Accession Number:

ADA439409

Title:

Data Set Simulation and RF Path Modeling of a QPSK Radio Communication System

Descriptive Note:

Master's thesis

Corporate Author:

NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s):

Report Date:

2005-09-01

Pagination or Media Count:

78.0

Abstract:

This project simulates QPSK modulation signals and uses a laboratory environment to create deteriorating effects of real-world high frequency HF transmissions that may modify the ideal QPSK waveform. These modifications may be identifiable in order to fingerprint the source of the modifications. To simulate the transmission path in the real world a signal generator is used to create the QPSK IQ signal at the HF operating frequencies and a digital sampling oscilloscope acts as a receiver and records the data for analysis. A computer with MATLAB Instrument-control Toolbox is used to generate a random-input data stream as an input to the signal generator, which modulates the RF signal. The RF signal was chosen to be at HF 5-15 MHz and the QPSK modulation was at 9600 baud. The deterioration effects of a real-world transmitter site were chosen to be associated with the output amplifier linearity and

Subject Categories:

  • Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE