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EGEE 4330 – Advanced Communications & Networks

EGEE 4330 – Advanced Communications & Networks. 8.24.11 Dr. Timothy R. Tuinstra. Why study Advanced Communications?. Communications Convergence. Ubiquitous Communications. If you master this material, you might find yourself working for…. Communication System. Info. Format (week 1).

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EGEE 4330 – Advanced Communications & Networks

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  1. EGEE 4330 – Advanced Communications & Networks 8.24.11 Dr. Timothy R. Tuinstra

  2. Why study Advanced Communications? Communications Convergence UbiquitousCommunications

  3. If you master this material, you might find yourself working for…

  4. Communication System Info Format (week 1) Source Encoding Encrypt (wks 13-15) Channel Encoding (wks 5-8) Multiplex (wks 9-10) Pulse Modulation (weeks 2 & 3) Bandpass Modulation (weeks 2 & 3) Frequency Spread (wk 11-12) CHANNEL Multiple Access (wks 9-10) Link Analysis: Week 4 Multiple Access (wks 9-10) Info Format (week 1) Source Decode Decrypt (wks 13-15) Channel Decode (wks5-8) Demultiplex (wks 9-10) \ Frequency Despread (wk11-12) Demodulate (weeks 2 & 3) Detection (weeks 2 & 3)

  5. Major Communications Subsystems • Formatting: • Key Question: • How will we take raw information (i.e. e-mails, text messages, sampled waveforms) and put it in a consistent format for transmission through a system?

  6. Major Communications Subsystems • Modulation • Demodulation • Detection • Key Question: • How will we convert raw bits to a waveform that will propagate over a bandpass channel?

  7. Major Communications Subsystems • Source Encoding/Decoding • Key Question: • How will protect my data from the inevitable influence of noise in the channel?

  8. Major Communications Subsystems • Multiplexing/Multiple Access • Key Questions: • 1) How will I allow the transmission of multiple data streams at once? • 2) How will I allow multiple systems to access a single channel at the same time?

  9. Major Communications Subsystems • Frequency Spreading • Key Questions: • How can I make efficient use of my available power? • How can I protect my signal from the effects of jamming (intentional or unintentional)?

  10. Major Communications Subsystems • Source Coding • Key Question: • How can I compress my information so that I can send as few bits as possible? • Note: Unfortunately we will not cover this subsystem in this course.

  11. Major Communications Subsystems • Encryption • Key Questions: • How can I ensure that an “enemy” won’t surreptitiously read my transmissions? • How can I ensure that the information I receive is really from a sender that I trust?

  12. Course Objectives • By the time this course is over, you should be able to… • …coherently discuss each of the major subsystems of a digital communication system and why they are used. • …be able to engage in design activities related to each of the major subsystems and understand pertinent issues.

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