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Obfuscation of the orthogonal frequency-division multiplexing (OFDM) physical layer is described in this paper as a means to enhance the security of wireless communication. The standardization of the communication channel between two trusted parties results in a variety of security threats, including vulnerabilities in WPA/WPA2 protocols that allow for the extraction of the software layer encryption...
This paper describes and verifies a method of implementing bit error rate (BER) calculation for FPGA-based physical layer security techniques for Software Defined Radio (SDR). Specifically, we describe an independent source signal processing architecture for an efficient calculation of BER for wireless communication modules across the transmitter and receiver nodes. The source components at the transmitter...
This paper describes our design and proof-of-concept implementation of the Secondary User-Enhanced Spectrum Sharing (SUESS) radio that dynamically observes, understands, learns, plans, and adapts its spectrum sharing behaviors in an operating band that is shared with a noncooperative Primary User (PU) radio link. The SUESS radio leverages awareness of the PU's performance to drive the selection and...
This paper describes the design and simulated performance of a 5G-like spectrum sharing radio that uses both Non-Contiguous-Orthogonal Frequency Domain Modulated (NC-OFDM) waveform and an electrically Reconfigurable Alford Loop Antenna (RALA) to efficiently share spectrum with a co-channel IEEE 802.15.4, or ZigBee, radio link. We present a detailed performance analysis of Monte Carlo simulation trials...
As wireless devices hold prominent roles as means of communication, developing strong security methods against sophisticated cyber-attacks has become paramount. A novel physical layer based technique for securing wireless communication between the transmitter and receiver is described in this paper. The technique involves obfuscating the preamble data of the baseband signal through unique keys that...
In this paper a trained timing synchronization method using a matched filter and Carrier Frequency Offset synchronization method based on a modified correlation scheme is implemented in hardware for Orthogonal Frequency Division Multiplexing. MATLAB System Generator is used to target a Virtex-6 FPGA on the ML605 Xilinx evaluation board, with an optimized number of board resources utilized. A complex...
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