Synchronization in Communications Systems with Scale Time Offset Robust Modulation

Open Access
Author:
Windish, John Joseph
Graduate Program:
Electrical Engineering
Degree:
Master of Science
Document Type:
Master Thesis
Date of Defense:
February 29, 2012
Committee Members:
  • Randy Keith Young, Thesis Advisor
  • Sven G Bilen, Thesis Advisor
Keywords:
  • timing
  • signal processing algorithm
  • maximum likelihood detection
  • correlation
  • synchronization
Abstract:
Synchronization in wireless communications is an important problem. Good synchronization is critical to reliable signal detection and estimation. In this thesis, the concept of synchronization is presented as well as several specific examples of wireless synchronization. An overview of the current state of the art in synchronization, including different techniques and implementations, is provided. Scale Time Offset Robust Modulation (STORM) is a waveform design technique involving the simultaneous transmission of a base waveform as well as a time-scaled and time- delayed copy of that waveform. For some applications this technique is attractive as a possible candidate to enhance synchronization performance, due to the different tradeoffs of its performance properties. This thesis presents background for the STORM technique. From there, a theoretical analysis of the performance of STORM as a possible timing synchronization mechanism is presented. Next, this thesis performs a number of simulations showing the performance of STORM synchronization and timing under a variety of different channel conditions. The simulation results are compared to the theoretical analysis. Finally, conclusions from these STORM synchronization and timing simulations and the analyses are presented. Based on these conclusions, potential future work to develop STORM as a timing synchronization scheme is presented.