Problem 1:

2 pts for any attempt. 1pt for each part.

Problem 2:

0 for fully wrong. 1 for attempt.  2 for correct answer.

Problem 3:

(a) 1 for correct use of path loss.  1 for correct use of processing
gain.  1 for correct SNR to E_b/N_0 conversion.  1 for putting
everything together.

(b) 2 for correct calculation, following part (a).  2 for correct
plot.

Problem 4:

3 for each sequence.  Deduct a pt or two for wrong calculation.  Do
not worry about answer to "which one appears more random" question.

Problem 5:

2 for each part.  In each case, give 1 pt for a wrong attempt, 0 for
no attempt, and 2 for correct attempt.

Problem 6:

3 + 3 + 4

In each part, deduct 1 for a small mistake, and 2 for multiple
mistakes.

Problem 7:

A hand-wavy correct argument without using the polynomial abstraction
should fetch 4 points.  An argument that uses the polynomial notation,
but does not make the crucial argument made in the last para should
also fetch 4 points.  

If the argument is incomplete, but the student understands the nature
of errors discussed and notions of burst, give them at least 3 points.