EE521 Analog and Digital Communications James K. Beard, Ph. D. jkbeard@temple.edu Tuesday, March 15, 2005 http://astro.temple.edu/~jkbeard/ March 15, 2005 Week 9

Attendance March 15, 2005 Week 9

Essentials Text: Bernard Sklar, Digital Communications, Second Edition SystemView Office E&A 349 Tuesday afternoons 3:30 PM to 4:30 PM & before class MWF 10:30 AM to 11:30 AM Next quiz March 22 Final Exam Scheduled Tuesday, May 10, 6:00 PM to 8:00 PM Here in this classroom March 15, 2005 Week 9

Today’s Topics TBA SystemView and Term Projects Discussion (as time permits) March 15, 2005 Week 9

The Curve March 15, 2005 Week 9

EE521 Quiz 1 Backup Curve March 15, 2005 Week 9

Question 3 Computations March 15, 2005 Week 9

Bit Error Performances James K Beard, Ph.D. March 15, 2005 Week 9

Bit Error Rate Definitions Two types Receive estimate of 1 when an 0 was transmitted Receive estimate of 0 when a 1 was transmitted Two scenarios Coherent demodulation Incoherent demodulation Depends on modulation BPSK MPSK FSK March 15, 2005 Week 9

Bit Error Rates Sklar p. 219, From Haykin & Moher p. 159 March 15, 2005 Week 9

High SNR Bit Error Rates March 15, 2005 Week 9

AWGN Bit Error Rates March 15, 2005 Week 9

Rayleigh Fading Bit Error Rates March 15, 2005 Week 9

M-Ary Coding Bit Error Rates MFSK MPSK Coherent Detection March 15, 2005 Week 9

M-Ary Coding Bit Error Rates MFSK MPSK Non-coherent Detection March 15, 2005 Week 9

Assignment TBA March 15, 2005 Week 9