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Student Name: ________________ Student Number: ____________ Page 1 of 8 SYSC3501 Communication Theory – Midterm #2 Saturday March 13, 2004
Student Name: ________________ Student Number: ____________ Page 2 of 8 SYSC3501 Communication Theory – Midterm #2 Saturday March 13, 2004
Student Name: ________________ Student Number: ____________ Page 3 of 8 Question 3 Supposed we are designing a wireless digital telephone system. The available transmission bandwidth for this system is 1 MHz. Signals are transmitted using M-ary Phase Shift Keying (MPSK) with raised cosine pulses. An M = 8-level digital modulation signal is selected and the roll-off factor is 50%. Part a. Using the design information provided, what is the data rate of this system? Part b . What is the spectral efficiency of this system?
SYSC3501 Communication Theory – Midterm #2 Saturday March 13, 2004 Part d. For telephone voice quality we can assume an absolute bandwidth of 4 kHz. This
Part c. Assuming that a carrier amplitude of A c = 2, draw the signal constellation diagram.

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