symbol and thus achieve higher throughputs or better spectral efficiencies.
It allows for the scheme to change on a burst-by-burst basis per link, depending on channel conditions.AMC is an effective mechanism to maximize throughput in a time-varying channel
15. What are the factors that impact the maximum achievable data rates in WiMAX?
Answer: Factors that might impact performance of WiMax are : Path Loss, Free Space Loss,Shadow Margin, Physical Environment, Cable Loss, Interference.
16. What are the PHY-layer transmission modes in 802.16?
Answer: Various Phy-layer modes are. 256 OFDM, 128OFDMA,512 OFDMA, 1028 OFDMA.
20. Which layer of WiMAX is responsible for QoS?
Answer : The WiMAX MAC layer has a connection-oriented architecture that is designed to support a variety of applications, including voice and multimedia services.
WiMAX MAC is designed to support a large number of users, with multiple connections per terminal, each with its own QoS requirement.
24. List three encryption algorithms available for use with WiMAX.
WiMax uses encryption Mandatory- 3DES , Optional- AES. The system also offers a very flexible authentication architecture based on Extensible Authentication Protocol (EAP).
Thanks.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.