Assignment No 2
1. Convert the binary data “011010” into analog waveforms using 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
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.
3. Draw the approximate Analog Modulation and Frequency Modulation waveforms in
complete steps for the following signal:
4. Draw the 16 QAM Constellation Diagram having two different amplitude levels and eight
different phase levels.
5. Explain and draw the Error Detection Process for Cyclic Redundancy Check (CRC).
6. Compute the frame check sequence for the following information:
Message = 10111100, Pattern = 11011
7. Compute the transmitted signal using Direct Sequence Spread Spectrum for the
following information:
Input: 1011, Locally Generated PN bit stream: 101011011010, T = 3Tc
8. What is the difference between Infrastructure and ad hoc modes in WLAN? Draw their
relative diagrams as well.
9. Compare the differences of TCP and OSI protocols for wired and wireless LANs using
diagrams.
10. Explain why the square and circle shapes cells for cellular communications are not
appropriate as compared to hexagonal shape cells.

Assignment 4
Recent Computer Science Questions

Q:

CSC230 Discrete Mathematics I – a Convert the following graph to an adjsceney b. Draw a graph from the following matrix 1 011

CSC230 Discrete Mathematics I – a Convert the following graph to an adjsceney b. Draw a graph from the following matrix 1 011 C1 101
A: See Answer
Q:

(3) (4 pts) List two differences between PLAs (Programmable logic arrays) and FPGAs (Field programmable gate arrays).

(3) (4 pts) List two differences between PLAs (Programmable logic arrays) and FPGAs (Field programmable gate arrays).
A: See Answer
Q: In the UnGraphList class, create a method public DiGraphMatrix convert() that returns a new graph directed type DiGraphMatrix equivalent to the graph (this). In such a way that the returned g
A: See Answer
Q: Let the following figure be the schematic view of a communication network between two end-systems A and B. Assume that the nodal processing delay is negligible. Also, assume that the link between A a
A: See Answer
Q:

CSC230 Discrete Mathematics I – a Convert the following graph to an adjsceney b. Draw a graph from the following matrix 1 011

CSC230 Discrete Mathematics I – a Convert the following graph to an adjsceney b. Draw a graph from the following matrix 1 011 C1 101
A: See Answer
Q:

Module B: A state-rand()%4; if (A.state1) global time 6; Module C: private int C state; parameters i, j-1;/ a call without de

Module B: A state-rand()%4; if (A.state1) global time 6; Module C: private int C state; parameters i, j-1;/ a call without defining parameter j is fine if (i%2) C state-7; else C state-100: return C s
A: See Answer
Q:

4. Chapter 15. Consider the following two words BAABCBC and CAABABC. Find the longest common subsequence by filling out t

4. Chapter 15. Consider the following two words “BAABCBC” and “CAABABC”. Find the longest common subsequence by filling out the following matrix. Fill each entry with arrow. Tell what the longest comm
A: See Answer
Q: I’m trying to write MPI Parallel Program in C to make a square matrix (A) that is nxn. It should read from the command line “-r n” to initialize A with random numbers and “-d n” to create a diagonal m
A: See Answer
Q:

il. (20 points) Consider the following bit of pseudocode. for (i = 1; i <= n; i++) j 1; while j

~~~For this or similar assignment papers~~~