Worcester Polytechnic Institute Electronic Theses and Dissertations Collection

Title page for ETD etd-090507-114502


Document Typethesis
Author NameCoyne, Jack W
URNetd-090507-114502
TitleFPGA-Based Co-processor for Singular Value Array Reconciliation Tomography
DegreeMS
DepartmentElectrical & Computer Engineering
Advisors
  • R. James Duckworth, Advisor
  • David Cyganski, Committee Member
  • John Orr, Committee Member
  • Keywords
  • hardware accelerator
  • SVD
  • digital signal processing
  • FPGA
  • Date of Presentation/Defense2007-08-31
    Availability unrestricted

    Abstract

    This thesis describes a co-processor system that has been designed to accelerate computations associated with Singular Value Array Reconciliation Tomography (SART), a method for locating a wide-band RF source which may be positioned within an indoor environment, where RF propagation characteristics make source localization very challenging. The co-processor system is based on field programmable gate array (FPGA) technology, which offers a low-cost alternative to customized integrated circuits, while still providing the high performance, low power, and small size associated with a custom integrated solution. The system has been developed in VHDL, and implemented on a Virtex-4 SX55 FPGA development platform. The system is easy to use, and may be accessed through a C program or MATLAB script. Compared to a Pentium 4 CPU running at 3 GHz, use of the co-processor system provides a speed-up of about 6 times for the current signal matrix size of 128-by-16. Greater speed-ups may be obtained by using multiple devices in parallel. The system is capable of computing the SART metric to an accuracy of about -145 dB with respect to its true value. This level of accuracy, which is shown to be better than that obtained using single precision floating point arithmetic, allows even relatively weak signals to make a meaningful contribution to the final SART solution.

    Files
  • jwcoyne_01_mastersthesis.pdf
  • jwcoyne_02_thesiscover.pdf

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