Q1. In relation to access to wireless network (e.g, WiFi), answer the following questions:
a. What is media access control and why is it important?
b. Give one example each of the controlled access methods and contention based
media access methods?
c. When might one access method be preferred over another in a network, and why?
d. Under what conditions do contention‐based media access control techniques
outperform controlled‐access techniques (i.e., have lower response time)? Explain.
Q2. Four users (U1, U2, U3 and U4) are using CDMA access techniques to transmit data to
their respective receivers (U1->R1, U2->R2, U3->R3 and U4->R4). The followings are the
spreading codes and the data that each user wants to send.
Using a spreadsheet similar to the one shown in Week 7 tutorial,
(a) show the composite signal that each receiver will receive;
(b) show how each receiver can retrieve its own data using the corresponding spreading
Note: encode ‘1’ in data as ‘+1’ and ‘0’ in data as ‘-1’ for this work.
Q3. Write a short essay on 5G technology in Australia. Your essay should include the
• discuss the coverage of 5G technology by the leading telcos in Australia and plan
for future coverage,
• can 5G technology help Australian businesses and services to increase efficiency
• discuss Australian government’s initiative for innovation around 5G technology,
• do you think 5G is a competitor to NBN for Australian businesses’ and domestic
users’ connectivity needs? Justify your answer.
Your essay should be of minimum 300 words and include references for your discussion
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