Answer all question bellow, from assignment 1 to 7

Assignment 1

1. Explain how a radio antenna works when transmitting a signal.
2. Explain the difference between bps and baud rate
3. Explain the difference between amplitude modulation, frequency modulation and phase modulation
4. What is quadrature amplitude modulation (QAM) and how does it work?
5. List and describe the three different types of binary signalling techniques.
6. What is the longest and shortest wave length?
7. Write a one-page report on the first 4 pages of the paper infrared wireless communication. https://paginas.fe.up.pt/~ee05005/tese/arquivos/wireless_ir_com.pdf

Assignment 2

1. List and describe the three types of data flow.
2. List and discuss the advantages of standard.
3. What is switching? What type of switching is used with telephone transmissions, and what type is used for data transmission?
4. Explain multipath distortion and how it can be minimized.
5. What are the functions of NCA in Ghana?

Assignment 3

1. List two types of directional antennas
2. How do smart antennas function?
3. How do sky waves propagate?
4. What happens if someone sets up a pair of antennas that interfere with your point-to-point link between two buildings that uses an unlicensed frequency?

Assignment 4

1. What is the problem with Bluetooth and IEEE 802.11b WLANs using the same frequency? What is can be done about it?
2. What is the difference between a piconet and scatternet?
3. What is the difference between the paging procedure and the inquiry process?
4. List and describe the three types of error correction used with Bluetooth.

Assignment 5

1. List five (5) application characteristics of High Rate WPAN Standards
2. What is the Piconet coordinator (PNC)? What is its role?
3. State the two types of dependent piconets and briefly explain them.
4. Explain the Wireless Application Protocol version 2.0 (WAP2) protocol.
5. Explain communication in an 802.15.3 piconet.
6. Explain five WPAN Challenges

Assignment 6

Your grandparents leave in a remote country house and the nearest village, Benua, is a 30 min drive. They love their country house and have no intention of moving to a larger city. Their major concern however is the poor cellular network coverage they have, which is practically non existent or at best patchy. Your mother is concerned about her inability to reach them at most times.

Write a report on how you will go about building and installing their own antenna for them to improve upon cellular communication.

• You may assume that the nearest tower is in Benua. You may also assume that the service provider uses a frequency of 800mHz in rural areas in Ghana. Your report must include a justification of why the service provider would this frequency range.
• State any other assumptions you will make and the justification for those assumptions.
• Your report must make clear all the equipment that will be required and the associated cost.
• The report must also make clear how the antenna will be installed.

Assignment 7

Using the lecture slides provided and any other sources, prepare a 2-page report on UWB technology and the challenges of and future directions of WPAN