Worcester Polytechnic Institute Electronic Theses and Dissertations Collection

Title page for ETD etd-042513-115904

Document Typethesis
Author NameCollins, Travis Fredrick
Email Address traviscollins at wpi.edu
TitleImplementation and Analysis of Spectral Subtraction and Signal Separation in Deterministic Wide-Band Anti-Jamming Scenarios
DepartmentElectrical & Computer Engineering
  • Professor Alexander Wyglinski, Advisor
  • Professor Andrew Klein, Committee Member
  • Dr. Christopher Anderson, Committee Member
  • Keywords
  • software defined radio
  • communications
  • jamming
  • Date of Presentation/Defense2013-04-19
    Availability unrestricted


    With the increasing volume of wireless traffic that military operations require, the likelihood of transmissions interfering with each other is steadily growing to the point that new techniques need to be employed. Furthermore, to combat remotely operated improvised explosive devices, many ground convoys transmit high-power broadband jamming signals, which block both hostile as well as friendly communications. These wide-band jamming fields pose a serious technical challenge to existing anti-jamming solutions that are currently employed by the Navy and Marine Corps. This thesis examines the feasibility of removing such deterministic jammers from the spectral environment, enabling friendly communications. Anti-jamming solutions in self-jamming environments are rarely considered in the literature, principally due to the non-traditional nature of such jamming techniques. As a result, a combination of approaches are examined which include: Antenna Subset Selection, Spectral Subtraction, and Source Separation. These are combined to reduce environmental interference for reliable transmissions. Specific operational conditions are considered and evaluated, primarily to define the limitations and utility of such a system. A final prototype was constructed using a collection of USRP software defined radios, providing solid conclusions of the overall system performance.

  • tfc_thesis.pdf

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