TCP and OSI protocols - Binaary Data to Analog Waveforms - Analog Modulation VS Frequency Modulation - QAM Constellation Diagram - IT Assignment Help

Assignment Task

Question 1. Convert the binary data “011010” into analog waveforms using the following modulation techniques:
a. Two-level Amplitude Shift Keying
b. Two-level Frequency Shift Keying
c. Two-level Phase Shift Keying
d. Differential Phase shift keying
e. Four level Amplitude Shift Keying
f. Four level Phase Shift Keying
g. Eight level Amplitude Shift Keying

Question 2. With fc = 500 kHz, fd = 25 kHz, and M = 16 (L = 4 bits), compute the frequency assignments for each of the sixteen possible 4-bit data combinations.

Question 3. Draw the approximate Analog Modulation and Frequency Modulation waveforms incomplete steps for the following signal:

Question 4. Draw the 16 QAM Constellation Diagram having two different amplitude levels and eight different phase levels.

Question 5. Explain and draw the Error Detection Process for Cyclic Redundancy Check (CRC).

Question 6. Compute the frame check sequence for the following information:
Message = 10111100, Pattern = 11011

Question 7. Compute the transmitted signal using Direct Sequence Spread Spectrum for the following information:
Input: 1011, Locally Generated PN bitstream: 101011011010, T = 3Tc

Question 8. What is the difference between Infrastructure and ad hoc modes in WLAN? Draw their relative diagrams as well.

Question 9. Compare the differences between TCP and OSI protocols for wired and wireless LANs using diagrams.

Question 10. Explain why the square and circle shapes cells for cellular communications are not appropriate as compared to hexagonal shaped cells.

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