Communication and Jamming BDA of OFDMA Communication Systems Using the Software Defined Radio Platform WARP
AIR FORCE INSTITUTE OF TECHNOLOGY WRIGHT-PATTERSON AFB OH GRADUATE SCHOOL OF ENGINEERING AND MANAGEMENT
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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 eavesdropperinterferer 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.
- Radio Communications