Marking Scheme

• Only the items below were checked.
• One mark was assigned for each item unless otherwise indicated.

Labs

                              Lab 1 (5)

- plot of (~1k) samples
- histogram of amplitude
- superimposed Rayleigh pdf
- plot of path loss vs log of distance
- best-fit path loss exponent

                              Lab 2 (8)

- four GUI and spectrum analyzer screen captures (4)
	222.5 MHz
        223 MHz
        period=255
        no reconstruction (anti-alias) filtering
- one each for:
	- correct frequency for complex multiply
	- correct difference for real multiply
	- correct periods
	- correct effect and name

                              Lab 3 (7)

- two GRC flowgraphs (2)
- screen capture
- spreadsheet
- plot of BER vs EbNo
- correct calculation of coding gain (2)


                              Lab 4 (9)

- GRC flowgraph
- screen captures (5)
- explanations or calculations (4):
  - increase Nfft: reduce bandwidth; reduce s/c spacing
  - increase Nused: increase bandwidth; no change in s/c spacing
  - increase fs: increase bandwidth; increase s/c spacing
  - increase span: additional spectrum components visible


                              Lab 5 (5)

- GRC flowgraph
- spectrum analyzer screen capture
- table of measurements
- estimated IP3
- comparison to specifications

Quizzes

                              Quiz 1 ()

Q1(a):
- some sort of average of three values
- correct answer
Q1(b):
- uses Rayleigh CDF
- correct answer

                             Quiz 2 (10)

Two marks were awarded for each of the five questions. One mark for a
correct method and one mark for the correct answer.

                                Quiz 3 ()

Q1,2,3: one mark for method, one for correct solution
Q4: one mark for Hamming code constraints, one for solution

                                Quiz 4 ()

Q1: one mark each for: computing H, computing e, find error location,
correct codeword

Q2: one mark each for each part.


                                Quiz 5 (15)

Q1: correct equation, used correct values, correct answer (3)
Q2:
Q3:
Q4(a): method, answer (2)
Q4(b): method, answer (2)

Exam