DSP-Based Carrier and Timing Recovery Techniques in Digital Modems

EC ENGR 830.80

Learn the essential concepts of full DSP synchronization for timing recovery, phase recovery, and carrier recovery. Understand the processes through sample designs and implementations. This course will be held virtually via Adobe Connect. 

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What you can learn.

  • Understand DSP synchronization through sample designs and implementations

About this course:

Learn the essential concepts of full DSP synchronization for timing recovery, phase recovery, and carrier recovery. Understand the processes through sample designs and implementations. Real-time MATLAB simulations illustrate essential concepts for a number of common modulation schemes, such as QPSK and QAM, as well as CPM, Offset QPSK, VSB, OFDM, and CDMA.

It is highly recommended that participants have attended the two related UCLA Extension short courses in this area, Communication Systems Using Digital Signal Processing and Advanced Digital Communications: The Search for Efficient Signaling Methods, or have a working familiarity with Z-transforms, FIR filters, Sampling Theorem, and spectrum analysis techniques.

Lecture notes are distributed on the first day of the course. These notes are for participants only and are not otherwise available for sale or unauthorized distribution.

fredric j. harris, PhD, Cubic Signal Processing Chair Professor of Electrical and Computer Engineering, San Diego State University, California. Dr. harris is a recognized expert in the field of Digital Signal Processing (DSP), especially as applied to underwater acoustics, radio surveillance, satellite communications, radar, real-time acoustics, vibration monitoring equipment, and laboratory instrumentation. He is the author of the text, Multirate Signal Processing for Communication Systems. Since 1970, he has been a consultant to such organizations as the U.S. Navy Ocean Systems Center, Lockheed, ESL, Cubic, Hughes, BAE, Scientific Atlanta, Rockwell, Northrop Grumman, Boeing, and Inritsu. He also has presented courses on fast algorithms, adaptive algorithms, error-correcting codes, and control theory. Dr. harris has conducted seminars in DSP for Motorola, Northrop Grumman, BAE, Lockheed, Hewlett Packard, General Electric, Rockwell, Spectral Dynamics, and the U.S. Navy Research Laboratory.

Receiver Structures

  • Parameters to be estimated
  • Eye diagrams, constellations, and other observables
  • Visualization aides

Maximum Likelihood Estimation (MLE) of Phase

  • Phase-locked loops and digital equivalents
  • Matched filters
  • Decision and non-decision directed
  • Squaring loops

Maximum Likelihood Estimation of Timing

  • MLE Model and approximations
  • Phase detectors
  • Early-late gate
  • Decision and non-decision directed

Maximum Likelihood Frequency Estimation

  • Frequency matched filter
  • Band edge filtering

Polyphase Filters for Timing Recovery and Band Edge Filtering

Pilots and Preambles

  • Fast acquisition training signals
  • Signal mining options

Practical Consideration

  • Acquisition and tracking aides
  • Phase detectors
  • Frequency detectors
  • Direct digital synthesizers
  • CORDIC algorithms
  • SNR-Estimators

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