Polyphase Filter and Demodulation Techniques for Optimizing Signal Collection Processing

Abstract

This document presents the development and implementation of a polyphase filter used for frequency demultiplexing as well as the evaluation of its performance compared to a baseline. A polyphase filter approach is an efficient method that performs frequency demultiplexing by means of decimation, filter reduction and the usage of the FFT algorithm. The development was made using Matlab and C++, The performance was measured in terms of execution speed as function of the filter parameters. The code has been embedded in a GUI that allows the user to go step by step in the design process, i.e., from filter design to audio extraction. The software also implements several demodulation techniques to complement the development.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Feb 01, 2003
Accession Number
ADA412239

Entities

People

  • Alfredo V. Irizarry

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Algorithms
  • Amplitude Modulation
  • Computer Programming
  • Computers
  • Control Systems
  • Demodulation
  • Digital Signal Processing
  • Filters
  • Filtration
  • Frequency
  • Graphical User Interface
  • Modulation
  • Operating Systems
  • Signal Processing
  • User Interface

Fields of Study

  • Engineering

Readers

  • Phased Array Antenna Design.
  • Software Engineering.