Homework Assignments

All assignments refer to Kurose and Ross, 3rd Edition, problems (not review questions) unless stated othewise.

Your homework papers shall have

the class prefix and number,
the date,
the assignment number,
the problem numbers,
the printed names of each participating member of your team, with
the members who were the recorder and the checker so indicated, and
signatures of each participating member beside their printed name

on them. They shall also be neat, legible, and clearly state any reasonable assumptions you had to make. Place a box around the actual answer to each question (part) to distinguish it from the work leading to the answer. You must make suitable arrangements to obtain the signatures of each team member in time to submit the homework for grading on time.

In your answers, if the question asks for the signal-to-noise ratio, you should express it in decibels. All answers should show your work (in particular, yes/no questions should provide more than yes or no as an answer). Three copies of the questions will be posted on my door for you to copy if necessary. Please do not remove them for more than 15 minutes (honor system).

HW1: 1.{1,2,5,6,7,8,11,13,14,17} plus two problems below - DUE 9/15
- SQ1 - a) What is the SNR (in dB) needed to communicate error-free at 56.6 Kbps over a 4000 Hz bandwidth phone line?
  b) How big must the signal constellation be for that rate?
- SQ2 - Assume Poisson arrivals for this question.
  a) Graph the mean number of packets in the queue for a link that transmits at 10 Mbps, packets of size 1500 bytes, for arrival rates of 100, 200, 300, 400, 500, 600, 700, 800 packets per second average arrival rate. b) graph the delays for the same parameters. c) repeat a and b for a 1 Gbps link, but use traffic intensities of 0.5, 0.6, 0.7, 0,8, 0.9, 0.95, 0.975. What arrival rates correspond to these traffic intensities?
HW2: 2.{1,3,6,7,9,13,14,16,19}
DUE 9/30
HW3: 3.{1,3,6,7,10,11,12,15,19,21,22,27,29,31,33,36,38}
DUE 11/10
HW4: 4.{1,3,7,10,16,18,20,21,23,24,31}
REVIEWED 12/6

Homework Policy

Students will work in teams of 2-4 on their homework assignments and laboratories. This is mandatory, and homeworks will NOT be accepted from individuals. All members of each team are responsible for doing the homework themselves and for knowing the techniques used and final answers submitted by the group for each homework assignment. For each assignment, there should be two students from each team designated to special roles of recorder and checker. The recorder's job is to format the homework submission neatly and include the class name and number, assignment number, problem numbers, team names, and date on a cover page for that submission, and to format the answers neatly in numerical order with at least one inch of white space between answers. The checker's job is to check each answer and to proofread the final submission. Team members will rotate through these positions over the term such that every member performs each role i times before any member performs the same role i+1 times. Each team member must sign each homework submission as an affirmation that they participated in its preparation, and indicate if they were the checker or the recorder for that submission. Homeworks will be collected at the start of the class in which they are due. Each student should be prepared to present the answer at the start of the class on which the homework is due. It is recommended that each team retain a copy of their homework submission to use if they are called. The student presenting an answer should explain the answer and not just copy the mechanical steps from the homework paper. Homeworks and this form of class participation will count for 10% of the grade.

Send comments to nemo@cis.ufl.edu