MSU Technologies

COMMUNICATION SYSTEM FOR WIRELESS NETWORKS

VAlue proposition

A major drawback of Orthogonal Frequency Division Multiplexing (OFDM) is its high peak-to-average power ratio (PAPR), which causes nonlinear distortion, lower power efficiency and performance losses. An additional concern is fragility under hostile jamming attacks. By implementing a modified OFDM method the system effectively transforms the time domain signal into a frequency domain signal, adjusts the gain, and converts it back to the time domain while preserving the original bitstream. This approach addresses the PAPR issue by reducing the power amplification required for transmission, thereby minimizing nonlinear distortion, power inefficiency, and out-of-band frequency dispersion. Additionally, the system enhances resilience against jamming attacks by employing advanced signal processing techniques, ensuring reliable high-speed transmission. This technology is particularly beneficial for resource-constrained IoT networks, where power efficiency and robustness are critical factors for successful implementation.

Description of Technology

The technology described is an innovative communication system utilizing an Inverse Fast Fourier Transform (IFFT) -Relocated OFDM (IR-OFDM) approach, which effectively addresses the high peak-to-average power ratio (PAPR) and fragility issues commonly associated with traditional OFDM systems. By relocating the IFFT module from the transmitter to the receiver, the IR-OFDM system eliminates the PAPR barrier while maintaining the same spectral efficiency. Furthermore, the system incorporates a securely mechanism to enhance resilience against hostile jamming attacks, particularly disguised jamming where the interference is correlated with the authorized signal. This is achieved by integrating Advanced Encryption Standard (AES) into the IR-OFDM transceiver design, which introduces random or dynamic constellation, ensuring reliable performance under such adversarial conditions. The IR-OFDM and SP-IR-OFDM systems have potential for use in next-generation secure and energy-efficient high-speed communications, particularly in resource-constrained IoT networks.

Benefits