Unitary Braid Division Multiplexing (UBDM) by Rampart Communications is a patented secure wireless modulation technology that provides cryptographic security at the physical layer. UBDM protects every bit in a wireless transmission from the physical layer up, ensuring that the data and signaling are secure. It eliminates the threat of eavesdropping or exploitation without sacrificing throughput, spectral efficiency, bandwidth requirements, or power budget. UBDM is implemented as a block of logic in an SDR, FPGA, or ASIC, and it is compatible with existing phy-layer protocols such as DVB-S2, 802.11, 4G/5G, MU-MIMO, and SC-OFDMA. UBDM ensures that unintended recipients cannot derive any information about the content of the wireless transmission, making it secure even if attackers have full knowledge of the system. It is designed to be backward and forward compatible, complementing modern digital communications and protecting every bit of data without increasing power consumption. UBDM also includes features such as anti-jam, anti-geo, and case-by-case PAPR reduction, enabling ultra-resilient embedded networks with Zero Probability of Intercept.
