DSP Based Carrier and Timing Recovery Techniques in Digital Modems

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Course Presenter
Prof fred harris
fred harris (sic) teaches at San Diego State University where occupies the CUBIC Signal Processing Chair. His teaching and research areas include, Digital Signal Processing, Multirate Signal processing, Communication Systems, Source Coding and Modem Design. He has extensive practical experience in communication systems, high performance modems, sonar and advanced radar systems and high performance laboratory instrumentation. He holds a number of patents on Multirate Signal Processing for Satellite and Cable Modems and lectures throughout the world on DSP applications. He consults for organizations requiring high performance, cost effective DSP solutions and has contributed to a number of textbooks and handbooks on various aspects of signal processing.

Mode of Delivery
TBA

Assumed Knowledge
Basic digital signal processing, basic knowledge in Communication Systems, Familiarity with Z-transforms, FIR filters, Sampling Theorem and Spectrum Analysis Techniques.

Course Summary
Next generation Digital and Software Defined Radio Receivers must perform the tasks of carrier and timing synchronization as well as the first generation tasks of spectral translation and filtering to select and reject specific spectral bands. First generation digital radios mimicked analog prototypes by controlling analog Voltage Controlled Oscillators to obtain the desired phase and frequency of clocks and carriers. Modern digital radios perform the synchronization tasks entirely in the sampled data domain. As we transition these tasks to the DSP domain, we are well advised to review the fundamental first principles of synchronization and pose the question "what is the best way to synthesize solutions based on first principles"? We do so to avoid advancing legacy compromises that reflect old technology limitations as well as to take advantage of innovative options offered by new DSP technology. This offering presents the essential concepts of full DSP synchronization for timing recovery and for carrier recovery. The presentation emphasizes understanding of the processes and illustrates these processes with sample designs and implementations. Real time MATLAB simulations illustrate essential concepts.