EE521 Analog and Digital Communications

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EE521 Analog and Digital Communications

• James K. Beard, Ph. D.
• jkbeard_at_temple.edu
• Tuesday, March 15, 2005
• http//astro.temple.edu/jkbeard/

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Attendance
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Essentials

• Text Bernard Sklar, Digital Communications,
  Second Edition
• SystemView
• Office
• EA 349
• Tuesday afternoons 330 PM to 430 PM before
  class
• MWF 1030 AM to 1130 AM
• Next quiz March 22
• Final Exam Scheduled
• Tuesday, May 10, 600 PM to 800 PM
• Here in this classroom

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Todays Topics

• TBA
• SystemView and Term Projects
• TBA
• Discussion (as time permits)

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The Curve
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EE521 Quiz 1 Backup Curve
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Question 3 Computations
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Bit Error Performances

• James K Beard, Ph.D.

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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

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Bit Error Rates
Sklar p. 219, From Haykin Moher p. 159
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High SNR Bit Error Rates
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AWGN Bit Error Rates
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Rayleigh Fading Bit Error Rates
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M-Ary Coding Bit Error Rates

• MFSK
• MPSK

Coherent Detection
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M-Ary Coding Bit Error Rates

• MFSK
• MPSK

Non-coherent Detection
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Assignment

• TBA