Design of Directional Modulation Radio

Abstract

In this thesis, Directional Modulation (DM) as a technique to enhance security in the physical layer (PHY) for wireless communication systems is discussed, and a multiple-input, multiple-output (MIMO) DM radio is designed using GNU Radio software. A DM processing block for a MIMO system with two transmit and two receive antennas based on the knowledge of the channel state information (CSI) is implemented and tested in GNU Radio. An attempt to demonstrate a physical DM communication system using GNU Radio and universal software radio peripheral (USRP) devices is described, the problems faced during the experimental setup are included, and the reasons it was not finally completed for real testing are explained. Bit Error Rate (BER) calculations are presented by simulating a MIMO DM QPSK communication system in the GNU Radio Companion (GRC) environment using the implemented DM block. The simulation results illustrate the capability of the MIMO DM system to achieve small BER at an intended receiver and large BER for potential eavesdroppers.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2020
Accession Number
AD1126490

Entities

People

  • Thomas Kolokas

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Channel State Information
  • Coding
  • Communication Systems
  • Computer Programming
  • Computer Programs
  • Computers
  • Cryptography
  • Digital Signal Processing
  • Electrical Engineering
  • Graphical User Interface
  • Modulation
  • Multiple Input Multiple Output
  • Network Science
  • Operating Systems
  • Orthogonal Frequency Division Multiplexing
  • Radio Communications
  • Radio Equipment
  • Signal Processing
  • Software Defined Radio
  • Wireless Communications

Readers

  • Astronomy/Astrophysics
  • Radio communications and signal processing.