MSU Technologies

Secure and Efficient Orthogonal Frequency Division Multiplexing Transmission System with Disguised Jamming

VALUE PROPOSITION

The use of orthogonal frequency division multiplexing (OFDM) signal modulation has become widespread in current electronics. Currently 4G, 5G, LTE and other data and telecommunications systems utilize this modulation technique due to its numerous advantages.. With integration of OFDM into consumer, government, and corporate fields, resistance to signal jamming is an essential system safeguard. Jamming communication systems are a substantial threat to an increasingly technical society. While high power jamming is still a threat, the possibility of a different route of signal interference coined disguised jamming has also been elucidated. In disguised jamming, the symbol constellation and the codebook of the transmitter are discovered and replicated sequences in the codebook allow for the jamming signal to become indistinguishable from the original. Therefore, disguised jamming can destroy a signal while using a signal power that is similar to that of the original source. The reason that disguised jamming is difficult to prevent is due to the symmetricity between the authorized signal and jamming interference. This technology offers a response to disguised jamming.

DESCRIPTION OF TECHNOLOGY

This technology is a secure OFDM system for efficient and reliable transmission under disguised jamming. The system is created by introducing shared randomness between the transmitter and receiver. The system prevents discovery and duplication of the authorized signal. A special key is known between the transmitter and receiver for decryption. Introduction of the system does not reduce efficiency versus a traditional OFDM system. The changes to the existing OFDM physical layer transceivers is minimal, feasible, and inexpensive. The system can be applied to 4G and 5G communication systems, the next generation HDTV ATSC 3.0 system, and other communication systems based on OFDM techniques. The robustness of the proposed SP-OFDM scheme under disguised jamming has been demonstrated through both theoretic and numerical analyses.

BENEFITS