Accession Number : ADA615536


Title :   Communication and Jamming BDA of OFDMA Communication Systems Using the Software Defined Radio Platform WARP


Descriptive Note : Master's thesis


Corporate Author : AIR FORCE INSTITUTE OF TECHNOLOGY WRIGHT-PATTERSON AFB OH GRADUATE SCHOOL OF ENGINEERING AND MANAGEMENT


Personal Author(s) : Yaxley, Kate J


Full Text : http://www.dtic.mil/get-tr-doc/pdf?AD=ADA615536


Report Date : Mar 2015


Pagination or Media Count : 96


Abstract : The aim of this research is to demonstrate and evaluate the ability to eavesdrop and interfere with orthogonal frequency division multiple access-down link (OFDMA-DL) signal features utilising Wireless Open Access Research Platform (WARP) boards. The OFDMA-DL waveforms have been developed with 64 sub carriers and have guards and pilots as comparable to the 802.11a WiFi standard. An eavesdropper/interferer (ExJx) is used to estimate signal features, remotely gaining intelligence without alerting the communication system. This research also demonstrates how estimated signal features can be used to interfere with an established communication system. Methods used to perform the signal feature estimation exploit the cyclostationary nature of the OFDMA-DL waveform, with higher order cumulants utilised to classify modulation schemes. To assess the ability of the ExJx system to eavesdrop (Ex), Communication Battle Damage Assessment (CBDA) techniques are used. To assess the ability of the ExJx system to interfere (Jx), Jamming Battle Damage Assessment (JBDA) techniques are used.


Descriptors :   *COMMUNICATION AND RADIO SYSTEMS , *COMPUTER PROGRAMS , *JAMMING , BATTLES , DAMAGE ASSESSMENT , ESTIMATES , FREQUENCY , INTELLIGENCE , INTERFERENCE , MODULATION , ORTHOGONALITY , PILOTS , SIGNALS , SKILLS , THESES


Subject Categories : Countermeasures
      Radio Communications


Distribution Statement : APPROVED FOR PUBLIC RELEASE