Mar 27, 2023  
2015-2016 Undergraduate Academic Catalog 
2015-2016 Undergraduate Academic Catalog [ARCHIVED CATALOG]

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ET 4630 - Electronic and Wireless Communications

2 lecture hours 2 lab hours 3 credits
Course Description
This EET technical elective course provides further background in communication systems. Presentations of the following topics will be supplemented with the presentation of contemporary topics in communication systems: analog and digital modulation methods, and signal representations in time and frequency domains (review); the effects of noise on bit-error probabilities for both baseband digital systems and systems with modulation; advanced digital modulation methods, and bandwidth/energy-efficiency comparisons with ASK, FSK, and PSK methods; multiplexing methods (TDMA, FDMA, and CDMA/spread-spectrum); overview of wireless cellular communication systems. (prereq: EE 3031  or ET 3060 , ET 4620 )
Course Learning Outcomes
Upon successful completion of this course, the student will be able to:
  • Describe the differences between ASK, FSK, and PSK digital modulation methods
  • Compute the bandwidth requirements for commonly used baseband signals and digitally modulated signals
  • Perform bandwidth/energy comparisons between ASK, FSK, PSK, and other digital modulation methods.
  • Compute power and energy signal-to-noise ratios for signals with random data in white noise
  • Design a receiver using correlation detection or matched filters, for binary or M-ary signaling
  • Compute power and energy signal-to-noise ratios for signals with random data in white noise
  • Determine bit error probabilities as a function of signal-to-noise energy ratio for digitally modulated signals
  • Represent digital modulation methods, using constellation diagrams

Prerequisites by Topic
  • Functional blocks for typical communication systems
  • Introduction to low-pass and band-pass signals in the frequency domain
  • AM signals with sinusoidal modulation-time waveforms and frequency spectra
  • AM modulators and envelope-detector demodulators
  • FM signals with sinusoidal modulation-time waveforms and frequency spectra
  • Digital information and typical baseband signals
  • Introduction to commonly used modulation methods for digital data (ASK, FSK, PSK)

Course Topics
  • Digital communication system model
  • Signal orthogonality
  • Baseband and bandpass signal representation (constellation, eye patterns)
  • Digital modulation methods, ASK, PSK, M-PSK, QAM, FSK, MSK
  • Signal-to-noise energy ratios
  • Symbol detection, correlation detection, matched filtering
  • Bit error rate

Laboratory Topics
  • Introduction, Spectrum Measurements
  • DSB-SC
  • AM
  • FM
  • Digital Modulation - ASK and FSK
  • Digital Modulation - BPSK and QPSK
  • Bit Error Rate Measurements
  • Channel Bandwidth for Digital Data with Various Line Codes
  • Direct-Sequence Spread Spectrum and CDMA

Edward Chandler

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